Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 459)

Brocade 6910 Ethernet Access Switch Configuration Guide 409
53-1002581-01
Configuring MAC Based VLANs
20
Eth 1/2 192.168.12.128 255.255.255.192
Eth 1/3 192.168.12.192 255.255.255.224
Eth 1/4 192.168.12.224 255.255.255.240
Eth 1/5 192.168.12.240 255.255.255.248
Eth 1/6 192.168.12.248 255.255.255.252
Eth 1/7 192.168.12.252 255.255.255.254
Eth 1/8 192.168.12.254 255.255.255.255
Eth 1/9 192.168.12.255 255.255.255.255
Console#
show subnet-vlan
This command displays IP Subnet VLAN assignments.
Command Mode
Privileged Exec
Command Usage
• Use this command to display subnet-to-VLAN mappings.
• The last matched entry is used if more than one entry can be matched.
Example
The following example displays all configured IP subnet-based VLANs.
Console#show subnet-vlan
IP Address Mask VLAN ID Priority
--------------- --------------- ------- --------
192.168.12.0 255.255.255.128 1 0
192.168.12.128 255.255.255.192 3 0
192.168.12.192 255.255.255.224 4 0
192.168.12.224 255.255.255.240 5 0
192.168.12.240 255.255.255.248 6 0
192.168.12.248 255.255.255.252 7 0
192.168.12.252 255.255.255.254 8 0
192.168.12.254 255.255.255.255 9 0
192.168.12.255 255.255.255.255 10 0
Console#
Configuring MAC Based VLANs
When using IEEE 802.1Q port-based VLAN classification, all untagged frames received by a port
are classified as belonging to the VLAN whose VID (PVID) is associated with that port.
When MAC-based VLAN classification is enabled, the source address of untagged ingress frames
are checked against the MAC address-to-VLAN mapping table. If an entry is found for that address,
these frames are assigned to the VLAN indicated in the entry. If no MAC address is matched, the
untagged frames are classified as belonging to the receiving port’s VLAN ID (PVID).