GMPLS UNI for Packet and Optical Integration

With the cloud becoming increasingly central to business operations, packet and optical network services must evolve to become more efficient and dynamic. Closer integration of packet and optical networks becomes critical especially in the control plane.

Understanding GMPLS UNI

Generalized Multiprotocol Label Switching (GMPLS) User Network Interface (UNI) or GMPLS UNI is a key technology that enables this integration. GMPLS UNI enables packet networks to directly tap into the optical transport control plane to coordinate its resource requirements with the optical transport network. Leveraging open standards, GMPLS UNI optimizes network resources and improves network utilization across packet and optical networks.

Channel Spacing

DWDM grid in the optical spectrum can be divided into multiple channels so that each channel can carry traffic independently. The number of channels that we receive from the DWDM grid depends on the channel spacing. For example, the lower the channel spacing, the higher the number of channels, and also conversely.

GMPLS has two types of channel spacing:

  • Fixed Grid channel spacing - The channel spacing is fixed to 50 GHz and supports 100 and 200-Gbps traffic.

  • Flexible Grid channel spacing - The channel spacing is 6.25 GHz and supports all data rates.

    The neighbor flexi-grid-capable command enables GMPLS UNI flexible grid channel spacing. This command is executed during the LMP configuration configuration.

Use Case Overview

GMPLS UNI technology addresses the following customer needs in packet and optical networks:

  • Effective usage of the DWDM grid with minimal wastage of spectral bandwidth

  • Transmission of mixed bit-rate or mixed modulation data in a grid with different channel widths

To address these needs, you create a tunnel between two NCS 1004 nodes to carry traffic using the GMPLS UNI technology as shown in the following figure.

Figure 1. GMPLS UNI Reference Model
GMPLS UNI Reference Model

UNI-C is the client or packet or router node; for example, NCS 1004 nodes. UNI-N is the network or optical node; for example, NCS 2000 nodes.

The Link Management Protocol (LMP) link is created to establish connectivity between a NCS 2000 node and a NCS 1004 node. The tunnel is then created between the trunk interfaces of the source and destination NCS 1004 nodes to carry traffic. When the tunnel is created between NCS 1004 nodes, a circuit is internally created between the NCS 2000 nodes. The circuit is created to perform path computation, restoration, and reversion functions.

The tunnel can be created between the source and destination NCS 1004 nodes without involving NCS 2000 nodes in the middle. However, the restoration and reversion capabilities are provided only by the NCS 2000 nodes using GMPLS UNI.

Prerequisites

Before you create a tunnel using GMPLS UNI, fulfill these prerequisites:

  • NCS 1004 node must have both the MPLS and MPLS-TE packages. The package names are ncs1004-mpls and ncs1004-mpls-te-rsvp.

  • NCS 2000 node must have a valid license for ROADM and WSON support.

  • The management IP addresses of NCS 1004 and NCS 2000 nodes must be accessible.

  • The administrative state of the trunk port of the optics controller on the NCS 1004 node must not be in the shutdown state.

Limitations

Configuration Workflow

Perform the following tasks in sequence to create a tunnel using GMPLS UNI:

Configurations on the NCS 2000 node:

  1. GMPLS signaled LMP circuit creation.

  2. Retrieve Ifindex from NCS 2000 Node

Configurations on the node:

  1. Configure LMP on Cisco NCS 1002 Node.

  2. Configure RSVP on NCS 1004 Node

  3. Configure MPLS Tunnel on a NCS 1002 Node.

Configure LMP and Alien Wavelength on NCS 2000 Node Using CTC

This procedure creates a static LMP link to establish connectivity between a NCS 2000 node and a NCS 1004 node. The LMP creation wizard in CTC provides the capability to select source and destination endpoints of the LMP link, optical parameters, and alien wavelength settings.

Procedure

Step 1

From the View menu, choose Go to Network View.

Step 2

Click the Provisioning > LMP tabs.

Step 3

Click Create.

The LMP Creation window appears.

Step 4

Click Signaled in the Router Not Managed by CTC area.

A wizard appears with the following options:

LMP Origination, LMP Termination, Optical Parameters, and Alien Wavelength

Step 5

In the LMP Origination screen of the wizard, provision these parameters:

  • From the Originating Node drop-down list, choose the source node of the LMP.

    If the source node is Cisco NCS 1004, the destination node must be MSTP, and the other way round.

  • From the Local Interfaces drop-down list, choose an available interface.

  • Choose the Type, Shelf, Slot, and Port for Ingress Port Selection and Egress Port Selection.

  • Choose Numbered interface.

  • Enter the IP address of the source node in the Interface IP field.

  • Set the mode of revertive restoration to either UNI-C or UNI-N. If the mode is set to UNI-C, the reversion of the circuit from the restored path to the original path is initiated by the UNI client that is connected to NCS 1004. If the mode is set to UNI-N, the reversion of the circuit is initiated by the DWDM network and can either be a manual revert or an auto revert.

  • Enter the RSVP signaling interval and RSVP signaling missed values in the respective fields.

  • Click Next.

Step 6

In the LMP Termination screen of the wizard, provision these parameters:

  • From the Terminating Node drop-down list, choose the destination node of the LMP; for example, MSTP node.

  • From the Rx Port Selection area, perform the following.

    • Choose the card type from the Type drop-down list.

    • Choose a shelf from the Shelf drop-down list.

