User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1 22-1
22 Monitoring and Configuring

the Forwarding Cache

Overview
Contents The information and procedures provided in this chapter pertain to layer 3
module configuration only:
■Configuring the Forwarding Ca che
■Monitoring the Forwarding Cache Statistics
■Displaying the Forwarding Cache
For more information about the CLI commands that are mentioned in this
chapter, see Command Reference Guide for the Avaya P580 and P882
Multiservice Switches, Software Version 6.1

10-Gigabit Module

and Forwarding

Cache

Because of the volume of traffic that the 10-Gi gabit modul e can pr ocess and
its internal architecture, the module can cause the number of entries in the
Layer 3 forwarding cache to reach the default maximum of 130,000 sooner
than other modules. Once the maximum is reached:
■The switch routes all new traffic flows by means of the slow path.
■The speed at which traffic is forwarded is decreased.
■The role of master virtual router may be transferred from one VRRP
router to another if VRRP is enabled.
■The following message is displayed in the CLI if debug mode is
enabled and in the event log if logging of CLI debug messages is
enabled:
Log entry <number> by event 2 at <date and
time> : Normal(0)
Description: OS Error -- FILE: p2_ipenv.c
LINE: 752 Value 0x2 : IP timer got skewed
(Use the logging protocol event cli debug command to enable
logging of CLI debug messages.)
This issue is most prevalent when the 10-Gigabit module as well as the rest
switch is processing a high volume of layer 3 traffic flows.