Avaya P580 - Manual (Page 677)

Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1 -31
80-Series QoS
Displaying ACL Rules
Command
Use the show access-lists command to display the ACL rules in an
ACL.
The syntax of this command is:
Avaya>show access-lists []
For more information on this command, see Chapter 18, “Policy,” in
the Command Reference Guide for the Avaya P550R, P580, P880, and P882
Multiservice Switches, Version 5.3.1.
Ingress Policing
Policing makes it possible for you to limit the bandwidth for ingress
queues. You limit the bandwidth by specifying the guaranteed bit
rate for a port. If this bit rate is exceeded, the switch drops the excess
packets.
For example, if you set policing on an ingress queue to be 5 Mbps,
and traffic exceeds that 5 Mbps rate, all traffic that exceeds the
5Mbps is dropped.
Only 80-series modules that are licensed for routing support the
policing feature.
The policing algorithm includes a normal burst threshold. This
threshold sets the size of bursts that is guaranteed transfer.
The switch uses queue 7 to forward protocol packets (ARP, VRRP,
OSPF, and so on) to the supervisor module. Do not disable this
queue. If you disable it, all protocol packets and learned packets are
discarded before reaching the supervisor module. If you enable
policing on queue 7, be sure to allocate the queue enough
bandwidth for management packets and learned packets. Failure to
allocate enough bandwidth to the queue may result in poor
network performance.
For information about how to set up policing, see “ Setting Up
Policing” on page 32.
* Note: Avaya recommends that you do not set a port using
policing as the source port or mirror port for a port
mirror. When the switch limits the bandwidth of a port,
packets are subject to random drop. If packets from a