HP 1:10Gb Ethernet BL-c Switch for c-Class BladeSystem Application Guide

Port-based Network Access and traffic control
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• The 802.1x standard has optional provisions for supporting dynamic virtual LAN assignment via
RADIUS tunneling attributes, for example, Tunnel-Type (=VLAN), Tunnel-Medium-Type (=802), and
Tunnel-Private-Group-ID (=VLAN id). These attributes are not supported and might affect 802.1x
operations. Other unsupported attributes include Service-Type, Session-Timeout, and Termination-
Action.
RADIUS accounting service for 802.1x-authenticated devices or users is not supported.
Configuration changes performed using SNMP and the standard 802.1x MIB take effect immediately.
Port-based traffic control
Port-based traffic control prevents HP 1:10GbE switch ports from being disrupted by LAN storms. A LAN
storm occurs when data packets flood the LAN, which can cause the network to become congested and
slow down. Errors in the protocol-stack implementation or in the network configuration can cause a LAN
storm.
You can enable port-based traffic control separately for each of the following traffic types:
• Broadcast—packets with destination MAC address ff:ff:ff:ff:ff:ff
• Multicast—packets that have MAC addresses with the least significant bit of their first octet set to one
• Destination Lookup Failed (DLF)—packets with unknown destination MAC address, that are treated
like broadcast packets
With Port-based Traffic Control enabled, the port monitors incoming traffic of each type noted above. If
the traffic exceeds a configured threshold, the port blocks traffic that exceeds the threshold until the traffic
flow falls back within the threshold.
The HP 1:10GbE switch supports separate traffic-control thresholds for broadcast, multicast, and DLF
traffic. The traffic threshold is measured in number of frames per second.
NOTE: All ports that belong to a trunk must have the same traffic-control settings.
Configuring port-based traffic control
To configure a port for traffic control, perform the following steps:
1. Configure the traffic-control threshold and enable traffic control.
Main# /cfg/port 2
>> Port 2# brate 150000 (Set broadcast threshold)
>> Port 2# mrate 150000 (Set multicast threshold)
>> Port 2# drate 150000 (Set DLF threshold)
2. To disable a traffic-control threshold, use the following command:
>> Port 2# mrate dis (Disable multicast threshold)
3. Apply and save the configuration.
>> Port 2# apply (Apply the port configurations)
>> Port 2# save (Save the port configurations)