MPLS Transport Profile

MPLS-TP tunnels provide the transport network service layer over which IP and MPLS traffic traverse. MPLS-TP tunnels help transition from SONET/SDH TDM technologies to packet switching to support services with high bandwidth utilization and lower cost. Transport networks are connection oriented, statically provisioned, and have long-lived connections. Transport networks usually avoid control protocols that change identifiers (like labels). MPLS-TP tunnels provide this functionality through statically provisioned bidirectional label switched paths (LSPs), as shown in the figure below.

MPLS-TP LSPs support 1-to-1 path protection. You can configure the working and protect LSPs as part of configuring the MPLS-TP tunnel. The working LSP is the primary LSP used to route traffic. The protect LSP is a backup for a working LSP. If the working LSP fails, traffic is switched to the protect LSP until the working LSP is restored, at which time forwarding reverts back to the working LSP.

MPLS-TP LSPs are bidirectional and co-routed and are comprised of two unidirectional LSPs that are supported by the MPLS forwarding infrastructure. A TP tunnel consists of a pair of unidirectional tunnels providing a bidirectional LSP. Each unidirectional tunnel can optionally be protected with a protect LSP that activates automatically upon failure conditions.

Several OAM protocols and messages support the provisioning and maintenance of MPLS-TP tunnels and bidirectional LSPs:

• MPLS-TP OAM: GACH: Generic Associated Channel (G-ACh) is the control channel mechanism associated with MPLS LSPs in addition to MPLS pseudowire. The G-ACh Label (GAL) (Label 13) is a generic alert label to identify the presence of the G-ACh in the label packet. It is taken from the reserved MPLS label space.

G-ACh/GAL is used to support in-band OAMs of MPLS LSPs and PWs. The OAM messages are used for fault management, connection verification, continuity check and other functions.

The following OAM messages are forwarded along the specified MPLS LSP:

• • OAM Fault Management: AIS, LDI and LKR messages. (GAL with fault-OAM channel)
  • OAM Connection Verification: ping and traceroute messages. (GAL with IP channel by default)
  • OAM Continuity Check: BFD (non-IP BFD and IP BFD) messages. (GAL with BFD channel or IP channel depending on message format)

The following messages are forwarded along the specified PW:

• • Static PW OAM messages (static PW status)
  • PW ping and traceroute messages
  • PW BFD messages
• MPLS-TP OAM: Fault Management: Link Down Indication (LDI), Alarm Indication Signal (AIS), and Lock Report (LKR) messages. LDI messages are generated at midpoint nodes when a failure is detected. At the midpoint, an LDI message will be sent to the endpoint that is reachable with the existing failure. Similarly, LKR messages will be sent from a midpoint node to the reachable endpoint when an interface is administratively shut. AIS messages are not generated by Cisco, but are processed if received. By default, reception of LDI and LKR on the active LSP at an endpoint will cause a path protection switchover, while AIS will not.
• MPLS-TP OAM: Fault Management: Emulated Protection Switching for LSP Lockout. Cisco implements a form of Emulated Protection Switching in support of LSP Lockout using customized Fault messages. When a Cisco Lockout message is sent, it does not cause the LSP to be administratively down. The Cisco Lockout message causes a path protection switchover and prevents data traffic from using the LSP. The LSP remains up so that BFD and other OAM messages can continue to traverse it. Maintenance of the LSP can take place (such as reconfiguring or replacing a midpoint LSR). The LSP is shown as UP and OAM can verify connectivity before the LSP is put back into service by removing the lockout. Lockout of the working LSP is not allowed if no protect LSP is configured. Alternatively, lockout of the protect LSP is allowed if no working LSP is configured.
• LSP ping and trace: For MPLS-TP connectivity verification, you can use ping mpls tp and trace mpls tpcommands. You can specify that the echo requests be sent along either the working LSP, the protect LSP, or the active LSP. You can also specify that the echo request be sent on a locked out MPLS-TP tunnel LSP (either working or protect) if the working or protect LSP is explicitly specified.
• MPLS-TP OAM: Continuity Check via BFD: You can configure BFD sessions running over MPLS-TP LSPs. BFD sessions run on both the working LSP and the protect LSP. In order to perform a path protection switchover within 60 msec on an MPLS-TP endpoint, the BFD Hardware Offload feature enables the router hardware to construct and send BFD messages, which removes the task from the software path. You do not need to configure the BFD Hardware Offload feature. It works automatically on supported platforms. You must enable BFD.