    • Choose a source slot from the Slot drop-down list

    • Choose a port from the Port drop-down list.

  • From the Tx Port Selection area, perform the following.

    • Choose the card type from the Type drop-down list.

    • Choose a shelf from the Shelf drop-down list.

    • Choose a destination slot from the Slot drop-down list.

    • Choose a port from the Port drop-down list

  • Enter the IP address of the destination node in the Interface IP field.

  • Set the mode of revertive restoration to either UNI-C or UNI-N. If the mode is set to UNI-C, the reversion of the circuit from the restored path to the original path is initiated by the UNI client that is connected. If the mode is set to UNI-N, the reversion of the circuit is initiated by the DWDM network and can be either a manual revert or an auto revert.

  • Enter the remote Ifindex of NCS 1004 node (in decimals) in the Remote If Index field.

  • Click Next.

Step 7

In the Optical Parameters screen of the wizard, provision these parameters:

  • Allow Regeneration—When checked, the computed path traverses through the regeneration site only if the optical validation is not satisfied. You can regenerate a circuit that is created from the UNI interface. If a transparent path is feasible, the regenerator is not used.

  • UNI State—Choose Enable or Disable from the UNI State drop-down list.

    The Enable state is used to configure the UNI interface for the circuits to pass through, between the router and the DWDM node. In the Disable state, the interface is configured but not active, and so the circuit activation is rejected. When the status is changed from Enable to Disable, all active circuits on the interface are deleted.

  • Description—Enter the description of the UNI interface. The description can be up to 256 characters.

  • Label—Enter an alphanumeric string. This label is a unique circuit identifier.

  • Validation—Sets the optical validation mode.

    • Full—The circuit is created when the circuit validation result is greater than or equal to the acceptance threshold value.

    • None—The circuit is created without considering the acceptance threshold value. The Opt Valid column in the Circuits tab displays the value as Not Valid.

    • Inherited—The restoration circuit inherits the validation and acceptance threshold values from the primary circuit.

  • Acceptance threshold—Sets the acceptance threshold value for the GMPLS circuit. The circuit is created if the actual acceptance threshold value is greater than, or equal to, the value set in this field.

    • Green—Indicates that the channel failure risk is 0%.

    • Yellow—Indicates that the channel failure risk is between 0% and 16%.

    • Orange—Indicates that the channel failure risk is between 16% and 50%.

    • Red—Indicates that the channel failure risk is greater that 50%.

  • Restoration—Check this check box to enable the restoration of the GMPLS circuits on the UNI interface.

  • Revert—Check this check box to enable the revert of the GMPLS circuits on the UNI interface.

  • Auto Revert—Click this radio button to automatically revert the circuit from the restored path to the original path after the failure is fixed, WSON alarms are acknowledged, and the soak time expires.

  • Manual Revert—Click this radio button to manually revert the circuit from the restored path to the original path after the failure is fixed, the WSON alarms are acknowledged, and the soak time expires.

  • Soak Time—Enter the time (in hours, minutes, and seconds) in the Soak Time field that the circuit on the restored path waits before moving to the original path after the failure is fixed. The circuit reverts to the original path after the soak time expires. The soak time must be set only if both the Restoration and Revert check boxes are checked.

Step 8

Click Next.

Step 9

In the Alien wavelength screen of the wizard, provision these parameters.

  • From the Alien Wavelength drop-down list, choose the alien wavelength class.

  • From the Trunk Selection drop-down list, choose 100G, 200G, or 250G.

  • From the FEC drop-down list, choose a valid value for forward error correction (FEC) mode. If an invalid FEC value is chosen, LMP link is created; however, the circuit creation fails.

  • Click Finish to create an LMP link.

    The newly created LMP link appears in the LMP table in CTC.

Configure LMP and Alien Wavelength on NCS 2000 Node Using CTC for Signaled Unnumbered Circuit

This procedure creates a static LMP unnumbered link to establish connectivity between a NCS 2000 node and a NCS 1004 node. The LMP creation wizard in CTC provides the capability to select source and destination endpoints of the LMP link, optical parameters, and alien wavelength settings.

SUMMARY STEPS

  1. From the View menu, choose Go to Network View.
  2. Click the Provisioning > LMP tabs.
  3. Click Create.
  4. Click Signaled in the Router Not Managed by CTC area.
  5. In the LMP Origination screen of the wizard, provision these parameters:
  6. In the LMP Termination screen of the wizard, provision these parameters:
  7. In the Optical Parameters screen of the wizard, provision these parameters:
  8. Click Next.
  9. In the Alien wavelength screen of the wizard, provision these parameters.

DETAILED STEPS

Step 1

From the View menu, choose Go to Network View.

Step 2

Click the Provisioning > LMP tabs.

Step 3

Click Create.

The LMP Creation window appears.

Step 4

Click Signaled in the Router Not Managed by CTC area.

A wizard appears with the following options:

LMP Origination, LMP Termination, Optical Parameters, and Alien Wavelength

Step 5

In the LMP Origination screen of the wizard, provision these parameters:

  • From the Originating Node drop-down list, choose the source node of the LMP.

  • From the Local Interfaces drop-down list, choose an available interface.

  • Choose the Type, Unit, and Port for Ingress Port Selection and Egress Port Selection.

  • Choose Unnumbered interface.

  • The IP address of the source node selected appears in the IP field.

  • Set the mode of revertive restoration to UNI-N. If the mode is set to UNI-N, the reversion of the circuit is initiated by the DWDM network and can either be a manual revert or an auto revert.

