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PowerConnect B-Series FCX Configuration Guide 27
53-1002266-01
Configuring basic system parameters
2
Syntax: [no] clock timezone us <timezone-type>
Enter pacific, eastern, central, or mountain for <timezone-type>.
This command must be configured on every device that follows the US DST.
To verify the change, run a show clock command.
PowerConnect # show clock
Refer to October 19, 2006 - Daylight Saving Time 2007 Advisory, posted on kp.foundrynet.com for
more information
Limiting broadcast, multicast, and unknown unicast traffic
Dell PowerConnect devices can forward all flooded traffic at wire speed within a VLAN. However,
some third-party networking devices cannot handle high rates of broadcast, multicast, or
unknown-unicast traffic. If high rates of traffic are being received by the Dell PowerConnect device
on a given port of that VLAN, you can limit the number of broadcast, multicast, or unknown-unicast
packets or bytes received each second on that port. This can help to control the number of such
packets or bytes that are flooded on the VLAN to other devices.
Configuration notes and feature limitationss:
• PowerConnect B-Series FCX devices
- To enable unknown-unicast limiting or multicast limiting, enable it after enabling
broadcast limiting. Unknown-unicast limiting and multicast limiting use the limit defined in
broadcast limiting. You cannot set a separate limit for unknown-unicast limiting and
multicast limiting.
- PowerConnect B-Series FCX devices support packet-based limiting only.
Command syntax for packet-based limiting on PowerConnect B-Series FCX
devices
To enable broadcast limiting on a group of ports by counting the number of packets received, enter
commands such as the following.
PowerConnect(config)# interface ethernet 1/1/1 to 1/1/8
PowerConnect(config-mif-e1000-1/1/1-1/1/8)# broadcast limit 65536
To include unknown unicast limiting by counting the number of packets received, enter commands
such as the following.
PowerConnect(config-mif-e1000-1/1/1-1/1/8)# unknown-unicast limit
To include multicasts limiting, enter the following command after enabling broadcast limiting.
PowerConnect(config-mif-e1000-1-8)# multicast limit
Syntax: [no] broadcast limit <num>
Syntax: [no] multicast limit
Syntax: [no] unknown-unicast limit