E-3
Monitoring Resources
Viewing Information on Resource Usage
■
QoS configurations
■
Management VLAN configuration
■
DHCP snooping
■
Dynamic ARP protection
■
Remote-mirroring endpoint configuration
Resource usage on the following features, which are configured per-port,
applies only to the slot or port group on which the feature is configured:
■
ACLs applied per-port through RADIUS authentication
■
ACLs applied per-port through the CLI using the
ip access-group
and
monitor ip
commands.
■
ICMP rate-limiting
■
Virus throttling applied to any port (when a high connection-rate client is
being throttled or blocked)
Displaying Current Resource Usage
To display current resource usage in the switch, enter the
show resources
command.
The
show resources
command output allows you to view and re-prioritize
current resource usage and, if necessary, reconfigure software features to free
resources reserved for less important features.
N o t e
A 1:1 mapping of internal rules to configured policies in the switch does not
necessarily exist. As a result, displaying current resource usage is the most
reliable method for keeping track of available resources. Also, because some
internal resources are used by multiple features, deleting a feature configura-
tion may not increase the amount of available resources.
Figure E1 shows the resource usage on a 3500yl switch configured for ACLs,
QoS, RADIUS-based authentication, ICMP, and other features. Note that the
switch is also configured for virus throttling and is either blocking or throttling
routed traffic with a high rate of connection requests.
Syntax:
show <qos | access-list> resources
Displays the resource usage of the Policy Enforcement Engine on the
switch by software feature. For each type of resource, the amount still
available and the amount used by each software feature is shown
.
The
qos
and
access-list
parameters display the same command output
.
3500-5400-6200-8200-MCG-Jan08-K_13_01.book Page 3 Monday, January 28, 2008 10:04 AM