Dell PowerConnect FCS624S Configuration Guide - Page 408

10 Virtual Switch Redundancy Protocol (VSRP) TABLE 63 VSRP parameters (Continued) Parameter Description Default 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 Time-to-Live (TTL) The maximum number of hops a VSRP Hello packet 2 can traverse before being dropped. You can specify from 1 - 255. Hello interval The amount of time between Hello messages from the One second 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amount of time a Backup waits for a Hello message from the Master for the VRID before determining that the Master is no longer active.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. Three times the Hello Interval 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 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 Track priority A VSRP priority value assigned to the tracked ports. If 5 a tracked port link goes down, the VRID port VSRP priority is reduced by the amount of the tracked port 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. None 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 VRID active state The active state of the VSRP VRID. Disabled See page... page 371 page 372 page 372 page 373 page 373 page 374 page 374 page 374 page 375 page 367 366 PowerConnect B-Series FCX Configuration Guide 53-1002266-01