3Com 2928 User Guide - Page 230

Field Num of Vlans Mapped PortTimes BPDU Sent BPDU Received Protocol Status Protocol Std. Version CIST Bridge-Prio. MAC address Max age(s) Forward delay(s) Hello time(s) Max hops Description Number of VLANs mapped to the current MSTI Major parameters for the port: z Hello: Hello timer z MaxAge: Max Age timer z FWDly: Forward delay timer z MsgAge: Message Age timer z Remain Hop: Remaining hops Statistics on sent BPDUs Statistics on received BPDUs Whether MSTP is enabled MSTP standard MSTP version Priority of the current device in the CIST MAC address of the current device Maximum age of a configuration BPDU Port state transition delay, in seconds Configuration BPDU transmission interval, in seconds Maximum hops of the current MST region Return to MSTP configuration task list. MSTP Configuration Example Network requirements Configure MSTP in the network shown in Figure 1-11 to enable packets of different VLANs to be forwarded along different MSTIs. The detailed configurations are as follows: z All devices on the network are in the same MST region. z Packets of VLAN 10, VLAN 20, VLAN 30, and VLAN 40 are forwarded along MSTI 1, MSTI 2, MSTI 3, and MSTI 0 respectively. z Switch A and Switch B operate at the distribution layer; Switch C and Switch D operate at the access layer. VLAN 10 and VLAN 20 are terminated on the distribution layer devices, and VLAN 30 is terminated on the access layer devices, so the root bridges of MSTI 1 and MSTI 2 are Switch A and Switch B respectively, while the root bridge of MSTI 3 is Switch C. 1-23