MPLS-TP supports the following combinations of static and dynamic multisegment pseudowires:

• Static-static
• Static-dynamic
• Dynamic-static

MPLS-TP supports one-to-one L2VPN pseudowire redundancy for the following combinations of static and dynamic pseudowires:

• Static pseudowire with a static backup pseudowire
• Static pseudowire with a dynamic backup pseudowire
• Dynamic pseudowire with a static backup pseudowire

With static pseudowires, status notifications can be provided by BFD over VCCV or static pseudowire OAM protocol. However, BFD over VCCV sends only attachment circuit status code notifications. Hop-by-hop notifications of other pseudowire status codes are not supported. Therefore, static pseudowire OAM protocol is preferred. You can acquire per pseudowire OAM for attachment circuit/pseudowire notification over VCCV channel with or without the control word.

MPLS-TP link numbers may be assigned to physical interfaces only. Bundled interfaces and virtual interfaces are not supported for MPLS-TP link numbers.

The MPLS-TP link is used to create a level of indirection between the MPLS-TP tunnel and midpoint LSP configuration and the physical interface. The mpls tp linkcommand is used to associate an MPLS-TP link number with a physical interface and next-hop node. On point-to-point interfaces or Ethernet interfaces designated as point-to-point using the medium p2p command, the next-hop can be implicit, so the mpls tp linkcommand just associates a link number to the interface.

Multiple tunnels and LSPs may then refer to the MPLS-TP link to indicate they are traversing that interface. You can move the MPLS-TP link from one interface to another without reconfiguring all the MPLS-TP tunnels and LSPs that refer to the link.

Link numbers must be unique on the router or node.

See Configuring MPLS-TP Links and Physical Interfaces for more information.

Tunnel LSPs, whether endpoint or midpoint, use the same identifying information. However, it is entered differently.

• At the midpoint, all the information for the LSP is specified with the mpls tp lsp command, which enters the submode for configuring forward and reverse information for forwarding.
• At the midpoint, determining which end is source and which is destination is arbitrary. That is, if you are configuring a tunnel between your router and a coworker's router, then your router is the source. However, your coworker considers his or her router to be the source. At the midpoint, either router could be considered the source. At the midpoint, the forward direction is from source to destination, and the reverse direction is from destination to source.
• At the endpoint, the local information (source) either comes from the global router ID and global ID, or from locally configured information using the tp sourcecommand after you enter the command interface tunnel-tp numbercommand, where number is the local/source tunnel-number.
• At the endpoint, the remote information (destination) is configured using the tp destination command after you enter the command interface tunnel-tp number. The tp destination command includes the destination node ID, optionally the global ID, and optionally the destination tunnel number. If you do not specify the destination tunnel number, the source tunnel number is used.
• At the endpoint, the LSP number is configured in working-lsp or protect-lsp submode. The default is 0 for the working LSP and 1 for the protect LSP.
• When configuring the LSPs at the midpoint routers, make that the configuration does not reflect traffic back to the originating node.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    mpls label range minimum-value maximum-value {static minimum-static-value maximum-static-value}

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	mpls label range minimum-value maximum-value {static minimum-static-value maximum-static-value} Example: Router(config)# mpls label range 1001 1003 static 10000 25000	Specifies a static range of MPLS labels

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    mpls tp

4.    router-id node-id

5.    global-id num

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	mpls tp Example: Router(config)# mpls tp	Enters MPLS-TP configuration mode, from which you can configure MPLS-TP parameters for the router.
Step 4	router-id node-id Example: Router(config-mpls-tp)# router-id 10.10.10.10	Specifies the default MPLS-TP router ID, which is used as the default source node ID for all MPLS-TP tunnels configured on the router.
Step 5	global-id num Example: Router(config-mpls-tp)# global-id 1	(Optional) Specifies the default global ID used for all endpoints and midpoints. This command makes the router ID globally unique in a multiprovider tunnel. Otherwise, the router ID is only locally meaningful. The global ID is an autonomous system number, which is a controlled number space by which providers can identify each other. The router ID and global ID are also included in fault messages by routers at tunnel midpoints to help isolate the location of faults.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    bfd-template single-hop template-name

4.    interval [microseconds] {both time| min-tx time min-rx time} [multiplier multiplier-value]

