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Catalyst 2950 and Catalyst 2955 Switch Command Reference

OL-10102-02

Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands

vlan (VLAN configuration)

Table 2-37 shows the valid syntax options for different media types.

media {ethernet | fddi |

fd-net | tokenring | tr-net}

(Optional) Specify the VLAN media type. Table 2-37 lists the valid

syntax for each media type.

• ethernet is Ethernet media type (the default).

• fddi is FDDI media type.

• fd-net is FDDI network entity title (NET) media type.

• tokenring is Token Ring media type if the VTP v2 mode is

disabled, or TrCRF if the VTP v2 mode is enabled.

• tr-net is Token Ring network entity title (NET) media type if the

VTP v2 mode is disabled or TrBRF media type if the VTP v2 mode

is enabled.

mtu mtu-size (Optional) Specify the maximum transmission unit (MTU) (packet size

in bytes). The range is 1500 to 18190.

name vlan-name (Optional) Specify the VLAN name, an ASCII string from 1 to 32

characters that must be unique within the administrative domain.

parent parent-vlan-id (Optional) Specify the parent VLAN of an existing FDDI, Token Ring,

or TrCRF VLAN. This parameter identifies the TrBRF to which a

TrCRF belongs and is required when defining a TrCRF. The range is 0

to 1005.

ring ring-number (Optional) Specify the logical ring for an FDDI, Token Ring, or TrCRF

VLAN. The range is 1 to 4095.

said said-value (Optional) Enter the security association identifier (SAID) as

documented in IEEE 802.10. The range is 1 to 4294967294 that must

be unique within the administrative domain.

state {suspend | active} (Optional) Specify the VLAN state:

• If active, the VLAN is operational.

• If suspend, the VLAN is suspended. Suspended VLANs do not

pass packets.

ste ste-number (Optional) Specify the maximum number of spanning-tree explorer

(STE) hops. This keyword applies only to TrCRF VLANs. The range is

0 to 13.

stp type {ieee | ibm | auto} (Optional) Specify the spanning-tree type for FDDI-NET, Token

Ring-NET, or TrBRF VLAN.

• ieee for IEEE Ethernet STP running source-route transparent

(SRT) bridging.

• ibm for IBM STP running source-route bridging (SRB).

• auto for STP running a combination of source-route transparent

bridging (IEEE) and source-route bridging (IBM).

tb-vlan1 tb-vlan1-id

and tb-vlan2 tb-vlan2-id

(Optional) Specify the first and second VLAN to which this VLAN is

translationally bridged. Translational VLANs translate FDDI or Token

Ring to Ethernet, for example. The range is 0 to 1005. Zero is assumed

if no value is specified.

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