3Com 9100 manual Configuring VLANs, On the Switch

76CHAPTER 4: VIRTUAL LANS (VLANS)

Configuring VLANs	This section describes the commands associated with setting up VLANs
on the Switch	on the switch. Configuring a VLAN involves the following steps:

1Create and name the VLAN.

2Assign 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.

3Assign a VLANid, if any ports in this VLAN will use a tag.

4Assign 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 19 describes the commands used to configure a VLAN.

Table 19 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.
config protocol <protocol_name>	Configures a protocol filter. Supported
[add delete] <protocol_type>	<protocol_type> values include:
<hex_value> {<protocol_type>	■	etype
<hex_value>} ...
	■	llc
	■	snap
	The variable <hex_value> is a hexadecimal
	number between 0 and FFFF that represents either
	the Ethernet protocol type (for EtherType), the
	DSAP/SSAP combination (for LLC), or the
	SNAP-encoded Ethernet protocol type (for SNAP).
config vlan <name> ipaddress	Assigns an IP address and an optional mask to the
<ipaddress> {<mask>}	VLAN.

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