Cisco Systems 3825 manual Backup delay, Defaults Command Modes Command History, Secondary VC fails

Appendix A Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference

backup delay

backup delay

To specify how long a backup pseudowire (PW) virtual circuit (VC) should wait before resuming operation after the primary PW VC goes down, use the backup delay command in the interface configuration mode or xconnect configuration mode.

	backup delay enable-delay {disable-delay never}
Syntax Description	enable-delay	Number of seconds that elapse after the primary PW VC goes down before the
		Cisco IOS software activates the secondary PW VC. The range is 0 to 180.
		The default is 0.
	disable-delay	Number of seconds that elapse after the primary PW VC comes up before the
		Cisco IOS software deactivates the secondary PW VC. The range is 0 to 180.
		The default is 0.
	never	The secondary PW VC does not fall back to the primary PW VC if the primary
		PW VC becomes available again, unless the secondary PW VC fails.

Defaults

Command Modes

Command History

If a failover occurs, the xconnect redundancy algorithm immediately switches over or falls back to the backup or primary member in the redundancy group.

Interface configuration

Xconnect configuration

Release	Modification
12.0(31)S	This command was introduced.
12.2(28)SB	This command was integrated into Cisco IOS Release 12.2(28)SB.
12.4(11)T	This command was integrated into Cisco IOS Release 12.4(11)T.
12.2(33)SRB	This command was integrated into Cisco IOS Release 12.2(33)SRB.
12.4(16)MR	This command was integrated into Cisco IOS Release 12.4(16)MR.

Examples		The following example shows a Multiprotocol Label Switching (MPLS) xconnect with one redundant
		peer. Once a switchover to the secondary VC occurs, there is no fallback to the primary VC unless the
		secondary VC fails.
		Router# config t
		Router(config)# pseudowire-class mpls
		Router(config-pw-class)# encapsulation mpls
		Router(config-pw-class)# exit
		Router(config)# interface atm1/0/0
		Router(config-if)#xconnect 10.0.0.1 50 pw-class mpls
		Router(config-if-xconn)# backup peer 10.0.0.2 50
		Router(config-if-xconn)# backup delay 0 never
		Router(config-if-xconn)# exit
		Router(config-if)# exit
		Router(config)# exit
		Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
	A-6	OL-15667-03