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0
Default
size — Specifies amount of increase to to ICMP PDU.
Parameters
timeout
Syntax
timeout seconds
no timeout
config>vrrp vrrp-policy-id>priority-event>host-unreachable ip-addr
Context
This command defines the time, in seconds, that must pass before considering the far-end IP host
Description
unresponsive to an outstanding ICMP echo request message.
The timeout value is not directly related to the configured interval parameter. The timeout value
may be larger, equal, or smaller, relative to the interval value.
If the timeout value is larger than the interval value, multiple ICMP echo request messages may be
outstanding. Every ICMP echo request message transmitted to the far end host is tracked individually
according to the message identifier and sequence number.
With each consecutive attempt to send an ICMP echo request message, the timeout timer is loaded
with the timeout value. The timer decrements until:
Note that it is possible for a required ARP request to succeed or timeout after the message timeout
timer expires. In this case, the message request is unsuccessful.
If an ICMP echo reply message is not received prior to the timeout period for a given ICMP echo
request, that request is considered to be dropped and increments the consecutive message drop
counter for the priority event.
If an ICMP echo reply message with the same sequence number as an outstanding ICMP echo request
message is received prior to that message timing out, the request is considered successful. The
consecutive message drop counter is cleared and the request message no longer is outstanding.
If an ICMP Echo Reply message with a sequence number equal to an ICMP echo request sequence
number that had previously timed out is received, that reply is silently discarded while incrementing
the priority event reply discard counter.
The no form of the command reverts to the default value.
1
Default
7450 ESS OS Router Configuration Guide
0 — 16384
Values
• An internal error occurs preventing message sending (request unsuccessful).
• An internal error occurs preventing message reply receiving (request unsuccessful).
• A required route table entry does not exist to reach the IP address (request unsuccessful).
• A required ARP entry does not exist and ARP request timed out (request unsuccessful).
• A valid reply is received (request successful).
VRRP
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