Pwe3 Over Mlppp; Pwe3 Redundancy - Cisco 3825 Software Configuration Manual

New Features in Cisco IOS Release 12.4(16)MR1
If you issue the show mpls l2transport vc detail command, the output is similar to the following:

PWE3 over MLPPP

PWE3 over MLPPP (Multi-Link Point-to-Point Protocol) enables PWE3 establishment over multilink
backhaul. With this feature it is possible to use multilink as an MPLS or L2TPV3 (for ATM over
L2TPv3) enabled backhaul between two MWRs acting as PE routers. This feature does not need any
special configuration apart from enabling MPLS on MLPPP and using an MLPPP ip address for ip
routing between two MWRs acting as PE routers.
Existing command MPLS IP has been added to this feature to enable MPLS forwarding of IPv4 packets
along normally routed paths for a designated interface.
The following example illustrates that label switching is enabled on a designated Ethernet interface:

PWE3 Redundancy

The PWE3 Redundancy feature enables you to configure your network to detect a failure in the network
and reroute the Layer 2 (L2) service to another endpoint that can continue to provide service. This
feature provides the ability to recover from a failure of the PE router or the link between the PE and the
CE router.
Existing command backup peer has been added to this feature to specify a redundant peer for a PW VC.
Existing command backup delay has been added to this feature to specify how long a backup PW VC
should wait before resuming operation after the primary PW VC goes down.
Existing command xconnect logging redundancy has been added to this feature to enable system
message log (syslog) reporting of the status of the xconnect redundancy group.
The following example enables syslog reporting of the status of the xconnect redundancy group and
shows the messages that are generated during switchover events:
Activating the Primary Member
00:01:07: %XCONNECT-5-REDUNDANCY: Activating primary member 10.55.55.2:1000
Activating the Backup Member:
00:01:05: %XCONNECT-5-REDUNDANCY: Activating secondary member 10.55.55.3:1001
Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
1-24
Router# show mpls l2transport vc detail
Local interface: Fa0/0.1 up, line protocol up, Eth VLAN 2 up
Destination address: 10.1.1.1, VC ID: 2, VC status: up
.
.
.
Local interface: Fa0/1 up, line protocol up, Ethernet up
Destination address: 10.1.1.1, VC ID: 8, VC status: up
Router# configure terminal
Router(config)# interface multilink1
Router(config-if)# mpls ip
Router(config)# xconnect logging redundancy
Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router
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