Vlan Configuration Guidelines; Default Vlan Configuration - Cisco WS-C2955T-12 Software Manual

Chapter 8 Configuring VLANs

VLAN Configuration Guidelines

Follow these guidelines when creating and modifying VLANs in your network:
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Default VLAN Configuration

Table 8-6
Note Catalyst 2900 XL and Catalyst 3500 XL switches support Ethernet interfaces exclusively. Because
FDDI and Token Ring VLANs are not locally supported, you configure FDDI and Token Ring
media-specific characteristics only for VTP global advertisements to other switches.
Table 8-6
Parameter
VLAN ID
VLAN name
802.10 SAID
MTU size
Translational bridge 1
Translational bridge 2
VLAN state
Table 8-7
Parameter
VLAN ID
VLAN name
802.10 SAID
MTU size
Ring number
Parent VLAN
Translational bridge 1
78-6511-08
A maximum of 250 VLANs can be active on supported switches, but some models only support 64
VLANs. If VTP reports that there are 254 active VLANs, 4 of the active VLANs (1002 to 1005) are
reserved for Token Ring and FDDI.
Before you can create a VLAN, the switch must be in VTP server mode or VTP transparent mode.
For information on configuring VTP, see the
Switches running this release do not support Token Ring or FDDI media. The switch does not
forward FDDI, FDDI-Net, TRCRF, or TRBRF traffic, but it does propagate the VLAN configuration
through VTP.
through Table 8-10 shows the default configuration for the different VLAN media types.
Ethernet VLAN Defaults and Ranges
FDDI VLAN Defaults and Ranges
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
"Configuring VTP" section on page
Default
1
VLANxxxx, where xxxx is the VLAN ID
100000+VLAN ID
1500
0
0
active
Default
1002
VLANxxxx, where xxxx is the VLAN ID
100000+VLAN ID
1500
None
0
0
VLANs in the VTP Database
8-16.
Range
1–1005
No range
1–4294967294
1500–18190
0–1005
0–1005
active, suspend
Range
1–1005
No range
1–4294967294
1500–18190
1–4095
0–1005
0–1005
8-21