3Com MSR 50, MSR 30 manual Vrrp un-check ttl, Vrrp vrid preempt-mode, 2231

2231

vrrp un-check ttl

Syntax vrrp un-check ttl

undo vrrp un-check ttl

View Interface view

Parameter None

Description Use the vrrp un-check ttl command to disable TTL check on VRRP packets.

Use the undo vrrp un-check ttl command to enable TTL check on VRRP packets.

By default, TTL check on VRRP packets is enabled.

Example # Disable TTL check on VRRP packets.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] vrrp un-check ttl

vrrp vrid preempt-mode

Syntax vrrp vrid virtual-router-idpreempt-mode [ timer delay delay-value]

undo vrrp vrid virtual-router-idpreempt-mode [ timer delay ]

View Interface view

Parameter virtual-router-id: Virtual router ID or VRRP standby group number, in the range 1 to 255.

timer delay delay-value: Sets preemption delay. The delay-valueargument ranges from 0 to 255 and defaults to 0, in seconds.

Description Use the vrrp vrid preempt-modecommand to enable preemption on the router and configure its preemption delay in the specified standby group.

Use the undo vrrp vrid preempt-modecommand to disable preemption on the router in the specified standby group.

Use the undo vrrp vrid preempt-mode timer delay command to restore the default preemption delay, that is, zero seconds.

The default mode is immediate preemption without delay.

On an instable network, the standby group member in the backup state may not normally receive the packets from the master member due to network congestion,