  • Click Next.

Step 6

In the LMP Termination screen of the wizard, provision these parameters:

  • From Interfaces Configuration:

    Enter the NCS 1004 system IP address in the System IP field.

  • Enter the IP address of the source node in the Communication Channel field.

  • Enter the SNMP Ifindex value of optic trunk in the Remote If Index field.

  • Click Next.

Step 7

In the Optical Parameters screen of the wizard, provision these parameters:

  • Allow Regeneration—When checked, the computed path traverses through the regeneration site only if the optical validation is not satisfied. You can regenerate a circuit that is created from the UNI interface. If a transparent path is feasible, the regenerator is not used.

  • UNI State—Choose Enable or Disable from the UNI State drop-down list.

    The Enable state is used to configure the UNI interface for the circuits to pass through, between the router and the DWDM node. In the Disable state, the interface is configured but not active, and so the circuit activation is rejected. When the status is changed from Enable to Disable, all active circuits on the interface are deleted.

  • Description—Enter the description of the UNI interface like Signal Unnumb LMP. The description can be up to 256 characters.

  • Label—Enter an alphanumeric string. This label is a unique circuit identifier.

  • Validation—Sets the optical validation mode.

    • Full—The circuit is created when the circuit validation result is greater than or equal to the acceptance threshold value.

    • None—The circuit is created without considering the acceptance threshold value. The Opt Valid column in the Circuits tab displays the value as Not Valid.

    • Inherited—The restoration circuit inherits the validation and acceptance threshold values from the primary circuit.

  • Acceptance Threshold—Sets the acceptance threshold value for the GMPLS circuit. The circuit is created if the actual acceptance threshold value is greater than, or equal to, the value set in this field.

    • Green—Indicates that the channel failure risk is 0%.

    • Yellow—Indicates that the channel failure risk is between 0% and 16%.

    • Orange—Indicates that the channel failure risk is between 16% and 50%.

    • Red—Indicates that the channel failure risk is greater than 50%.

  • Restoration—Check this check box to enable the restoration of the GMPLS circuits on the UNI interface.

  • Revert—Check this check box to enable the revert of the GMPLS circuits on the UNI interface.

  • Auto Revert—Click this radio button to automatically revert the circuit from the restored path to the original path after the failure is fixed, WSON alarms are acknowledged, and the soak time expires.

  • Manual Revert—Click this radio button to manually revert the circuit from the restored path to the original path after the failure is fixed, the WSON alarms are acknowledged, and the soak time expires.

  • Soak Time—Enter the time (in hours, minutes, and seconds) in the Soak Time field that the circuit on the restored path waits before moving to the original path after the failure is fixed. The circuit reverts to the original path after the soak time expires. The soak time must be set only if both the Restoration and Revert check boxes are checked.

Step 8

Click Next.

Step 9

In the Alien wavelength screen of the wizard, provision these parameters.

  • From the Alien Wavelength drop-down list, choose the alien wavelength class such as NCS 1004.

  • From the Trunk Selection drop-down list, choose 100G, 200G, or 250G.

  • From the FEC drop-down list, choose a valid value for forward error correction (FEC) mode. If an invalid FEC value is chosen, LMP link is created; however, the circuit creation fails.

  • Click Finish to create an LMP link.

    The newly created signaled LMP unnumbered circuit link appears in the LMP table in CTC.

Retrieve Ifindex from NCS 2000 Node

The Ifindex value of all the LMP ports of NCS 2000 node can be retrieved using CTC or TL1.

Using CTC:

From the Provisioning > LMP tab, retrieve the Ifindex value in decimal format under the Originating Interface Index column.

This Ifindex value is used in the neighbor interface-id unnumbered command during the LMP configuration configuration.

Using TL1:

  1. Log in to the TL1 interface and issue the following command.

  2. rtrv-unicfg ::all:1;

This command retrieves the Ifindex of all the LMP ports of NCS 2000 node in hexadecimal format. This must be converted to decimal format and used in remote Ifindex of NCS 1004 node during the LMP configuration.

TL1 Output


PSLINE-81-1-9-RX:PSLINE-81-1-9-TX,10.77.142.92,3.3.3.4,3.3.3.3,0.0.0.0,VALMODE=NONE,ADMINSTATE=UP,
RESTTYPE=REVERT,USPWROFS=0.0,
DSPWROFS=0.0,ALLOWREGEN=NO,UNICTRLMODE=CLIENT,REVERTMODE=MANUAL,SOAK=00-01-00,
RESTVALMODE=NONE,TERMINTFDX=0,ORIGINTFIDX=7f000d12,NUMBERED=TRUE,UNIMODE=GMPLS
PSLINE-81-1-10-RX:PSLINE-81-1-10-TX,10.77.142.92,4.4.4.4,4.4.4.3,0.0.0.0,VALMODE=NONE,ADMINSTATE=UP,
RESTTYPE=REVERT,USPWROFS=0.0,DSPWROFS=0.0,ALLOWREGEN=NO,UNICTRLMODE=CLIENT,
REVERTMODE=MANUAL,SOAK=00-01-00,RESTVALMODE=NONE,TERMINTFDX=0,
ORIGINTFIDX=7f000d14,NUMBERED=TRUE,UNIMODE=GMPLS

The Ifindex of port 81-1-9 is 7f000d12 (in hexadecimal) and 2130709778 (in decimal). The Ifindex of port 81-1-10 is 7f000d14 (in hexadecimal) and 2130709780 (in decimal).

