Netgear XCM8806 Chassis User Manual - Page 566

NETGEAR 8800 User Manual MSTP Timers MSTP uses the same timers as STP and RSTP, respectively. For more information, see RSTP Timers on page 549. MSTP Hop Counts In an MSTP environment, the hop count has the same purpose as the maxage timer for 802.1D and 802.1w environments. The CIST hop count is used within and outside a region. The MSTI hop count is used only inside of the region. In addition, if the other end is an 802.1D or 802.1w bridge, the maxage timer is used for interoperability between the protocols. The BPDUs use hop counts to age out information and to notify neighbors of a topology change. To configure the hop count, use the following command: configure stpd max-hop-count By default, the hop count of a BPDU is 20 hops. The range is 6 to 40 hops. Configuring MSTP on the Switch To configure and enable MSTP: 1. Create the MSTP region using the following command: configure mstp region 2. Create and configure the CIST, which forms the CST, using the following commands: create stpd configure stpd mode mstp cist Note: You can configure the default STPD, S0 as the CIST.  No VLAN can be bound to the CIST and no ports can be added to the CIST. Therefore, the VLAN should be bound to the MSTI and the "show MSTI port" command will show the VLAN ports. The ports added to the MSTI are bound automatically to the CIST even though they are not added to it. 3. Enable the CIST using the following command: enable stpd {} 4. Create and configure MSTIs using the following commands: create stpd configure stpd mode mstp msti 5. Add VLANs to the MSTIs using one of the following commands: • Manually binding ports configure stpd add vlan ports [all | ] {[dot1d | emistp | pvst-plus]} 566 | Chapter 18. STP