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Troubleshooting a VLAN Mobility Failure Troubleshooting Group Mobility
page 9-4 OmniSwitch Troubleshooting Guide September 2005
Precedence
Due to the variety of rules that can be configured there can be traffic that can match multiple rules, i.e. an
IP frame could match a network address rule as well as a protocol rule. For this reason, all rules are
arranged in a precedence. When a frame is received on a mobile port, switch software starts with rule one
in the rule precedence table and progresses down the list until there is a successful match between rule
criteria and frame contents. The higher the rule is in the list, the higher its level of precedence. To verify
which VLAN a frame is being classified into use the show mac-address-table CLI for the MAC address
in question as shown below:
-> show mac-address-table 00:b0:d0:75:f1:97
Legend: Mac Address: * = address not valid
Vlan Mac Address Type Protocol Operation Interface
------+-------------------+--------------+-----------+------------+-----------
255 00:b0:d0:75:f1:97 learned 10800 bridging 6/1
Total number of Valid MAC addresses above = 1
Please see the “Defining VLAN Rules” chapter in the appropriate OmniSwitch Network Configuration
Guide for a detailed list of all rules and their relative precedence. has important information about VLAN
Rule precedence.