Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 457)

Brocade 6910 Ethernet Access Switch Configuration Guide 407
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Configuring IP Subnet VLANs
20
subnet-vlan (Global Configuration)
This command configures IP subnet VLAN assignments. Use the no form to remove an IP
subnet-to-VLAN assignment.
Syntax
subnet-vlan subnet ip-address mask vlan vlan-id [priority priority]
no subnet-vlan subnet {ip-address mask | all}
ip-address – The IP address that defines the subnet. Valid IP addresses consist of four
decimal numbers, 0 to 255, separated by periods.
mask – This mask identifies the host address bits of the IP subnet.
vlan-id – VLAN to which matching IP subnet traffic is forwarded. (Range: 1-4093)
priority – The priority assigned to untagged ingress traffic. (Range: 0-7, where 7 is the
highest priority)
Default Setting
Priority: 0
Command Mode
Global Configuration
Command Usage
• Each IP subnet can be mapped to only one VLAN ID. An IP subnet consists of an IP address and
a subnet mask. The specified VLAN need not be an existing VLAN.
• When an untagged frame is received by a port, the source IP address is checked against the IP
subnet-to-VLAN mapping table, and if an entry is found, the corresponding VLAN ID is assigned
to the frame. If no mapping is found, the PVID of the receiving port is assigned to the frame.
• The IP subnet cannot be a broadcast or multicast IP address.
• When MAC-based, IP subnet-based, and protocol-based VLANs are supported concurrently,
priority is applied in this sequence, and then port-based VLANs last.
• Use the subnet-vlan command under Global Configuration mode to create a IP subnet VLAN.
Then use the
subnet-vlan command under Interface Configuration mode to bind an interface
to an IP subnet VLAN.
Example
The following example assigns traffic for the subnet 192.168.12.192, mask 255.255.255.224, to
VLAN 4.
Console(config)#subnet-vlan subnet 192.168.12.192 255.255.255.224 vlan 4
priority 0
Console(config)#
subnet-vlan (Interface Configuration)
This command binds an interface to an IP subnet VLAN. Use the no form to remove an interface
from an IP subnet VLAN.