Dell PowerConnect B-FCXs, Руководство по настройке

Страница: 408 / 1494

366 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Virtual Switch Redundancy Protocol (VSRP)
10
Preference of
timer source When you save a Backup configuration, the software
can save the configured VSRP timer values or the
VSRP timer values received from the Master.
Saving the current timer values instead of the
configured ones helps ensure consistent timer usage
for all the VRID devices.
NOTE: The Backup always gets its timer scale value
from the Master.
Configured timer
values are saved page 371
Time-to-Live
(TTL) The maximum number of hops a VSRP Hello packet
can traverse before being dropped. You can specify
from 1 – 255. 2 page 372
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. One second page 372
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determining that the Master is no longer active.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. Three times the Hello
Interval page 373
Backup Hello
state and
interval The amount of time between Hello messages from a
Backup to the Master.
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. Disabled
60 seconds when
enabled page 373
Hold-down
interval The amount of time a Backup that has sent a Hello
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 rapid failover.
The interval can from 1 – 84 seconds. 2 seconds page 374
Track priority A VSRP priority value assigned to the tracked ports. If
a tracked port link goes down, the VRID port VSRP
priority is reduced by the amount of the tracked port
priority. 5 page 374
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. None page 374
Backup preempt
mode Prevents a Backup with a higher VSRP priority from
taking control of the VRID from another Backup that
has a lower priority but has already assumed control
of the VRID. Enabled page 375
VRID active state The active state of the VSRP VRID. Disabled page 367
TABLE 63 VSRP parameters (Continued)
Parameter Description Default See page...