Brocade Network OS NETCONF Operations Guide v4.1.1 User Manual

Page 375

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Network OS NETCONF Operations Guide

343

53-1003231-02

Spanning tree configuration and management

Specifying bridge forward delay on a per-VLAN basis

Using PVST or Rapid PVST, you may specify the forward delay for a specific VLAN. If the VLAN
parameter is not provided, the priority value is applied globally for all per-VLAN instances. But for
the VLANs which have been configured explicitly, the per-VLAN configuration takes precedence over
the global configuration.

The VLAN ID value can be 1 through 3583. VLAN IDs 3584 through 4094 are internally-reserved
VLAN IDs.

The range is 4 through 30 seconds. The default is 15 seconds. The following relationship should be
kept:

2*(forward_delay - 1)>=max_age>=2*(hello_time + 1)

To specify the bridge forward delay for a specific VLAN, perform the following steps.

1. Issue the <edit-config> RPC to configure the <protocol> node in the

urn:brocade.com:mgmt:brocade-interface namespace.

2. Under the <protocol> node, include the <spanning-tree> node from the

urn:brocade.com:mgmt:brocade-xstp namespace.

3. Under the <spanning-tree> node, include the <pvst>, or <rpvst> node element.

4. Under the <pvst>, or <rpvst> node, include the <vlan> node element.

5. Under the <vlan> node, include the following leaf elements.

a. In the <id> element, specify the VLAN ID.

b. In the <forward-delay> leaf element, and specify the bridge forward delay.

<?xml version="1.0" encoding="UTF-8"?>

<edit-config>

</target>

<spanning-tree xmlns="urn:brocade.com:mgmt:brocade-xstp">

<rpvst>

<vlan>

<forward-delay>20</forward-delay>

</vlan>

</rpvst>

</spanning-tree>

</protocol>

</config>

</edit-config>

</rpc>

<rpc-reply message-id="2010" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">

<ok/>

</rpc-reply>

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