Configure LMP on Cisco NCS 1004 Node

LMP is a logical link that is created on the trunk optics controller of the source and destination NCS 1004 nodes of the tunnel.

configure

lmp

gmpls optical-uni

controller optics Rack/Slot/Instance/Port

neighbor name

neighbor link-id ipv4 unicast ipv4-address

neighbor flexi-grid-capable

neighbor interface-id unnumbered interface-id

link-id ipv4 unicast ipv4-address

router-id ipv4 unicast ipv4-address

commit

Important Notes

  • neighbor link-id ipv4 unicast ipv4-address is the IP address of the MSTP interface on the NCS 2000 node.

  • neighbor flexi-grid-capable enables GMPLS UNI flexible grid channel spacing.

  • neighbor interface-id unnumbered interface-id is the optical interface ID of the neighbor. This value is the Ifindex value of all the LMP ports of NCS 2000 node in decimal format that is manually retrieved from CTC or TL1. See Retrieve Ifindex from NCS 2000 Node to retrieve the Ifindex.

  • link-id ipv4 unicast ipv4-address is the IP address of the optics controller on the current NCS 1004 node.

  • router-id ipv4 unicast ipv4-address is the neighbor router IP address for GMPLS UNI.

Running Configuration

The following is a sample of configuring LMP on the source NCS 1004 node.

show running-config lmp 


Mon Jul  1 14:42:46.856 IST
lmp
 gmpls optical-uni
  controller Optics0/0/0/0
   neighbor ncs1k
   neighbor link-id ipv4 unicast 10.1.1.1
   neighbor flexi-grid-capable
   neighbor interface-id unnumbered 2130706976
   link-id ipv4 unicast 10.0.1.1
  !
  controller Optics0/0/0/1
   neighbor ncs1k
   neighbor link-id ipv4 unicast 10.1.3.3
   neighbor flexi-grid-capable
   neighbor interface-id unnumbered 2130707232
   link-id ipv4 unicast 10.0.3.3
  !
  controller Optics0/1/0/0
   neighbor ncs1k
   neighbor link-id ipv4 unicast 10.1.4.4
   neighbor flexi-grid-capable
   neighbor interface-id unnumbered 2130706964
   link-id ipv4 unicast 10.0.4.4
  !
  controller Optics0/1/0/1
   neighbor ncs1k
   neighbor link-id ipv4 unicast 10.1.5.5
   neighbor flexi-grid-capable
   neighbor interface-id unnumbered 2130706966
   link-id ipv4 unicast 10.0.5.5
  !
  neighbor ncs1k
   ipcc routed
   router-id ipv4 unicast 10.127.60.48
  !
  router-id ipv4 unicast 10.105.57.101
 !
!

The following sample shows the brief summary of the tunnel status and configuration.

show mpls traffic-eng tunnels optical-uni brief 


Wed Sep 22 17:08:13.132 IST

                     TUNNEL NAME         DESTINATION      STATUS  STATE
         GMPLS-UNI-Optics0/3/0/1            10.24.1.1         up  up
         GMPLS-UNI-Optics0/0/0/1            10.34.1.1         up  up
Displayed 2 (of 2) heads, 0 (of 0) midpoints, 0 (of 0) tails
Displayed 2 up, 0 down, 0 recovering, 0 recovered heads

Configure RSVP on NCS 1004 Node

Resource Reservation Protocol (RSVP) with an appropriate timeout must be configured on the source and destination NCS 1004 nodes of the tunnel.

configure

rsvp

controller optics Rack/Slot/Instance/Port

signalling refresh out-of-band interval interval

signalling refresh out-of-band missed mis-count

commit

The following is a sample of configuring RSVP on the source NCS 1004 node. 


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#rsvp
RP/0/RP0/CPU0:ios(config-rsvp)#controller optics 0/0/0/6
RP/0/RP0/CPU0:ios(config-rsvp-cntl)#signalling refresh out-of-band interval 3600
RP/0/RP0/CPU0:ios(config-rsvp-cntl)#signalling refresh out-of-band missed 24
RP/0/RP0/CPU0:ios(config-rsvp-cntl)#commit

Configure MPLS Tunnel on a NCS 1004 Node for Numbered Circuit

Ensure that the administrative state of the trunk port of the optics controller on the NCS 1004 node is not in shutdown state.

configure

mpls traffic-eng

gmpls optical-uni

controller optics Rack/Slot/Instance/Port

tunnel-properties

tunnel-id id

destination ipv4 unicast ipv4-address

path-option 10 no-ero lockdown

commit

Important Notes

  • destination ipv4 unicast ipv4-address is the IP address of the optics controller on the destination NCS 1004 node.

  • Explicit Route Object (ERO) - Includes one or more routes to use from a list of specified nodes for a tunnel.

  • Exclude Route Object (XRO) - Excludes one or more routes to use from a list of specified nodes for a tunnel.

Running Configuration

The following is a sample of configuring the MPLS tunnel on the source NCS 1004 node. 


