Configuring the
Fabric Extender
This chapter describes how to configure a Cisco Nexus 2000 Series Fabric Extender using a parent device and includes the following sections:
- Configuring the Cisco Nexus 2000 Series Fabric Extender
- Verifying the Configuration
- Additional References
Configuring the Cisco Nexus 2000 Series Fabric Extender
This section describes how to configure the Fabric Extender.
Managing the Fabric Extender Feature Set
You can install and manage the Fabric Extender feature set.
DETAILED STEPS
Installing the Fabric Extender Feature Set
1.
configure terminal
2.
install feature-set
fex
3.
exit
DETAILED STEPS
Enabling the Fabric Extender Feature Set
You can enable the installed Fabric Extender feature set in any VDC on the device.
1.
configure terminal
2.
feature-set fex
3.
exit
DETAILED STEPS
Associating a Fabric Extender to a Fabric Interface
Associating a Fabric Extender to a Port Channel
Ensure that you have enabled the Fabric Extender feature.
1.
configure terminal
2.
interface port-channel
channel
3.
switchport mode
fex-fabric
4.
fex associate
FEX-number
5.
(Optional)
show interface
port-channel
channel
fex-intf
DETAILED STEPS
| Command or Action | Purpose | |
|---|---|---|
| Step 1 |
configure terminal
Example: switch# configure terminal switch(config)# |
Enters global configuration mode. |
| Step 2 |
interface port-channel
channel
Example: switch(config)# interface port-channel 4 switch(config-if)# |
Specifies a port channel to configure. |
| Step 3 |
switchport mode
fex-fabric
Example: switch(config-if)# switchport mode fex-fabric |
Sets the port channel to support an external Fabric Extender. |
| Step 4 |
fex associate
FEX-number
Example: switch(config-if)# fex associate 101 |
Associates a FEX number to the Fabric Extender unit attached to the interface. The range is from 101 to 199. |
| Step 5 |
show interface
port-channel
channel
fex-intf
Example: switch# show interface port-channel 4 fex-intf | (Optional)
Displays the association of a Fabric Extender to a port channel interface. |
This example shows how to associate the Fabric Extender to a port channel interface on the parent device:
switch# configure terminal switch(config)# interface ethernet 1/28 switch(config-if)# channel-group 4 switch(config-if)# no shutdown switch(config-if)# exit switch(config)# interface ethernet 1/29 switch(config-if)# channel-group 4 switch(config-if)# no shutdown switch(config-if)# exit switch(config)# interface ethernet 1/30 switch(config-if)# channel-group 4 switch(config-if)# no shutdown switch(config-if)# exit switch(config)# interface ethernet 1/31 switch(config-if)# channel-group 4 switch(config-if)# no shutdown switch(config-if)# exit switch(config)# interface port-channel 4 switch(config-if)# switchport switch(config-if)# switchport mode fex-fabric switch(config-if)# fex associate 101
 Tip | As a best practice, only enter the fex associate command from the port channel interface, not from the physical interface. |
 Note | When adding physical interfaces to port channels, all configurations on the port channel and physical interface must match. |
This example shows how to display the association of the Fabric Extender and the parent device:
switch# show interface port-channel 4 fex-intf
Fabric FEX
Interface Interfaces
---------------------------------------------------
Po4 Eth101/1/48 Eth101/1/47 Eth101/1/46 Eth101/1/45
Eth101/1/44 Eth101/1/43 Eth101/1/42 Eth101/1/41
Eth101/1/40 Eth101/1/39 Eth101/1/38 Eth101/1/37
Eth101/1/36 Eth101/1/35 Eth101/1/34 Eth101/1/33
Eth101/1/32 Eth101/1/31 Eth101/1/30 Eth101/1/29
Eth101/1/28 Eth101/1/27 Eth101/1/26 Eth101/1/25
Eth101/1/24 Eth101/1/23 Eth101/1/22 Eth101/1/21
Eth101/1/20 Eth101/1/19 Eth101/1/18 Eth101/1/17
Eth101/1/16 Eth101/1/15 Eth101/1/14 Eth101/1/13
Eth101/1/12 Eth101/1/11 Eth101/1/10 Eth101/1/9
Eth101/1/8 Eth101/1/7 Eth101/1/6 Eth101/1/5
Eth101/1/4 Eth101/1/3 Eth101/1/2 Eth101/1/1
Disassociating a Fabric Extender from an Interface
Ensure that you have enabled the Fabric Extender feature.
