Managing The Vlan Tag Table - Brocade Communications Systems 8 Administrator's Manual

Managing the VLAN tag table

The VLAN tag table is used by ingress processing to filter inbound VLAN tagged frames per IP
interface. The table is used to determine how to tag a frame that is not already tagged. If a VLAN
tagged frame is received from the network and there is no entry in the VLAN tag table for the VLAN
ID, the frame is discarded. The per IP interface VLAN configuration is for non-data path traffic only,
such as ICMP, ping commands, etc. If Class-F traffic or data path traffic needs to be tagged, it must
be done through the -v, - -vlan-tagging option on the fcipcircuit create or modify command.
To tag frames destined for a specific host address, you must create an entry with an exact
matching destination address in the table. Only frames destined for that address are tagged with
the associated VLAN ID. To tag frames destined for a specific network, you must create a
destination address entry for the network. For example; if a destination address of 192.168.100.0
is specified, then all frames destined for the 192.168.100.0 network are tagged with the
associated VLAN ID, assuming a network mask of 255.255.255.0. If frames are already VLAN
tagged, those tags take precedence over entries in this table.
NOTE
If you do not specify a destination IP address, the destination address defaults to 0.0.0.0, and all
frames are tagged with the associated VLAN tag.
1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the portCfg vlantag command to add or delete entries in the VLAN tag table. The syntax
Fabric OS FCIP Administrator's Guide
53-1001766-01
Keepalive Timeout: 10000
Path MTU Disc: 0
VLAN ID: 300
L2CoS: F: 7 H:
DSCP: F: 32 H: 16 M:
Flags: 0x00000000
-------------------------------------------
Circuit ID: 16.1
Circuit Num: 1
Admin Status: Enabled
Oper Status: In Progress
Remote IP: 192.168.2.21
Local IP: 192.168.2.11
Metric: 0
Min Comm Rt: 100000
Max Comm Rt: 100000
SACK: On
Min Retrans Time: 100
Max Retransmits: 8
Keepalive Timeout: 10000
Path MTU Disc: 0
VLAN ID: 200
L2CoS: F: 0 H:
DSCP: F: 0 H:
Flags: 0x00000000
switch:admin>
for the portCfg vlantag command is as follows:
portCfg vlantag add|delete ipif_addr vlan_id L2CoS [dst_IP_addr]
Where:
5 M: 3 L: 1
8 L: 4
0 M: 0 L: 0
0 M: 0 L: 0
QOS, DSCP, and VLANs
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