User guide

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VLAN
The BlackDiamond ships with one default VLAN that has the following properties:
• The VLAN name is default.
• It contains all the ports on a new or initialized system.
• The default VLAN is untagged on all ports. It has an internal VLANid of 1.
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This section describes the commands associated with setting up VLANs on the
BlackDiamond. Configuring a VLAN involves the following steps:
1 Create and name the VLAN.
2 Assign an IP address and mask (if applicable) to the VLAN, if needed.
Each IP address and mask assigned to a VLAN must represent a unique IP
subnet. You cannot configure the same IP subnet on different VLANs.
3 Assign a VLANid, if any ports in this VLAN will use a tag.
4 Assign one or more ports to the VLAN.
As you add each port to the VLAN, decide if the port will use an 802.1Q tag.
Table 4-2 describes the commands used to configure a VLAN.
Table 4-2:
VLAN Configuration Commands
Command Description
create vlan <name> Creates a named VLAN.
create protocol <protocol_name> Creates a user-defined protocol.
enable ignore-stp vlan <name> Enables a VLAN from using STP port
information. When enabled, all virtual ports
associated with the VLAN are in STP
forwarding mode. The default setting is
disabled.
config dot1p ethertype <ethertype> Configures an IEEE 802.1Q Ethertype. Use
this command only if you have another switch
that supports 802.1Q, but uses a different
Ethertype value than 8100.