Command Syntax; Configuring A Utilization List For An Uplink Port; Displaying Utilization Percentages For An Uplink - Foundry Networks FESX Manual

This command clears the values in the following fields of the show sflow display:
• UDP packets exported
• sFlow samples collected
NOTE: This command also clears the statistics counters used by other features.

Configuring a Utilization List for an Uplink Port

You can configure uplink utilization lists that display the percentage of a given uplink port's bandwidth that is used
by a specific list of downlink ports. The percentages are based on 30-second intervals of RMON packet statistics
for the ports. Both transmit and receive traffic is counted in each percentage.
NOTE: This feature is intended for ISP or collocation environments in which downlink ports are dedicated to
various customers' traffic and are isolated from one another. If traffic regularly passes between the downlink
ports, the information displayed by the utilization lists does not provide a clear depiction of traffic exchanged by the
downlink ports and the uplink port.
Each uplink utilization list consists of the following:
• Utilization list number (1, 2, 3, or 4)
• One or more uplink ports
• One or more downlink ports
Each list displays the uplink port and the percentage of that port's bandwidth that was utilized by the downlink
ports over the most recent 30-second interval.
You can configure up to four bandwidth utilization lists.

Command Syntax

To configure an uplink utilization list, enter commands such as the following. The commands in this example
configure a link utilization list with port 1/1 as the uplink port and ports 1/2 and 1/3 as the downlink ports.
FastIron SuperX Router(config)# relative-utilization 1 uplink eth 1/1 downlink eth
1/2 to 1/3
FastIron SuperX Router(config)# write memory
Syntax: [no] relative-utilization <num> uplink ethernet [<slotnum>/]<portnum> [to [<slotnum>/]<portnum> |
[<slotnum>/]<portnum>...]
downlink ethernet [<slotnum>/]<portnum> [to [<slotnum>/]<portnum> | [<slotnum>/]<portnum>...]
The <num> parameter specifies the list number. You can configure up to four lists. Specify a number from 1 – 4.
The uplink ethernet parameters and the port number(s) you specify after the parameters indicate the uplink
port(s).
The downlink ethernet parameters and the port number(s) you specify after the parameters indicate the downlink
port(s).

Displaying Utilization Percentages for an Uplink

After you configure an uplink utilization list, you can display the list to observe the percentage of the uplink's
bandwidth that each of the downlink ports used during the most recent 30-second port statistics interval. The
number of packets sent and received between the two ports is listed, as well as the ratio of each individual
downlink port's packets relative to the total number of packets on the uplink.
To display an uplink utilization list, enter a command such as the following at any level of the CLI:
FastIron SuperX Router(config)# show relative-utilization 1
December 2005 © Foundry Networks, Inc.
Remote Network Monitoring
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