1.
configure terminal
2.
interface {ethernet
slot/port |
port-channel
channel}
3.
no fex associate
DETAILED STEPS
| Command or Action | Purpose | |
|---|---|---|
| Step 1 |
configure terminal
Example: switch# configure terminal switch(config)# |
Enters global configuration mode. |
| Step 2 |
interface {ethernet
slot/port |
port-channel
channel}
Example: switch(config)# interface port-channel 4 switch(config-if)# |
Specifies the interface to configure. The interface can be an Ethernet interface or a port channel. |
| Step 3 |
no fex associate
Example: switch(config-if)# no fex associate |
Disassociates the Fabric Extender unit attached to the interface. |
Configuring Fabric Extender Global Features
You can configure global features on the Fabric Extender.
Ensure that you have enabled the Fabric Extender feature set.
1.
configure terminal
2.
fex
FEX-number
3.
(Optional)
description
desc
4.
(Optional)
no description
5.
(Optional) no type
6.
(Optional)
serial
serial
7.
(Optional)
no serial
DETAILED STEPS
| Command or Action | Purpose | |||
|---|---|---|---|---|
| Step 1 |
configure terminal
Example: switch# configure terminal switch(config)# |
Enters global configuration mode. | ||
| Step 2 |
fex
FEX-number
Example: switch(config)# fex 101 switch(config-fex)# |
Enters FEX configuration mode for the specified Fabric Extender. The range of the FEX-number is from 101 to 199.
| ||
| Step 3 |
description
desc
Example: switch(config-fex)# description Rack7A-N2K | (Optional)
Specifies the description. The default is the string FEXxxxx where xxxx is the FEX number. If the FEX number is 123, the description is FEX0123. | ||
| Step 4 |
no description
Example: switch(config-fex)# no description | (Optional)
Deletes the description. | ||
| Step 5 | no type
Example: switch(config-fex)# no type | (Optional)
Deletes the FEX type. When a Fabric Extender is connected to the fabric interfaces and does not match the configured type that is saved in the binary configuration on the parent switch, all configurations for all interfaces on the Fabric Extender are deleted. | ||
| Step 6 |
serial
serial
Example: switch(config-fex)# serial JAF1339BDSK | (Optional)
Defines a serial number string. If this command is configured, a switch allows the corresponding chassis ID to associate (using the fex associate command) only if the Fabric Extender reports a matching serial number string.
| ||
| Step 7 |
no serial
Example: switch(config-fex)# no serial | (Optional)
Deletes the serial number string. |
Configuration Examples
This section contains examples of FEX configurations.
Configuring a Host Interface in a vPC Topology Connected to Two FEXs
This example shows how to configure a host vPC with a FEX (host vPC attached to two different FEXs):
| Switch 1 Configuration | Switch 2 Configuration |
|---|---|
config t feature lacp int e101/1/1-2 channel-group 10 mode active no shutdown Int port-channel10 switchport switchport mode trunk switchport trunk allowed vlan 1-20 vpc 10 |
config t feature lacp int e101/1/1-2 channel-group 10 mode active no shutdown Int port-channel10 switchport switchport mode trunk switchport trunk allowed vlan 1-20 vpc 10 |
Verifying the Configuration
This section describes how to display the configuration of the Fabric Extender and verify the chassis hardware status.
