Nortel Networks WEB OS 212777 - Manual (Page 262)

Web OS 10.0 Application Guide
262 n Chapter 11: High Availability
212777-A, February 2002
Each tracked parameter has a user-configurable weight associated with it. As the count associ-
ated with each tracked item increases (or decreases), so does the VRRP router’s priority, sub-
ject to the weighting associated with each tracked item. If the priority level of a backup is
greater than that of the current master, then the backup can assume the role of the master.
See “Configuring the Switch for Tracking” on page 280 for an example on how to configure
the switch for tracking VRRP priority.
Number of physical switch ports that
have active Layer 4 processing on the
switch
/cfg/vrrp/track/l4pts
Helps elect the main Layer 4 switch as the master.
This parameter influences the VRRP router's prior-
ity in both virtual interface routers and virtual server
routers.
Number of healthy real servers behind
the virtual server IP address that is the
same as the IP address of the virtual
server router on the switch
/cfg/vrrp/track/reals
Helps elect the switch with the largest server pool as
the master, increasing Layer 4 efficiency. This
parameter influences the VRRP router's priority in
virtual server routers only.
In networks where the Hot Standby
Router Protocol (HSRP) is used for
establishing router failover, the num-
ber of Layer 4 client-only ports that
receive HSRP advertisements
/cfg/vrrp/track/hsrp
Helps elect the switch closest to the master HSRP
router as the master, optimizing routing efficiency.
This parameter influences the VRRP router's prior-
ity in both virtual interface routers and virtual server
routers.
Table 11-3 VRRP Tracking Parameters
Parameter Description