Cisco CISCO1401 Software Guide - Page 110

Configuring STP Features Chapter 8 Configuring Spanning Tree Protocol Configuring STP Features You complete three major steps to configure STP on the bridge: 1. If necessary, assign interfaces and sub-interfaces to bridge groups 2. Enable STP for each bridge group 3. Set the STP priority for each bridge group These sections include spanning-tree configuration information: • Default STP Configuration, page 8-8 • Configuring STP Settings, page 8-8 • STP Configuration Examples, page 8-9 Default STP Configuration STP is disabled by default. Table 8-2 lists the default STP settings when you enable STP. Table 8-2 Default STP Values When STP is Enabled Setting Bridge priority Bridge max age Bridge hello time Bridge forward delay Ethernet port path cost Ethernet port priority Radio port path cost Radio port priority Default Value 32768 20 2 15 19 128 33 128 The radio and Ethernet interfaces and the native VLAN on the bridge are assigned to bridge group 1 by default. When you enable STP and assign a priority on bridge group 1, STP is enabled on the radio and Ethernet interfaces and on the primary VLAN, and those interfaces adopt the priority assigned to bridge group 1. You can create bridge groups for sub-interfaces and assign different STP settings to those bridge groups. Configuring STP Settings Beginning in privileged EXEC mode, follow these steps to configure STP on the bridge: Step 1 Step 2 Command configure terminal interface { dot11radio number | fastethernet number } Purpose Enter global configuration mode. Enter interface configuration mode for radio or Ethernet interfaces or sub-interfaces. Cisco Aironet 1400 Series Wireless Bridges Software Configuration Guide 8-8 OL-4059-01