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	bfd-template single-hop template-name Example: Router(config)# bfd-template single-hop mpls-bfd-1	Creates a BFD template and enter BFD configuration mode.
Step 4	interval [microseconds] {both time| min-tx time min-rx time} [multiplier multiplier-value] Example: Router(config-bfd)# interval min-tx 99 min-rx 99 multiplier 3	Specifies a set of BFD interval values.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    pseudowire-static-oam class class-name

4.    timeout refresh send seconds

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	pseudowire-static-oam class class-name Example: Router(config)# pseudowire-static-oam class oam-class1	Creates a pseudowire OAM class and enters pseudowire OAM class configuration mode.
Step 4	timeout refresh send seconds Example: Router(config-st-pw-oam-class)# timeout refresh send 20	Specifies the OAM timeout refresh intervals.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    pseudowire-class class-name

4.    encapsulation mpls

5.    control-word

6.    protocol {l2tpv2 | l2tpv3 | none} [l2tp-class-name]

7.    preferred-path {interface tunnel tunnel-number | peer {ip-address | host-name}} [disable-fallback]

8.    status protocol notification static class-name

9.    vccv bfd template name [udp | raw-bfd]

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	pseudowire-class class-name Example: Router(config)# pseudowire-class mpls-tp-class1	Creates a pseudowire class and enters pseudowire class configuration mode.
Step 4	encapsulation mpls Example: Router(config-pw-class)# encapsulation mpls	Specifies the encapsulation type.
Step 5	control-word Example: Router(config-pw-class)# control-word	Enables the use of the control word.
Step 6	protocol {l2tpv2 | l2tpv3 | none} [l2tp-class-name] Example: Router(config-pw-class)# protocol none	Specifies the type of protocol.
Step 7	preferred-path {interface tunnel tunnel-number | peer {ip-address | host-name}} [disable-fallback] Example: Router(config-pw-class)# preferred-path interface tunnel-tp2	Specifies the tunnel to use as the preferred path.
Step 8	status protocol notification static class-name Example: Router(config-pw-class)# status protocol notification static oam-class1	Specifies the OAM class to use.
Step 9	vccv bfd template name [udp | raw-bfd] Example: Router(config-pw-class)# vccv bfd template bfd-temp1 raw-bfd	Specifies the VCCV BFD template to use.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    interface type number

4.    xconnect peer-ip-address vc-id {encapsulation {l2tpv3 [manual] | mpls [manual]} | pw-class pw-class-name} [pw-class pw-class-name] [sequencing {transmit | receive | both}]

5.    mpls label local-pseudowire-label remote-pseudowire-label

6.    mpls control-word

7.    backup delay {enable-delay-period | never} {disable-delay-period | never}

8.    backup peer peer-router-ip-addr vcid [pw-class pw-class-name] [priority value]

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	interface type number Example: Router(config)# interface Ethernet 1/0	Specifies the interface and enters interface configuration mode.
Step 4	xconnect peer-ip-address vc-id {encapsulation {l2tpv3 [manual] | mpls [manual]} | pw-class pw-class-name} [pw-class pw-class-name] [sequencing {transmit | receive | both}] Example: Router(config-if)# xconnect 10.131.191.251 100 encapsulation mpls manual pw-class mpls-tp-class1	Binds the attachment circuit to a pseudowire VC and enters xconnect interface configuration mode.
Step 5	mpls label local-pseudowire-label remote-pseudowire-label Example: Router(config-if-xconn)# mpls label 100 150	Configures the static pseudowire connection by defining local and remote circuit labels.
Step 6	mpls control-word Example: Router(config-if-xconn)# no mpls control-word	Specifies the control word.
Step 7	backup delay {enable-delay-period | never} {disable-delay-period | never} Example: Router(config-if-xconn)# backup delay 0 never	Specifies how long a backup pseudowire virtual circuit (VC) should wait before resuming operation after the primary pseudowire VC goes down.
Step 8	backup peer peer-router-ip-addr vcid [pw-class pw-class-name] [priority value] Example: Router(config-if-xconn)# backup peer 10.0.0.2 50	Specifies a redundant peer for a pseudowire virtual circuit (VC).

