Administrator Guide

31 Dell Campus Networking Interoperability with Cisco Catalyst 1.1 | version 1.1
Path Cost 0
Root Port
Bridge ID
Priority 4096
Address 001E.C9DE.D11A
Hello Time 2 Sec Max Age 20 sec Forward Delay 15
Name State Prio.Nbr Cost Sts Role RestrictedPort
--------- -------- --------- --------- ---- ----- --------------
Po5 Enabled 96.654 2000 FWD Desg No
Po8 Enabled 96.657 1000 FWD Desg No
N3024-1#show spanning-tree instance 2 | exclude DIS
Spanning Tree: Enabled BPDU Flooding: Disabled Portfast BPDU Filtering:
Disabled
Spanning tree Enabled mode mst
CST Regional Root: 10:00:68:EF:BD:EA:B1:80
Regional Root Path Cost: 2000
###### MST 2 Vlan Mapped: 33-35
ROOT ID
Priority 4096
Address 001E.C9DE.D142
Path Cost 1000
Root Port Po8
Bridge ID
Priority 16384
Address 001E.C9DE.D11A
Hello Time 2 Sec Max Age 20 sec Forward Delay 15 sec
Name State Prio.Nbr Cost Sts Role RestrictedPort
--------- -------- --------- --------- ---- ----- --------------
Po5 Enabled 96.654 2000 FWD Desg No
Po8 Enabled 96.657 1000 FWD Root No
Now the matching commands are ran on the second N3024 being sure to swap priority values. MST instance
1 has a priority of 16384 while MST instance 2 has a priority value set to 4096. In the following configuration,
the spanning tree show commands are ran on the second N3024 to show that the switch is the root bridge for
VLANs associated with MST instance 2.
N3024-2#show spanning-tree instance 1 | exclude DIS
Spanning tree Enabled mode mst
CST Regional Root: 10:00:68:EF:BD:EA:B1:80
Regional Root Path Cost: 2000
###### MST 1 Vlan Mapped: 30-32
ROOT ID
Priority 4096