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#mpls traffic-eng
RP/0/RP0/CPU0:ios(config-mpls-te)#gmpls optical-uni
RP/0/RP0/CPU0:ios(config-te-gmpls-uni)#controller optics 0/0/0/6
RP/0/RP0/CPU0:ios(config-te-gmpls-cntl)#tunnel-properties
RP/0/RP0/CPU0:ios(config-te-gmpls-tun)#tunnel-id 100
RP/0/RP0/CPU0:ios(config-te-gmpls-tun)#destination ipv4 unicast 10.20.20.20
RP/0/RP0/CPU0:ios(config-te-gmpls-tun)#path-option 10 no-ero lockdown
RP/0/RP0/CPU0:ios(config-te-gmpls-tun)#commit

The following is a sample of configuring the MPLS tunnel on the destination NCS 1004 node. 


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#mpls traffic-eng
RP/0/RP0/CPU0:ios(config-mpls-te)#gmpls optical-uni
RP/0/RP0/CPU0:ios(config-te-gmpls-uni)#controller optics 0/0/0/6
RP/0/RP0/CPU0:ios(config-te-gmpls-uni)#commit

Verification

Use the show commands in the following table to verify the GMPLS UNI tunnel, RSVP, and LMP configuration.

Table 1. Show Commands

Show Commands

Description

show mpls traffic-eng link-management optical-uni controller optics

Displays detailed GMPLS information of a specific optics controller.

show mpls traffic-eng link-management optical-uni

Displays detailed GMPLS information of all the optics controllers.

show mpls traffic-eng tunnels

Displays information about tunnels.

show mpls traffic-eng link-management optical-uni tabular

Displays detailed GMPLS information of all the optics controllers in tabular format.

show mpls traffic-eng tunnels tabular

Displays information about all the tunnels in tabular format.

show lmp gmpls optical-uni

Verifies LMP configuration and state.

show rsvp neighbors

Displays information about RSVP neighbors.

Sample Outputs

show mpls traffic-eng link-management optical-uni controller optics 0/0/0/13

Displays detailed GMPLS information of a specific optics controller.