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    interface tunnel-tp number

4.    description tunnel-description

5.    tp tunnel-name name

6.    tp bandwidth num

7.    tp source node-id [global-id num]

8.    tp destination node-id [[tunnel-tp num] global-id num]

9.    bfd bfd-template

10.    working-lsp

11.    in-label num

12.    out-label num out-link num

13.    exit

14.    protect-lsp

15.    in-label num

16.    out-label num out-link num

17.    exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	interface tunnel-tp number Example: Router(config)# interface tunnel-tp 2	Enters tunnel interface configuration mode. Tunnel numbers from 0 to 999 are supported.
Step 4	description tunnel-description Example: Router(config-if)# description headend tunnel	(Optional) Specifies a tunnel description.
Step 5	tp tunnel-name name Example: Router(config-if)# tp tunnel-name tunnel22	Specifies the name of the MPLS-TP tunnel. The TP tunnel name is displayed in the show mpls tp tunnelcommand output. This command is useful for consistently identifying the tunnel at all endpoints and midpoints.
Step 6	tp bandwidth num Example: Router(config-if)# tp bandwidth 10000	Specifies the tunnel bandwidth.
Step 7	tp source node-id [global-id num] Example: Router(config-if)# tp source 10.10.11.11 global-id 10	(Optional) Specifies the tunnel source and endpoint. This command is and not typically used, because the global router ID and global ID can be used to identify the tunnel source at the endpoint. All tunnels on the router generally use the same (globally specified) source information.
Step 8	tp destination node-id [[tunnel-tp num] global-id num] Example: Router(config-if)# tp destination 10.10.10.10	Specifies the destination node of the tunnel.
Step 9	bfd bfd-template Example: Router(config-if)# bfd mpls-tp-bfd-2	Specifies the BFD template.
Step 10	working-lsp Example: Router(config-if)# working-lsp	Specifies a working LSP, also known as the primary LSP. This LSP is used to route traffic. This command enters working LSP interface configuration mode (config-if-working).
Step 11	in-label num Example: Router(config-if-working)# in-label 111	Specifies the in label.
Step 12	out-label num out-link num Example: Router(config-if-working)# out-label 112 out-link 1	Specifies the out label and out link.
Step 13	exit Example: Router(config-if-working)# exit	Exits from working LSP interface configuration mode.
Step 14	protect-lsp Example: Router(config-if)# protect-lsp	Specifies a backup for a working LSP. If the working LSP fails, traffic is switched to the protect LSP until the working LSP is restored, at which time forwarding reverts back to the working LSP. This command enters protect LSP interface configuration mode (config-if-protect).
Step 15	in-label num Example: Router(config-if-protect)# in-label 100	Specifies the in label.
Step 16	out-label num out-link num Example: Router(config-if-protect)# out-label 113 out-link 2	Specifies the out label and out link.
Step 17	exit Example: Router(config-if-protect)# exit	Exits from protect LSP interface configuration mode.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    mpls tp lsp source node-id [global-id num] tunnel-tp num lsp{lsp-num | protect | working} destination node-id [global-id num] tunnel-tp num

4.    forward-lsp

5.    bandwidth num

6.    in-label num out-label num out-link num

7.    exit

8.    reverse-lsp

9.    bandwidth num

10.    in-label num out-label num out-link num

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	mpls tp lsp source node-id [global-id num] tunnel-tp num lsp{lsp-num | protect | working} destination node-id [global-id num] tunnel-tp num Example: Router(config)# mpls tp lsp source 10.10.10.10 global-id 2 tunnel-tp 4 lsp protect destination 10.11.11.11 global-id 11 tunnel-tp 12	Enables MPLS-TP midpoint connectivity and enters MPLS TP LSP configuration mode.
Step 4	forward-lsp Example: Router(config-mpls-tp-lsp)# forward-lsp	Enters MPLS-TP LSP forward LSP configuration mode.
Step 5	bandwidth num Example: Router(config-mpls-tp-lsp-forw)# bandwidth 100	Specifies the bandwidth.
Step 6	in-label num out-label num out-link num Example: Router(config-mpls-tp-lsp-forw)# in-label 53 out-label 43 out-link 41	Specifies the in label, out label, and out link numbers.
Step 7	exit Example: Router(config-mpls-tp-lsp-forw)# exit	Exits MPLS-TP LSP forward LSP configuration mode.
Step 8	reverse-lsp Example: Router(config-mpls-tp-lsp)# reverse-lsp	Enters MPLS-TP LSP reverse LSP configuration mode.
Step 9	bandwidth num Example: Router(config-mpls-tp-lsp-rev)# bandwidth 100	Specifies the bandwidth.
Step 10	in-label num out-label num out-link num Example: Router(config-mpls-tp-lsp-rev)# in-label 33 out-label 23 out-link 44	Specifies the in label, out label, and out link numbers.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    interface type/num

