initial-ttl

Configures the Hello packet time to live (TTL) (the number of hops a Hello message can traverse after leaving the device and before the Hello message is dropped).
Syntax
initial-ttl number
no initial-ttl number
Command Default

The default TTL is 2.

Parameters
number
Specifies the number of hops a Hello message can traverse after leaving the device and before the Hello message is dropped. The range is from 1 through 255. The default value is 2.
Modes

VSRP VRID configuration mode

Usage Guidelines

When a VSRP device (master or backup) sends a VSRP Hello packet, the device subtracts one from the TTL. Thus, if the TTL is 2, the device that originates the Hello packet sends it out with a TTL of 1. Each subsequent device that receives the packet also subtracts one from the packet TTL. When the packet has a TTL of 1, the receiving device subtracts 1 and then drops the packet because the TTL is zero.

A metro ring counts as one hop, regardless of the number of nodes in the ring.

The no form of the command sets the TTL to the default value.

Examples

The following examples sets the TTL to 5. 

device(config)# vlan 200
device(config-vlan-200)# tagged ethernet 1/1/1 to 1/1/8
device(config-vlan-200)# vsrp vrid 1
device(config-vlan-200-vrid-1)# initial-ttl 5
Parent topic: Commands I