Verifying the Fabric Extender Configuration
Use the following commands to display configuration information about the defined interfaces on a Fabric Extender:
Command or Action |
Purpose |
|---|---|
| show fex [FEX-number] [detail] | Displays information about a specific Fabric Extender or all attached units. |
| show interface type number fex-intf | Displays the Fabric Extender ports that are pinned to a specific switch interface. |
| show interface fex-fabric | Displays the switch interfaces that have detected a Fabric Extender uplink. |
| show interface ethernet number transceiver [fex-fabric] | Displays the SFP+ transceiver and diagnostic optical monitoring (DOM) information for the Fabric Extender uplinks. |
| show feature-set | Displays the status of the feature sets on the device. |
Configuration Examples for the Fabric Extender
This example shows how to display all the attached Fabric Extender units:
This example shows how to display the detailed status of a specific Fabric Extender:
This example shows how to display the Fabric Extender interfaces pinned to a specific switch interface:
This example shows how to display the switch interfaces that are connected to a Fabric Extender uplink:
This example shows how to display the SFP+ transceiver and diagnostic optical monitoring (DOM) information for Fabric Extender uplinks for an SFP+ transceiver that is plugged into the parent switch interface:
switch# show interface ethernet 1/40 transceiver
Ethernet1/40
sfp is present
name is CISCO-MOLEX INC
part number is 74752-9026
revision is A0
serial number is MOC13321057
nominal bitrate is 12000 MBits/sec
Link length supported for copper is 3 m(s)
cisco id is --
cisco extended id number is 4
This example shows how to display the SFP+ transceiver and DOM information for Fabric Extender uplinks for an SFP+ transceiver that is plugged into the uplink port on the Fabric Extender:
switch# show interface ethernet 1/40 transceiver fex-fabric
Ethernet1/40
sfp is present
name is CISCO-MOLEX INC
part number is 74752-9026
revision is A0
serial number is MOC13321057
nominal bitrate is 12000 MBits/sec
Link length supported for 50/125mm fiber is 0 m(s)
Link length supported for 62.5/125mm fiber is 0 m(s)
cisco id is --
cisco extended id number is 4
Verifying the Chassis Management Information
Use the following to display configuration information used on the switch supervisor to manage the Fabric Extender.
|
Command or Action |
Purpose |
|---|---|
| show environment fex {all | FEX-number} [temperature | power | fan] |
Displays the environmental sensor status. |
| show inventory fex FEX-number |
Displays inventory information for a Fabric Extender. |
| show module fex FEX-number |
Displays module information about a Fabric Extender. |
| show sprom fex FEX-number {all | backplane | powersupply ps-num} | all |
Displays the contents of the serial PROM (SPROM) on the Fabric Extender. The unit of the power for the show sprom command is displayed in centi-amperes. |
Configuration Examples for Chassis Management
This example shows how to display the module information about all connected Fabric Extender units:
This example shows how to display the inventory information about a specific Fabric Extender:
switch# show inventory fex 101 NAME: "FEX 101 CHASSIS", DESCR: "N2K-C2248TP-1GE CHASSIS" PID: N2K-C2248TP-1GE , VID: V00 , SN: SSI13380FSM NAME: "FEX 101 Module 1", DESCR: "Fabric Extender Module: 48x1GE, 4x10GE Supervisor" PID: N2K-C2248TP-1GE , VID: V00 , SN: JAF1339BDSK NAME: "FEX 101 Fan 1", DESCR: "Fabric Extender Fan module" PID: N2K-C2248-FAN , VID: N/A , SN: N/A NAME: "FEX 101 Power Supply 2", DESCR: "Fabric Extender AC power supply" PID: NXK-PAC-400W , VID: 000, SN: LIT13370QD6
This example shows how to display the environment status for a specific Fabric Extender:
switch# show environment fex 101
Temperature Fex 101:
-----------------------------------------------------------------
Module Sensor MajorThresh MinorThres CurTemp Status
(Celsius) (Celsius) (Celsius)
-----------------------------------------------------------------
1 Outlet-1 60 50 33 ok
1 Outlet-2 60 50 38 ok
1 Inlet-1 50 40 35 ok
1 Die-1 100 90 44 ok
Fan Fex: 101:
------------------------------------------------------
Fan Model Hw Status
------------------------------------------------------