4.    ip address ip-address mask

5.    mpls tp link link-num {ipv4 ip-address | tx-mac mac-address} rx-mac mac-address

6.    ip rsvp bandwidth [rdm [bc0 interface-bandwidth] [[single-flow-bandwidth [bc1 bandwidth | sub-pool bandwidth]]] [interface-bandwidth [single-flow-bandwidth [bc1 bandwidth | sub-pool bandwidth]] | mam max-reservable-bw [interface-bandwidth [single-flow-bandwidth] [bc0 interface-bandwidth [bc1 bandwidth]]] | percent percent-bandwidth [single-flow-bandwidth]]

7.    exit

8.    exit

9.    show mpls tp link-numbers

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	interface type/num Example: Router(config)# interface ethernet 1/0	Specifies the interface and enters interface configuration mode.
Step 4	ip address ip-address mask Example: Router(config-if)# ip address 10.10.10.10 255.255.255.0	Assigns an IP address to the interface.
Step 5	mpls tp link link-num {ipv4 ip-address | tx-mac mac-address} rx-mac mac-address Example: Router(config-if)# mpls tp link 1 ipv4 10.0.0.2	Associates an MPLS-TP link number with a physical interface and next-hop node. On point-to-point interfaces or Ethernet interfaces designated as point-to-point using the medium p2p command, the next-hop can be implicit, so the mpls tp linkcommand just associates a link number to the interface. Multiple tunnels and LSPs can refer to the MPLS-TP link to indicate they are traversing that interface. You can move the MPLS-TP link from one interface to another without reconfiguring all the MPLS-TP tunnels and LSPs that refer to the link. Link numbers a must be unique on the router or node.
Step 6	ip rsvp bandwidth [rdm [bc0 interface-bandwidth] [[single-flow-bandwidth [bc1 bandwidth | sub-pool bandwidth]]] [interface-bandwidth [single-flow-bandwidth [bc1 bandwidth | sub-pool bandwidth]] | mam max-reservable-bw [interface-bandwidth [single-flow-bandwidth] [bc0 interface-bandwidth [bc1 bandwidth]]] | percent percent-bandwidth [single-flow-bandwidth]] Example: Router(config-if)# ip rsvp bandwidth 1158 100	Enables Resource Reservation Protocol (RSVP) bandwidth for IP on an interface. For the Cisco 7600 platform, if you configure non-zero bandwidth for the TP tunnel or at a midpoint LSP, make sure that the interface to which the output link is attached has enough bandwidth available. For example, if three tunnel LSPs run over link 1 and each LSP was assigned 1000 with the tp bandwidth command, the interface associated with link 1 needs bandwidth of 3000 with the ip rsvp bandwidth command.
Step 7	exit Example: Router(config-if)# exit	Exits interface configuration mode.
Step 8	exit Example: Router(config)# exit	Exits global configuration mode.
Step 9	show mpls tp link-numbers Example: Router# show mpls tp link-numbers	Displays the configured links.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    l2 vfi name point-to-point

4.    neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name}

5.    mpls label local-pseudowire-label remote-pseudowire-label

6.    mpls control-word

7.    neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name}

8.    mpls label local-pseudowire-label remote-pseudowire-label

9.    mpls control-word

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	l2 vfi name point-to-point Example: Router(config)# l2 vfi atom point-to-point	Creates a point-to-point Layer 2 virtual forwarding interface (VFI) and enters VFI configuration mode.
Step 4	neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name} Example: Router(config-vfi)# neighbor 10.111.111.111 123 pw-class atom	Sets up an emulated VC. Specify the IP address and the VC ID of the remote router. Also specify the pseudowire class to use for the emulated VC. Note: Only two neighbor commands are allowed for each l2 vfi point-to-point command.
Step 5	mpls label local-pseudowire-label remote-pseudowire-label Example: Router(config-vfi)# mpls label 101 201	Configures the static pseudowire connection by defining local and remote circuit labels.
Step 6	mpls control-word Example: Router(config-vfi)# mpls control-word	Specifies the control word.
Step 7	neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name} Example: Router(config-vfi)#	Sets up an emulated VC. Specify the IP address and the VC ID of the remote router. Also specify the pseudowire class to use for the emulated VC.
Step 8	mpls label local-pseudowire-label remote-pseudowire-label Example: Router(config-vfi)# Router(config-vfi)# mpls label 102 202	Configures the static pseudowire connection by defining local and remote circuit labels.
Step 9	mpls control-word Example: Example: Router(config-vfi)# mpls control-word	Specifies the control word.

