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Cisco ME 3800X and 3600X Switch Software Configuration Guide
OL-23400-01
Chapter 34 Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS
Enabling EoMPLS
•
The default Label Distribution Protocol (LDP) session hold-down timer enables the software to
detect failures in about 180 seconds. You can use the mpls ldp holdtime global configuration
command to configure the switch to detect failures more quickly.
•
The primary and backup pseudowires must run the same type of transport service. You must
configure Any Transport over MPLS (AToM) on both the primary and backup pseudowires.
•
L2VPN pseudowire redundancy does not support different pseudowire encapsulation types on the
MPLS pseudowire.
•
L2VPN pseudowire redundancy does support setting the experimental (EXP) bit on the MPLS
pseudowire.
•
The switch does not support LDP MAC address withdrawal.
•
The mpls l2transport route command is not supported. Use the xconnect command instead.
•
The backup pseudowire cannot be operational at the same time that the primary pseudowire is
operational. The backup pseudowire becomes active only after the primary pseudowire fails.
•
VCCV is supported only on the active pseudowire.
•
The switch does not support more than one backup pseudowire.
Configuring Pseudowire Redundancy
When configuring pseudowire redundancy, you use the xconnect interface configuration command for
each transport type. Beginning in privileged EXEC mode, follow these steps to configure pseudowire
redundancy on a PE router:
Step 1
configure terminal
Enter global configuration mode.
Step 2
interface interface-id
Specify an interface and enter interface configuration mode.
The interface on the adjoining router must be on the same
VLAN as this router.
Step 3
xconnect
peer-router-id vcid
pw-class
pw-class
name
Bind the attachment circuit to a pseudowire virtual circuit
(VC) and enter xconnect configuration mode.
Step 4
backup peer
peer-router-ip-address vcid [
pw-class
pw-class name]
Specify a redundant peer for the pseudowire VC. If you do
not specify a pw-class name, the value is inherited from the
parent.
Step 5
backup delay
enable-delay {disable-delay |
never
} Specify the delays before pseudowire takeovers.
•
enable-delay— Specify how long (in seconds) the
backup pseudowire VC waits to take over after the
primary pseudowire VC goes down. The range is 0 to 180
seconds; the default is 0.
•
disable-delay— Specify how long (in seconds) the
primary pseudowire waits after it becomes active to take
over from the backup pseudowire. The range is 0 to 180
seconds; the default is 0.
•
If you enter never, the switchback to the primary
pseudowire never occurs.
Step 6
end
Return to privileged EXEC mode.
