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Chapter 15
Configuring STP and IEEE 802.1s MST
Router# show spanning-tree mst
###### MST00
Bridge
Root
IST master
Operational hello time 2, forward delay 15, max age 20, max hops 20
Configured
Interface
---------------- ---- --- --------- -------- --------------------------------
Fa4/4
Fa4/5
Fa4/48
###### MST01
Bridge
Root
Interface
---------------- ---- --- --------- -------- --------------------------------
Fa4/4
Fa4/5
Fa4/48
Router# show spanning-tree mst 1
###### MST01
Bridge
Root
Interface
---------------- ---- --- --------- -------- --------------------------------
Fa4/4
Fa4/5
Fa4/48
Router# show spanning-tree mst interface fastEthernet 4/4
FastEthernet4/4 of MST00 is backup blocking
Edge port:no
Link type:point-to-point (auto)
Boundary :internal
Bpdus sent 2, received 368
Instance Role Sts Cost
-------- ---- --- --------- -------- -------------------------------
0
1
Router# show spanning-tree mst 1 interface fastEthernet 4/4
FastEthernet4/4 of MST01 is backup blocking
Edge port:no
Link type:point-to-point (auto)
Boundary :internal
Bpdus (MRecords) sent 2, received 364
Instance Role Sts Cost
-------- ---- --- --------- -------- -------------------------------
1
78-14099-04
vlans mapped:
address 00d0.00b8.1400
address 00d0.004a.3c1c
port
Fa4/48
this switch
hello time 2, forward delay 15, max age 20, max hops 20
Role Sts Cost
Back BLK 1000
Desg FWD 200000
Root FWD 200000
vlans mapped:
address 00d0.00b8.1400
this switch for MST01
Role Sts Cost
Back BLK 1000
Desg FWD 200000
Boun FWD 200000
vlans mapped:
address 00d0.00b8.1400
this switch for MST01
Role Sts Cost
Back BLK 1000
Desg FWD 200000
Boun FWD 200000
(default)
Prio.Nbr Vlans mapped
Back BLK 1000
160.196
Back BLK 1000
160.196
(default)
Prio.Nbr Vlans mapped
Back BLK 1000
160.196
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
11-4094
priority
32768 (32768 sysid 0)
priority
32768 (32768 sysid 0)
path cost 203100
Prio.Nbr Status
160.196
P2p
128.197
P2p
128.240
P2p Bound(STP)
1-10
priority
32769 (32768 sysid 1)
Prio.Nbr Status
160.196
P2p
128.197
P2p
128.240
P2p Bound(STP)
1-10
priority
32769 (32768 sysid 1)
Prio.Nbr Status
160.196
P2p
128.197
P2p
128.240
P2p Bound(STP)
port guard :none
bpdu filter:disable
bpdu guard :disable
11-4094
1-10
port guard :none
bpdu filter:disable
bpdu guard :disable
1-10
Configuring IEEE 802.1s MST
(default)
(default)
(default)
(default)
(default)
(default)
15-37

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