Hi all,
Today I am going to share a very basic MSTP Lab,
Having 3 switches as shown in the topology attached, LSW1, LSW2 and LSW3,
PC1 and PC2 are located in VLAN 10 domain
PC3 and PC4 belongs to VLAN 20 domain
After all the required steps configured correctly here we can check the MSTP is working as intended
by binding MSTI 1 to VLAN10
and MSTI 2 to VLAN20
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Verification:
<LSW1>
<LSW1>disp stp bri
MSTID Port Role STP State Protection
0 Ethernet0/0/1 DESI FORWARDING NONE
0 Ethernet0/0/2 ROOT FORWARDING NONE
0 Ethernet0/0/3 DESI FORWARDING NONE
1 Ethernet0/0/1 DESI FORWARDING NONE
1 Ethernet0/0/2 DESI FORWARDING NONE
1 Ethernet0/0/3 DESI FORWARDING NONE
2 Ethernet0/0/1 ROOT FORWARDING NONE
2 Ethernet0/0/2 DESI FORWARDING NONE
<LSW1>
<LSW1>
<LSW2>
<LSW2>disp stp br
MSTID Port Role STP State Protection
0 Ethernet0/0/1 ALTE DISCARDING NONE
0 Ethernet0/0/2 ROOT FORWARDING NONE
0 Ethernet0/0/3 DESI FORWARDING NONE
1 Ethernet0/0/1 ROOT FORWARDING NONE
1 Ethernet0/0/2 DESI FORWARDING NONE
2 Ethernet0/0/1 DESI FORWARDING NONE
2 Ethernet0/0/2 DESI FORWARDING NONE
2 Ethernet0/0/3 DESI FORWARDING NONE
<LSW2>
<LSW2>
<LSW3>
<LSW3>disp stp br
MSTID Port Role STP State Protection
0 Ethernet0/0/1 DESI FORWARDING NONE
0 Ethernet0/0/2 DESI FORWARDING NONE
0 Ethernet0/0/3 DESI FORWARDING NONE
0 Ethernet0/0/4 DESI FORWARDING NONE
1 Ethernet0/0/1 ROOT FORWARDING NONE
1 Ethernet0/0/2 ALTE DISCARDING NONE
1 Ethernet0/0/4 DESI FORWARDING NONE
2 Ethernet0/0/1 ALTE DISCARDING NONE
2 Ethernet0/0/2 ROOT FORWARDING NONE
2 Ethernet0/0/3 DESI FORWARDING NONE
<LSW3>
