-----------------------show run-------------------------------------------------



CISCO_3750G#show run
Building configuration...

Current configuration : 1516 bytes
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CISCO_3750G
!
boot-start-marker
boot-end-marker
!
enable password tnsrhks.1
!
no aaa new-model
switch 1 provision ws-c3750g-12s
system mtu routing 1500
ip subnet-zero

!
spanning-tree mode mst
spanning-tree extend system-id
!
spanning-tree mst configuration
 name A
 revision 1
 instance 1 vlan 10-20
 instance 2 vlan 30-40
!
spanning-tree mst 0 priority 0
!
vlan internal allocation policy ascending
!

interface GigabitEthernet1/0/1
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 10-20,30-40
 switchport mode trunk
 spanning-tree mst 0 cost 50
!
interface GigabitEthernet1/0/12
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 10-20,30-40
 switchport mode trunk
!
interface Vlan10
 ip address 192.168.10.94 255.255.255.0
!
ip classless
ip http server
!
!
!
control-plane
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line vty 0 4
 password tnsrhks.1
 login
line vty 5
 password tnsrhks.1
 login
line vty 6 15
 login
!
end









-----------------------show span mst-------------------------------------------------






CISCO_3750G#show spanning-tree mst

##### MST0    vlans mapped:   1-9,21-29,41-4094
Bridge        address 0021.a17a.c100  priority      0     (0 sysid 0)
Root          this switch for the CIST
Operational   hello time 2 , forward delay 15, max age 20, txholdcount 6
Configured    hello time 2 , forward delay 15, max age 20, max hops    20

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi1/0/1          Desg FWD 50        128.1    P2p
Gi1/0/5          Desg FWD 20000     128.5    P2p
Gi1/0/12         Desg FWD 20000     128.12   P2p

##### MST1    vlans mapped:   10-20
Bridge        address 0021.a17a.c100  priority      32769 (32768 sysid 1)
Root          this switch for MST1

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi1/0/1          Desg FWD 20000     128.1    P2p
Gi1/0/12         Desg FWD 20000     128.12   P2p

##### MST2    vlans mapped:   30-40
Bridge        address 0021.a17a.c100  priority      32770 (32768 sysid 2)
Root          this switch for MST2

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi1/0/1          Desg FWD 20000     128.1    P2p
Gi1/0/12         Desg FWD 20000     128.12   P2p

CISCO_3750G#