Quick Steps For Configuring Static Fast Re-Route - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Quick Steps for Configuring MPLS
2
Configure the label-map pop operation using the
command:
-> configure router mpls interface vlan-10 label-map 888 pop
The above command pops (removes) label 888 off of the label stack and then forwards the packet on to the
customer site. This action marks the end of MPLS label switching and the static LSP tunnel.
3
Optional. By default, the MPLS label-map is administratively enabled. To disable the administrative
status of the label-map, use the
example:
-> configure router mpls interface vlan-10 label-map 888 shutdown

Quick Steps for Configuring Static Fast Re-Route

Static Fast ReRoute (FRR) provides a mechanism for rerouting traffic to an alternate path in the event a
primary path goes down. This mechanism is implicitly invoked when the following occurs:
•
A backup static LSP tunnel is created on the same ingress router as the primary tunnel.
•
A protect-swap label-map is created on a transit router to protect the next-hop segment in the LSP.
Quick Steps for Configuring a Backup Static LSP
The following steps provide a quick tutorial for configuring a backup static LSP tunnel:
1
On the ingress router for the primary (protected) static LSP tunnel, configure another static LSP (with a
different name) using the
-> configure router mpls static-lsp to-R3-backup
2
Configure the destination of the "to-R3-backup" static LSP using the
to command. Specify the same destination system IP (Loopback0) address that is used by the protected
static LSP. For example, the following command configures 10.10.10.2 as the destination for "to-R3-
backup". The protected LSP is also configured with the 10.10.10.2 destination address.
-> configure router mpls static-lsp to-R3-backup to 10.10.10.2
When the above command is used, "to-R3-backup" automatically becomes a backup tunnel for the pro-
tected static LSP. In other words, there are now redundant static LSP tunnels. FRR will redirect traffic to the
backup tunnel if the protected tunnel is down.
3
Configure the MPLS push operation and next-hop value for "to-R3-backup" using the
router mpls static-lsp push next-hop
backup tunnel, not the next router in the protected tunnel. For example:
-> configure router mpls static-lsp to-R3-backup push 777 next-hop 192.168.11.1
The above command pushes label 777 onto the top of the label stack and then forwards the packet to the to
192.168.11.1, which is the next-hop router in the "to-R3-backup" path.
4
By default, a static LSP is disabled when it is created. To enable the static LSP use the
router mpls static-lsp shutdown
command enables the "to-R3-backup" static LSP:
-> configure router mpls static-lsp to-R3-backup no shutdown
page 10-10
configure router mpls interface label-map shutdown
configure router mpls static-lsp
command. Specify the system IP address for the next router in the
command with the no shutdown option. For example, the following
OmniSwitch AOS Release 6 Network Configuration Guide
configure router mpls interface label-map pop
command. For example:
configure router mpls static-lsp
Configuring MPLS
command. For
configure
configure
September 2009