What to Do Next

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    pseudowire-tlv template template-name

4.    tlv [type-name] type-value length [dec | hexstr | str] value

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	pseudowire-tlv template template-name Example: Router(config)# pseudowire-tlv template statictemp	Creates a template of pseudowire type-length-value (TLV) parameters
Step 4	tlv [type-name] type-value length [dec | hexstr | str] value Example: Router(config-pw-tlv-template)# tlv statictemp 2 4 hexstr 1	Specifies the TLV parameters.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    pseudowire-class class-name

4.    encapsulation mpls

5.    control-word

6.    protocol {l2tpv2 | l2tpv3 | none} [l2tp-class-name]

7.    exit

8.    pseudowire-class class-name

9.    encapsulation mpls

10.    exit

11.    l2 vfi name point-to-point

12.    neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name}

13.    neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name}

14.    mpls label local-pseudowire-label remote-pseudowire-label

15.    mpls control-word

16.    local interface pseudowire-type

17.   Do one of the following:

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	pseudowire-class class-name Example: Router(config)# pseudowire-class mpls-tp-class1	Creates a pseudowire class and enters pseudowire class configuration mode.
Step 4	encapsulation mpls Example: Router(config-pw-class)# encapsulation mpls	Specifies the encapsulation type.
Step 5	control-word Example: Router(config-pw-class)# control-word	Enables the use of the control word.
Step 6	protocol {l2tpv2 | l2tpv3 | none} [l2tp-class-name] Example: Router(config-pw-class)# protocol none	Specifies the type of protocol. Use the protocol none command to specify a static pseudowire.
Step 7	exit Example: Router(config-pw-class)# exit	Exits pseudowire class configuration mode.
Step 8	pseudowire-class class-name Example: Router(config)# pseudowire-class mpls-tp-class1	Creates a pseudowire class and enters pseudowire class configuration mode.
Step 9	encapsulation mpls Example: Router(config-pw-class)# encapsulation mpls	Specifies the encapsulation type.
Step 10	exit Example: Router(config-pw-class)# exit	Exits pseudowire class configuration mode.
Step 11	l2 vfi name point-to-point Example: Router(config)# l2 vfi atom point-to-point	Creates a point-to-point Layer 2 virtual forwarding interface (VFI) and enters VFI configuration mode.
Step 12	neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name} Example: Router(config-vfi)# neighbor 10.111.111.111 123 pw-class atom	Sets up an emulated VC. Specify the IP address and the VC ID of the remote router. Also specify the pseudowire class to use for the emulated VC. Enters config-vfi-neighbor command mode. Note: Only two neighbor commands are allowed for each l2 vfi point-to-point command.
Step 13	neighbor ip-address vc-id {encapsulation mpls | pw-class pw-class-name} Example: Router(config-vfi-neighbor)# neighbor 10.111.111.111 123 pw-class atom	Sets up an emulated VC. Specify the IP address and the VC ID of the remote router. Also specify the pseudowire class to use for the emulated VC. Note: Only two neighbor commands are allowed for each l2 vfi point-to-point command.
Step 14	mpls label local-pseudowire-label remote-pseudowire-label Example: Router(config-vfi-neighbor)# mpls label 101 201	Configures the static pseudowire connection by defining local and remote circuit labels.
Step 15	mpls control-word Example: Router(config-vfi-neighbor)# mpls control-word	Specifies the control word.
Step 16	local interface pseudowire-type Example: Router(config-vfi-neighbor)# local interface 4	Specifies the pseudowire type and enters VFI neighbor interface configuration mode.
Step 17	Do one of the following: tlv [type-name] type-value length [dec | hexstr | str] value tlv template template-name Example: Router(config-vfi-neighbor)# tlv statictemp 2 4 hexstr 1	Specifies the TLV parameters or invokes a previously configured TLV template.

