Dell PowerConnect FCS624S Configuration Guide - Page 416

10 Virtual Switch Redundancy Protocol (VSRP) Changing the hold-down interval The hold-down interval prevents Layer 2 loops from occurring during failover, by delaying the new Master from forwarding traffic long enough to ensure that the failed Master is really unavailable. To change the Hold-down interval, enter a command such as the following at the configuration level for the VRID. PowerConnect(config-vlan-200-vrid-1)#hold-down-interval 4 Syntax: [no] hold-down-interval The parameter specifies the hold-down interval and can be from 1 - 84 seconds. The default is 2 seconds. NOTE If you change the timer scale, the change affects the actual number of seconds. Changing the default track priority When you configure a VRID to track the link state of other interfaces, if one of the tracked interface goes down, the software changes the VSRP priority of the VRID interface. The software reduces the VRID priority by the amount of the priority of the tracked interface that went down. For example, if the VSRP interface priority is 100 and a tracked interface with track priority 60 goes down, the software changes the VSRP interface priority to 40. If another tracked interface goes down, the software reduces the VRID priority again, by the amount of the tracked interface track priority. The default track priority for all track ports is 1. You can change the default track priority or override the default for an individual track port. • To change the default track priority, use the backup track-priority command, described below. • To override the default track priority for a specific track port, use the track-port command. Refer to "Specifying a track port" on page 374. To change the track priority, enter a command such as the following at the configuration level for the VRID. PowerConnect(config-vlan-200-vrid-1)#backup track-priority 2 Syntax: [no] backup [priority ] [track-priority ] Specifying a track port You can configure the VRID on one interface to track the link state of another interface on the device. This capability is useful for tracking the state of the exit interface for the path for which the VRID is providing redundancy. Refer to "VSRP priority calculation" on page 360. To configure a VRID to track an interface, enter a command such as the following at the configuration level for the VRID. PowerConnect(config-vlan-200-vrid-1)#track-port e 2/4 Syntax: [no] track-port ethernet [/] | ve [priority ] The priority parameter changes the VSRP priority of the interface. If this interface goes down, the VRID VSRP priority is reduced by the amount of the track port priority you specify here. 374 PowerConnect B-Series FCX Configuration Guide 53-1002266-01