Displaying Pvst+ Support Information; Configuration Examples - Foundry Networks FESX Manual

Foundry Configuration Guide for the FESX, FSX, and FWSX
Syntax: [no] dual-mode [<vlan-id>]
The <vlan-id> specifies the port's Port Native VLAN. This is the VLAN on which the port will support untagged
frames. By default, the Port Native VLAN is the same as the default VLAN (which is VLAN 1 by default).
For more information about the dual-mode feature, see "Dual-Mode VLAN Ports" on page 11-56.

Displaying PVST+ Support Information

To display PVST+ information for ports on a Foundry device, enter the following command at any level of the CLI:
FastIron SuperX Router(config)# show span pvst-mode
PVST+ Enabled on:
Port Method
1/1 Set by configuration
1/2 Set by configuration
2/10 Set by auto-detect
3/12 Set by configuration
4/24 Set by auto-detect
Syntax: show span pvst-mode
This command displays the following information.
This Field...
Port
Method

Configuration Examples

The following examples show configuration examples for two common configurations:
• Untagged IEEE 802.1Q BPDUs on VLAN 1 and tagged PVST+ BPDUs on other VLANs
• Tagged IEEE 802.1Q BPDUs on VLAN 1 and untagged BPDUs on another VLAN
Tagged Port Using Default VLAN 1 as its Port Native VLAN
Figure 7.29 shows an example of a PVST+ configuration that uses VLAN 1 as the untagged default VLAN and
VLANs 2, 3, and 4 as tagged VLANs.
7 - 64
Table 7.9: CLI Display of PVST+ Information
Displays...
The Foundry port number.
Note: The command lists information only for the ports on which
PVST+ support is enabled.
The method by which PVST+ support was enabled on the port. The
method can be one of the following:
• Set by configuration – You enabled the support.
• Set by auto-detect – The support was enabled automatically
when the port received a PVST+ BPDU.
© Foundry Networks, Inc. December 2005