User guide

September 2009
OmniSwitch 6400/6850/6855/9000/9000E------ Release 6.4.2.R01 Page 43 of 79
00-80-9F-54-xx-xx to 00-80-9F-64-xx-xx
00-80-9F-66-xx-xx to 00-80-9F-6F-xx-xx.
Third-party devices can be added to this group as well.
Note: When automatic NMS prioritization is enabled, QoS policies that specify priority are not
applied to the NMS traffic. Other QoS policies, however, are applied to this type of traffic as usual.
BPDU Shutdown Ports
The BPDUShutdownPorts group is a special QoS port group that identifies its members as ports that
should not receive BPDUs. If a BPDU is received on one of these ports, the port is administratively
disabled.
Note that the BPDUShutdownPorts group is not supported on the OmniSwitch 6850 Series or the
OmniSwitch 9000/9000E Series. On these switches, it is possible to configure a global UserPorts
profile, as described in “ACL & Layer 3 Security”, to monitor BPDU on user ports. Such a profile also
determines whether user ports will filter BPDU or will administratively shutdown when BPDU are
received on the port. Note that this functionality only applies to ports that are designated as members of
the UserPorts port group.
A port configured to administratively shutdown when BPDU are detected will generate an inferior
BPDU every 5 seconds. This will prevent loops in the network if two BPDU shutdown ports are
accidentally bridged together either through an external loop or through a hub, since both ports would
be receiving inferior BPDUs.
Policy-Based Mirroring
This feature enhances the current port mirroring functionality on the OmniSwitch. It allows policies to
be configured to determine when traffic should be mirrored based on policies rather than being
restricted to a specified port. The following policies can be configured:
• Traffic between 2 ports
• Traffic from a source address
• Traffic to a destination address
• Traffic to/from an address
• Traffic between 2 addresses
• Traffic with a classification criterion based on packet contents other than addresses (for
example , based on protocol, priority).
• VLAN-based mirroring - mirroring of packets entering a VLAN.
Policy-Based Mirroring limitations:
• The policy mirror action must specify the same analyzer port for all policies in which the
action is used.
• One policy-based mirroring session supported per switch.
• One port-based mirroring session supported per switch. Note that policy-based and port-base
mirroring are both allowed on the same port at the same time.
• One remote port-based mirroring session supported per switch.
• One port-monitoring session supported per switch.