• Example
  

l2 vfi atom point-to-point  (static-dynamic MSPW)
neighbor 10.116.116.116 4294967295 pw-class dypw     (dynamic)
neighbor 10.111.111.111 123 pw-class stpw            (static)
  mpls label 101 201
  mpls control-word
   local interface 4
     tlv mtu 1 4 1500
     tlv description 3 6 str abcd
     tlv descr C 4 hexstr 0505

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    interface ethernet type/num

4.    service instance id ethernet

5.    encapsulation dot1q vlan-id

6.    xconnect peer-ip-address vc-id {encapsulation {l2tpv3 [manual] | mpls [manual]} | pw-class pw-class-name} [pw-class pw-class-name] [sequencing {transmit | receive | both}]

7.    mpls label local-pseudowire-label remote-pseudowire-label

8.    mpls control-word

9.    backup delay {enable-delay-period | never} {disable-delay-period | never}

10.    backup peer peer-router-ip-addr vcid [pw-class pw-class-name] [priority value]

11.    mpls label local-pseudowire-label remote-pseudowire-label

12.    mpls control-word

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	interface ethernet type/num Example: Router(config)# interface ethernet 1/0	Specifies the interfaces and enters interface configuration mode.
Step 4	service instance id ethernet Example: Router(config-if)# service instance 1 ethernet	Specifies the service instance and enters service instance interface configuration mode.
Step 5	encapsulation dot1q vlan-id Example: Router(config-if-srv)# encapsulation dot1q 10	Enables the interface to accept 802.1Q VLAN packets.
Step 6	xconnect peer-ip-address vc-id {encapsulation {l2tpv3 [manual] | mpls [manual]} | pw-class pw-class-name} [pw-class pw-class-name] [sequencing {transmit | receive | both}] Example: Router(config-if-srv)# xconnect 10.109.10.10 123encapsulation mpls manual pw-class stpw	Binds the attachment circuit to a pseudowire VC and enters xconnect configuration mode.
Step 7	mpls label local-pseudowire-label remote-pseudowire-label Example: Router(cfg-if-ether-vc-xconn)# mpls label 100 150	Configures the static pseudowire connection by defining local and remote circuit labels.
Step 8	mpls control-word Example: Router(cfg-if-ether-vc-xconn)# no mpls control-word	Specifies the control word.
Step 9	backup delay {enable-delay-period | never} {disable-delay-period | never} Example: Router(cfg-if-ether-vc-xconn)# backup delay 0 never	Specifies how long a backup pseudowire virtual circuit (VC) should wait before resuming operation after the primary pseudowire VC goes down.
Step 10	backup peer peer-router-ip-addr vcid [pw-class pw-class-name] [priority value] Example: Router(cfg-if-ether-vc-xconn)# backup peer 10.0.0.2 50	Specifies a redundant peer for a pseudowire virtual circuit (VC). Enters backup xconnect configuration mode.
Step 11	mpls label local-pseudowire-label remote-pseudowire-label Example: Router(cfg-if-ether-vc-xconn-bkup)# mpls label 100 150	Configures the static pseudowire connection by defining local and remote circuit labels.
Step 12	mpls control-word Example: Router(cfg-if-ether-vc-xconn-bkup)# no mpls control-word	Specifies the control word.

• Example
  

interface Ethernet1/0
 no ip address
 no shutdown
 service instance 1 ethernet
  encapsulation dot1q 10
  xconnect 10.113.113.113 123 encapsulation mpls manual pw-class stpw
   mpls label 0 101
   mpls control-word
   backup peer 1 0.120.120.120 124 pw-class stpw
    mpls label 0 105
    mpls control-word

When the entire tunnel is programmed, use the following commands to verify and help troubleshoot the configuration:

• show mpls tp tunnel-tp lsps: To ensure that both LSPs are up and working from a tunnel endpoint.
• show mpls tp tunnel-tp number detail : To help determine the cause if the tunnel is not up and working.
• show bfd neighbors mpls-tp: To display the state of BFD, which must be up for the endpoint LSPs to be up.
• trace mpls tp and ping mpls tp: To help isolate any connectivity issues.
• debug mpls tp : To enable the display of MPLS-TP error messages.
• logging (MPLS-TP): To enable the display of logging messages related to configuration changes or state changes.
• show mpls l2transport static-oam: To enable the display of MPLS-TP messages related to pseudowires.