Foundry Networks FESX Manual page 186

Foundry Configuration Guide for the FESX, FSX, and FWSX
Parameter Description
Time-to-Live The maximum number of hops a VSRP Hello packet
(TTL) can traverse before being dropped. You can specify
from 1 – 255.
Hello interval The amount of time between Hello messages from
the Master to the Backups for a given VRID.
The interval can be from 1 – 84 seconds.
Dead interval The amount of time a Backup waits for a Hello
message from the Master for the VRID before
determining that the Master is no longer active.
If the Master does not send a Hello message before
the dead interval expires, the Backups negotiate
(compare priorities) to select a new Master for the
VRID.
Backup Hello The amount of time between Hello messages from a
state and Backup to the Master.
interval
The message interval can be from 60 – 3600
seconds.
You must enable the Backup to send the messages.
The messages are disabled by default on Backups.
The current Master sends Hello messages by default.
Hold-down The amount of time a Backup that has sent a Hello
interval packet announcing its intent to become Master waits
before beginning to forward traffic for the VRID. The
hold-down interval prevents Layer 2 loops from
occurring during VSRP's rapid failover.
The interval can from 1 – 84 seconds.
Track priority A VSRP priority value assigned to the tracked port(s).
If a tracked port's link goes down, the VRID port's
VSRP priority is reduced by the amount of the tracked
port's priority.
Track port A track port is a port or virtual routing interface that is
outside the VRID but whose link state is tracked by
the VRID. Typically, the tracked interface represents
the other side of VRID traffic flow through the device.
If the link for a tracked interface goes down, the VSRP
priority of the VRID interface is changed, causing the
devices to renegotiate for Master.
Backup preempt Prevents a Backup with a higher VSRP priority from
mode taking control of the VRID from another Backup that
has a lower priority but has already assumed control
of the VRID.
VRID active The active state of the VSRP VRID.
state
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Table 8.5: VSRP Parameters (Continued)
© Foundry Networks, Inc.
Default See page...
2 8-31
One second 8-32
Three times the Hello 8-32
Interval
Disabled 8-32
60 seconds when
enabled
2 seconds 8-32
5 8-33
None 8-33
Enabled 8-33
Disabled 8-27
December 2005