Mon Jul  1 20:05:27.209 IST
Optical interface: Optics0/0/0/0
  Overview:
    IM state: Up
    Child interface: : IM state Unknown
    OLM/LMP state: Up
    Optical tunnel state: up
  Connection:
    Tunnel role: Tail
    Tunnel-id: 15, LSP-id 3, Extended tunnel-id 10.105.57.100
    Tunnel source: 10.105.57.100, destination: 10.11.1.1
    Optical router-ids: Local: 10.105.57.101, Remote: 10.127.60.48
    Label source: UNI-N
    Upstream label:
      Optical label:
      Grid                : DWDM
      Channel spacing     : 6.25 GHz
      Identifier          : 0
      Channel Number      : -277
    Downstream label:
      Optical label:
      Grid                : DWDM
      Channel spacing     : 6.25 GHz
      Identifier          : 0
      Channel Number      : -277
    SRLG discovery: Disabled
    SRLG announcement: None
    Switching Type: lsc
    MTU: 9212
  Admission Control:
    Upstream: Admitted (LSP ID: 3)
    Downstream: Admitted (LSP ID: 3)
  OLM/LMP adjacency information:
    Adjacency status: Up
    Local:
      node ID: 10.105.57.101
      link interface ID: 10
      link ID: 10.11.1.1
    Neighbor:
      node ID: 10.127.60.48 (VEGA2K-Site-3_48)
      link interface ID: 2130706976
      link ID: 10.1.1.1
      IPCC: Routed to 10.127.60.48
  Optical capabilities:
    Controller type: DWDM
    Channel spacing: 6.25 GHz
    Default channel: 0
    784 supported channels:
      -303, -302, -301, -300, -299, -298, -297, -296
      -295, -294, -293, -292, -291, -290, -289, -288
      -287, -286, -285, -284, -283, -282, -281, -280
      -279, -278, -277, -276, -275, -274, -273, -272
      -271, -270, -269, -268, -267, -266, -265, -264
      -263, -262, -261, -260, -259, -258, -257, -256
      -255, -254, -253, -252, -251, -250, -249, -248
      -247, -246, -245, -244, -243, -242, -241, -240
      -239, -238, -237, -236, -235, -234, -233, -232
      -231, -230, -229, -228, -227, -226, -225, -224
      -223, -222, -221, -220, -219, -218, -217, -216
      -215, -214, -213, -212, -211, -210, -209, -208
      -207, -206, -205, -204, -203, -202, -201, -200
      -199, -198, -197, -196, -195, -194, -193, -192
      -191, -190, -189, -188, -187, -186, -185, -184
      -183, -182, -181, -180, -179, -178, -177, -176
      -175, -174, -173, -172, -171, -170, -169, -168
      -167, -166, -165, -164, -163, -162, -161, -160
      -159, -158, -157, -156, -155, -154, -153, -152
      -151, -150, -149, -148, -147, -146, -145, -144
      -143, -142, -141, -140, -139, -138, -137, -136
      -135, -134, -133, -132, -131, -130, -129, -128
      -127, -126, -125, -124, -123, -122, -121, -120
      -119, -118, -117, -116, -115, -114, -113, -112
      -111, -110, -109, -108, -107, -106, -105, -104
      -103, -102, -101, -100, -99, -98, -97, -96
      -95, -94, -93, -92, -91, -90, -89, -88
      -87, -86, -85, -84, -83, -82, -81, -80
      -79, -78, -77, -76, -75, -74, -73, -72
      -71, -70, -69, -68, -67, -66, -65, -64
      -63, -62, -61, -60, -59, -58, -57, -56
      -55, -54, -53, -52, -51, -50, -49, -48
      -47, -46, -45, -44, -43, -42, -41, -40
      -39, -38, -37, -36, -35, -34, -33, -32
      -31, -30, -29, -28, -27, -26, -25, -24
      -23, -22, -21, -20, -19, -18, -17, -16
      -15, -14, -13, -12, -11, -10, -9, -8
      -7, -6, -5, -4, -3, -2, -1, 0
      1, 2, 3, 4, 5, 6, 7, 8
      9, 10, 11, 12, 13, 14, 15, 16
      17, 18, 19, 20, 21, 22, 23, 24
      25, 26, 27, 28, 29, 30, 31, 32
      33, 34, 35, 36, 37, 38, 39, 40
      41, 42, 43, 44, 45, 46, 47, 48
      49, 50, 51, 52, 53, 54, 55, 56
      57, 58, 59, 60, 61, 62, 63, 64
      65, 66, 67, 68, 69, 70, 71, 72
      73, 74, 75, 76, 77, 78, 79, 80
      81, 82, 83, 84, 85, 86, 87, 88
      89, 90, 91, 92, 93, 94, 95, 96
      97, 98, 99, 100, 101, 102, 103, 104
      105, 106, 107, 108, 109, 110, 111, 112
      113, 114, 115, 116, 117, 118, 119, 120
      121, 122, 123, 124, 125, 126, 127, 128
      129, 130, 131, 132, 133, 134, 135, 136
      137, 138, 139, 140, 141, 142, 143, 144
      145, 146, 147, 148, 149, 150, 151, 152
      153, 154, 155, 156, 157, 158, 159, 160
      161, 162, 163, 164, 165, 166, 167, 168
      169, 170, 171, 172, 173, 174, 175, 176
      177, 178, 179, 180, 181, 182, 183, 184
      185, 186, 187, 188, 189, 190, 191, 192
      193, 194, 195, 196, 197, 198, 199, 200
      201, 202, 203, 204, 205, 206, 207, 208
      209, 210, 211, 212, 213, 214, 215, 216
      217, 218, 219, 220, 221, 222, 223, 224
      225, 226, 227, 228, 229, 230, 231, 232
      233, 234, 235, 236, 237, 238, 239, 240
      241, 242, 243, 244, 245, 246, 247, 248
      249, 250, 251, 252, 253, 254, 255, 256
      257, 258, 259, 260, 261, 262, 263, 264
      265, 266, 267, 268, 269, 270, 271, 272
      273, 274, 275, 276, 277, 278, 279, 280
      281, 282, 283, 284, 285, 286, 287, 288
      289, 290, 291, 292, 293, 294, 295, 296
      297, 298, 299, 300, 301, 302, 303, 304
      305, 306, 307, 308, 309, 310, 311, 312
      313, 314, 315, 316, 317, 318, 319, 320
      321, 322, 323, 324, 325, 326, 327, 328
      329, 330, 331, 332, 333, 334, 335, 336
      337, 338, 339, 340, 341, 342, 343, 344
      345, 346, 347, 348, 349, 350, 351, 352
      353, 354, 355, 356, 357, 358, 359, 360
      361, 362, 363, 364, 365, 366, 367, 368
      369, 370, 371, 372, 373, 374, 375, 376
      377, 378, 379, 380, 381, 382, 383, 384
      385, 386, 387, 388, 389, 390, 391, 392
      393, 394, 395, 396, 397, 398, 399, 400
      401, 402, 403, 404, 405, 406, 407, 408
      409, 410, 411, 412, 413, 414, 415, 416
      417, 418, 419, 420, 421, 422, 423, 424
      425, 426, 427, 428, 429, 430, 431, 432
      433, 434, 435, 436, 437, 438, 439, 440
      441, 442, 443, 444, 445, 446, 447, 448
      449, 450, 451, 452, 453, 454, 455, 456
      457, 458, 459, 460, 461, 462, 463, 464
      465, 466, 467, 468, 469, 470, 471, 472
      473, 474, 475, 476, 477, 478, 479, 480
    Controller SRLGs
      None

show mpls traffic-eng link-management optical-uni

Displays detailed GMPLS information of all the optics controllers. MPLS tunnels are not created when the optics controller is in the shutdown state. The state is displayed as Admin down. Enter the no shutdown command under the optics controller to initiate the tunnel creation. 


Mon Jul  1 20:00:42.108 IST

System Information:
  Optical Links Count: 1 (Maximum Links Supported 100)

