tion
PortTimes
Major parameters for the port:
• Hello—Hello timer.
• MaxAge—Max Age timer.
• FWDly—Forward delay timer.
• MsgAge—Message Age timer.
• Remain Hop—Remaining hops.
BPDU Sent Statistics on sent BPDUs.
BPDU Received Statistics on received BPDUs.
Protocol Status Whether MSTP is enabled.
Protocol Std. MSTP standard.
Version MSTP version.
CIST Bridge-Prio. Priority of the current device in the CIST.
MAC address MAC address of the current device.
Max age(s) Maximum age of a configuration BPDU.
Forward delay(s) Port state transition delay, in seconds.
Hello time(s) Configuration BPDU transmission interval, in seconds.
Max hops Maximum hops of the current MST region.
MSTP configuration example
Network requirements
As shown in Figure 183, configure MSTP as follows:
• All devices on the network are in the same MST region.
• Packets of VLAN 10, VLAN 20, VLAN 30, and VLAN 40 are forwarded along MSTI 1, MSTI 2,
MSTI 3, and MSTI 0, respectively.
• 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, and the root bridge of MSTI 3 is Switch C.
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