Chassis N2K-C2148-FAN -- ok
PS-1 -- -- absent
PS-2 NXK-PAC-400W -- ok
Power Supply Fex 101:
---------------------------------------------------------------------------
Voltage: 12 Volts
-----------------------------------------------------
PS Model Power Power Status
(Watts) (Amp)
-----------------------------------------------------
1 -- -- -- --
2 NXK-PAC-400W 4.32 0.36 ok
Mod Model Power Power Power Power Status
Requested Requested Allocated Allocated
(Watts) (Amp) (Watts) (Amp)
--- ------------------- ------- ---------- --------- ---------- ----------
1 N2K-C2248TP-1GE 0.00 0.00 0.00 0.00 powered-up
Power Usage Summary:
--------------------
Power Supply redundancy mode: redundant
Total Power Capacity 4.32 W
Power reserved for Supervisor(s) 0.00 W
Power currently used by Modules 0.00 W
-------------
Total Power Available 4.32 W
-------------
This example shows how to display the SPROM for a specific Fabric Extender:
switch# show sprom fex 101 all DISPLAY FEX 101 SUP sprom contents Common block: Block Signature : 0xabab Block Version : 3 Block Length : 160 Block Checksum : 0x1a1e EEPROM Size : 65535 Block Count : 3 FRU Major Type : 0x6002 FRU Minor Type : 0x0 OEM String : Cisco Systems, Inc. Product Number : N2K-C2248TP-1GE Serial Number : JAF1339BDSK Part Number : 73-12748-01 Part Revision : 11 Mfg Deviation : 0 H/W Version : 0.103 Mfg Bits : 0 Engineer Use : 0 snmpOID : 9.12.3.1.9.78.3.0 Power Consump : 1666 RMA Code : 0-0-0-0 CLEI Code : XXXXXXXXXTBDV00 VID : V00 Supervisor Module specific block: Block Signature : 0x6002 Block Version : 2 Block Length : 103 Block Checksum : 0x2686 Feature Bits : 0x0 HW Changes Bits : 0x0 Card Index : 11016 MAC Addresses : 00-00-00-00-00-00 Number of MACs : 0 Number of EPLD : 0 Port Type-Num : 1-48;2-4 Sensor #1 : 60,50 Sensor #2 : 60,50 Sensor #3 : -128,-128 Sensor #4 : -128,-128 Sensor #5 : 50,40 Sensor #6 : -128,-128 Sensor #7 : -128,-128 Sensor #8 : -128,-128 Max Connector Power: 4000 Cooling Requirement: 65 Ambient Temperature: 40 DISPLAY FEX 101 backplane sprom contents: Common block: Block Signature : 0xabab Block Version : 3 Block Length : 160 Block Checksum : 0x1947 EEPROM Size : 65535 Block Count : 5 FRU Major Type : 0x6001 FRU Minor Type : 0x0 OEM String : Cisco Systems, Inc. Product Number : N2K-C2248TP-1GE Serial Number : SSI13380FSM Part Number : 68-3601-01 Part Revision : 03 Mfg Deviation : 0 H/W Version : 1.0 Mfg Bits : 0 Engineer Use : 0 snmpOID : 9.12.3.1.3.914.0.0 Power Consump : 0 RMA Code : 0-0-0-0 CLEI Code : XXXXXXXXXTDBV00 VID : V00 Chassis specific block: Block Signature : 0x6001 Block Version : 3 Block Length : 39 Block Checksum : 0x2cf Feature Bits : 0x0 HW Changes Bits : 0x0 Stackmib OID : 0 MAC Addresses : 00-0d-ec-e3-28-00 Number of MACs : 64 OEM Enterprise : 0 OEM MIB Offset : 0 MAX Connector Power: 0 WWN software-module specific block: Block Signature : 0x6005 Block Version : 1 Block Length : 0 Block Checksum : 0x66 wwn usage bits: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 License software-module specific block: Block Signature : 0x6006 Block Version : 1 Block Length : 16 Block Checksum : 0x86f lic usage bits: ff ff ff ff ff ff ff ff DISPLAY FEX 101 power-supply 2 sprom contents: Common block: Block Signature : 0xabab Block Version : 3 Block Length : 160 Block Checksum : 0x1673 EEPROM Size : 65535 Block Count : 2 FRU Major Type : 0xab01 FRU Minor Type : 0x0 OEM String : Cisco Systems Inc NXK-PAC-400W Product Number : NXK-PAC-400W Serial Number : LIT13370QD6 Part Number : 341 Part Revision : -037 CLEI Code : 5-01 01 000 VID : 000 snmpOID : 12336.12336.12336.12336.12336.12336.12374.12336 H/W Version : 43777.2 Current : 36 RMA Code : 200-32-32-32 Power supply specific block: Block Signature : 0x0 Block Version : 0 Block Length : 0 Block Checksum : 0x0 Feature Bits : 0x0 Current 110v : 36 Current 220v : 36 Stackmib OID : 0
Additional References
This section includes additional information that is related to configuring the Cisco Nexus 2000 Series Fabric Extender.
Related Documents
|
Related Topic |
Document Title |
|---|---|
|
Cisco NX-OS Licensing |
Cisco NX-OS Licensing Guide |
|
Interface configuration |
Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide |
|
Command reference |
Cisco Nexus 9000 Series Command References |
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