Optical interface: Optics0/0/0/0
  Overview:
    IM state: Up
    Child interface: : IM state Unknown
    OLM/LMP state: Up
    Optical tunnel state: up
  Connection:
    Tunnel role: Tail
    Tunnel-id: 15, LSP-id 3, Extended tunnel-id 10.105.57.100
    Tunnel source: 10.105.57.100, destination: 10.11.1.1
    Optical router-ids: Local: 10.105.57.101, Remote: 10.127.60.48
    Label source: UNI-N
    Upstream label:
      Optical label:
      Grid                : DWDM
      Channel spacing     : 6.25 GHz
      Identifier          : 0
      Channel Number      : -277
    Downstream label:
      Optical label:
      Grid                : DWDM
      Channel spacing     : 6.25 GHz
      Identifier          : 0
      Channel Number      : -277
    SRLG discovery: Disabled
    SRLG announcement: None
    Switching Type: lsc
    MTU: 9212
  Admission Control:
    Upstream: Admitted (LSP ID: 3)
    Downstream: Admitted (LSP ID: 3)
  OLM/LMP adjacency information:
    Adjacency status: Up
    Local:
      node ID: 10.105.57.101
      link interface ID: 10
      link ID: 10.11.1.1
    Neighbor:
      node ID: 10.127.60.48 (VEGA2K-Site-3_48)
      link interface ID: 2130706976
      link ID: 10.1.1.1
      IPCC: Routed to 10.127.60.48
  Optical capabilities:
    Controller type: DWDM
    Channel spacing: 6.25 GHz
    Default channel: 0
    784 supported channels:
      -303, -302, -301, -300, -299, -298, -297, -296
      -295, -294, -293, -292, -291, -290, -289, -288
      -287, -286, -285, -284, -283, -282, -281, -280
      -279, -278, -277, -276, -275, -274, -273, -272
      -271, -270, -269, -268, -267, -266, -265, -264
      -263, -262, -261, -260, -259, -258, -257, -256
      -255, -254, -253, -252, -251, -250, -249, -248
      -247, -246, -245, -244, -243, -242, -241, -240
      -239, -238, -237, -236, -235, -234, -233, -232
      -231, -230, -229, -228, -227, -226, -225, -224
      -223, -222, -221, -220, -219, -218, -217, -216
      -215, -214, -213, -212, -211, -210, -209, -208
      -207, -206, -205, -204, -203, -202, -201, -200
      -199, -198, -197, -196, -195, -194, -193, -192
      -191, -190, -189, -188, -187, -186, -185, -184
      -183, -182, -181, -180, -179, -178, -177, -176
      -175, -174, -173, -172, -171, -170, -169, -168
      -167, -166, -165, -164, -163, -162, -161, -160
      -159, -158, -157, -156, -155, -154, -153, -152
      -151, -150, -149, -148, -147, -146, -145, -144
      -143, -142, -141, -140, -139, -138, -137, -136
      -135, -134, -133, -132, -131, -130, -129, -128
      -127, -126, -125, -124, -123, -122, -121, -120
      -119, -118, -117, -116, -115, -114, -113, -112
      -111, -110, -109, -108, -107, -106, -105, -104
      -103, -102, -101, -100, -99, -98, -97, -96
      -95, -94, -93, -92, -91, -90, -89, -88
      -87, -86, -85, -84, -83, -82, -81, -80
      -79, -78, -77, -76, -75, -74, -73, -72
      -71, -70, -69, -68, -67, -66, -65, -64
      -63, -62, -61, -60, -59, -58, -57, -56
      -55, -54, -53, -52, -51, -50, -49, -48
      -47, -46, -45, -44, -43, -42, -41, -40
      -39, -38, -37, -36, -35, -34, -33, -32
      -31, -30, -29, -28, -27, -26, -25, -24
      -23, -22, -21, -20, -19, -18, -17, -16
      -15, -14, -13, -12, -11, -10, -9, -8
      -7, -6, -5, -4, -3, -2, -1, 0
      1, 2, 3, 4, 5, 6, 7, 8
      9, 10, 11, 12, 13, 14, 15, 16
      17, 18, 19, 20, 21, 22, 23, 24
      25, 26, 27, 28, 29, 30, 31, 32
      33, 34, 35, 36, 37, 38, 39, 40
      41, 42, 43, 44, 45, 46, 47, 48
      49, 50, 51, 52, 53, 54, 55, 56
      57, 58, 59, 60, 61, 62, 63, 64
      65, 66, 67, 68, 69, 70, 71, 72
      73, 74, 75, 76, 77, 78, 79, 80
      81, 82, 83, 84, 85, 86, 87, 88
      89, 90, 91, 92, 93, 94, 95, 96
      97, 98, 99, 100, 101, 102, 103, 104
      105, 106, 107, 108, 109, 110, 111, 112
      113, 114, 115, 116, 117, 118, 119, 120
      121, 122, 123, 124, 125, 126, 127, 128
      129, 130, 131, 132, 133, 134, 135, 136
      137, 138, 139, 140, 141, 142, 143, 144
      145, 146, 147, 148, 149, 150, 151, 152
      153, 154, 155, 156, 157, 158, 159, 160
      161, 162, 163, 164, 165, 166, 167, 168
      169, 170, 171, 172, 173, 174, 175, 176
      177, 178, 179, 180, 181, 182, 183, 184
      185, 186, 187, 188, 189, 190, 191, 192
      193, 194, 195, 196, 197, 198, 199, 200
      201, 202, 203, 204, 205, 206, 207, 208
      209, 210, 211, 212, 213, 214, 215, 216
      217, 218, 219, 220, 221, 222, 223, 224
      225, 226, 227, 228, 229, 230, 231, 232
      233, 234, 235, 236, 237, 238, 239, 240
      241, 242, 243, 244, 245, 246, 247, 248
      249, 250, 251, 252, 253, 254, 255, 256
      257, 258, 259, 260, 261, 262, 263, 264
      265, 266, 267, 268, 269, 270, 271, 272
      273, 274, 275, 276, 277, 278, 279, 280
      281, 282, 283, 284, 285, 286, 287, 288
      289, 290, 291, 292, 293, 294, 295, 296
      297, 298, 299, 300, 301, 302, 303, 304
      305, 306, 307, 308, 309, 310, 311, 312
      313, 314, 315, 316, 317, 318, 319, 320
      321, 322, 323, 324, 325, 326, 327, 328
      329, 330, 331, 332, 333, 334, 335, 336
      337, 338, 339, 340, 341, 342, 343, 344
      345, 346, 347, 348, 349, 350, 351, 352
      353, 354, 355, 356, 357, 358, 359, 360
      361, 362, 363, 364, 365, 366, 367, 368
      369, 370, 371, 372, 373, 374, 375, 376
      377, 378, 379, 380, 381, 382, 383, 384
      385, 386, 387, 388, 389, 390, 391, 392
      393, 394, 395, 396, 397, 398, 399, 400
      401, 402, 403, 404, 405, 406, 407, 408
      409, 410, 411, 412, 413, 414, 415, 416
      417, 418, 419, 420, 421, 422, 423, 424
      425, 426, 427, 428, 429, 430, 431, 432
      433, 434, 435, 436, 437, 438, 439, 440
      441, 442, 443, 444, 445, 446, 447, 448
      449, 450, 451, 452, 453, 454, 455, 456
      457, 458, 459, 460, 461, 462, 463, 464
      465, 466, 467, 468, 469, 470, 471, 472
      473, 474, 475, 476, 477, 478, 479, 480
    Controller SRLGs
      None

show mpls traffic-eng link-management optical-uni tabular

Displays detailed GMPLS information of all the optics controllers in tabular format.


Mon Jul  1 15:10:50.472 IST

System Information:
  Optical Links Count: 4 (Maximum Links Supported 100)

                  State          LMP          GMPLS tunnel
Interface      Admin  Oper    adjacency    role  tun-id  state
--------------------------------------------------------------
     Op0/0/0/0    up    up        up       Tail      15     up
     Op0/0/0/1    up    up        up       Tail      16     up
     Op0/1/0/0    up    up        up       Tail      17     up
     Op0/1/0/1    up    up        up       Tail      18     up

show mpls traffic-eng tunnels

Displays information about tunnels. 


Mon Jul  1 15:03:58.490 IST


LSP Tunnel 10.105.57.100 15 [5] is signalled, Signaling State: up
  Tunnel Name: ckt0/0/0/0 Tunnel Role: Tail
  Upstream label:
    Optical label:
    Grid                : DWDM
    Channel spacing     : 6.25 GHz
    Identifier          : 0
    Channel Number      : -277
  Downstream label:
    Optical label:
    Grid                : DWDM
    Channel spacing     : 6.25 GHz
    Identifier          : 0
    Channel Number      : -277
  Signalling Info:
    Src 10.105.57.100 Dst 10.11.1.1, Tun ID 15, Tun Inst 5, Ext ID 10.105.57.100
    Router-IDs: upstream   10.127.60.48
                local      10.105.57.101
    Priority:  7  7
    SRLGs: not collected
    Path Info:
      Incoming Address: 10.1.1.1
      Incoming:
      Explicit Route:
        No ERO

      Route Exclusions:
        No XRO
      Record Route: Disabled
      Tspec: avg rate=4294967033 kbits, burst=1000 bytes, peak rate=4294967033 kbits
      Session Attributes: Local Prot: Not Set, Node Prot: Not Set, BW Prot: Not Set
    Resv Info: None
      Record Route: Disabled
      Fspec: avg rate=4294967033 kbits, burst=1000 bytes, peak rate=4294967033 kbits
Displayed 0 (of 0) heads, 0 (of 0) midpoints, 1 (of 1) tails
Displayed 0 up, 0 down, 0 recovering, 0 recovered heads

show rsvp neighbors

Displays information about RSVP neighbors. 


Mon Jul  1 14:58:48.888 IST
Global Neighbor: 10.127.60.48
  Interface Neighbor   Interface
  -------------------- ------------
  10.127.60.48         MgmtEth0/RP0/CPU0/0

show lmp gmpls optical-uni

Verifies LMP configuration and state. 


Mon Jul  1 14:55:35.492 IST

GMPLS Optical-UNI LMP Router ID: 10.105.57.101

LMP Neighbor
Name: ncs1k, IP: 10.127.60.48, Owner: GMPLS Optical-UNI
LMP: Disabled
 IPCC ID: 1, State Up
 LMP UDP port: 701
  Known via             : Configuration
  Type                  : Routed
  Destination IP        : 10.127.60.48
  Source IP             : 10.105.57.101

    Interface I/F     |  Lcl Interface ID | Lcl Link    ID | Interface LMP state
----------------------+-------------------+----------------+-----------------------
         Optics0/1/0/1                   7         10.0.5.5                   Up
         Optics0/1/0/0                   6         10.0.4.4                   Up
         Optics0/0/0/1                  11         10.0.3.3                   Up
         Optics0/0/0/0                  10         10.11.1.1                   Up

General Troubleshooting

Collect and analyze the output of the following commands for any software issues.

  • show tech-support mpls traffic-eng file filename

  • show tech-support mpls rsvp file filename

  • show lmp clients

  • show rsvp neighbors

  • show mpls traffic-eng link-management optical-uni controller optics Rack/Slot/Instance/Port

  • show mpls traffic-eng tunnels tunnel-id

Problem

Solution

When NCS 2000 node cannot route the DWDM wavelength to the destination, it displays a generic error message as No Route to destination.

As a superuser, collect and analyze the diagnostic information by entering the following address at the browser.

http://ip-address-of-head-node/diagnostics/wson