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Intervlan routing

By pradeep2jr ·
Hi everyone,

Plz have a look to the below configuration first:

switch1#sh mac-address-table
!
Version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname switch1
ip name-server 0.0.0.0
!
!
!
ip subnet-zero
!
!
!
!
!
!
spanning-tree extend system-id
!
interface FastEthernet0/1
switchport mode trunk
backup interface

Mac Address Table
------------------------------------------
Vlan Mac Address Type Ports
---- ----------- ---- -----
3 000C.5705.2214 DYNAMIC Fa0/4
3 000C.5401.8140 DYNAMIC Fa0/5
2 000C.4326.7045 DYNAMIC Fa0/3
2 000C.6516.6802 DYNAMIC Fa0/2
1 000C.3782.8690 DYNAMIC Fa0/1
1 000C.3782.8691 DYNAMIC Fa0/1

Total Mac Addresses for this criterion: 6
no fair-queue
!
interface FastEthernet0/2
switchport access vlan 2
backup interface
no fair-queue
!
interface FastEthernet0/3
switchport access vlan 2
backup interface
no fair-queue
!
interface FastEthernet0/4
switchport access vlan 3
backup interface
no fair-queue
!
interface FastEthernet0/5
switchport access vlan 3
backup interface
no fair-queue
!
interface FastEthernet0/6
backup interface
no fair-queue
!
interface FastEthernet0/7
backup interface
no fair-queue
!
interface FastEthernet0/8
backup interface
no fair-queue
!
interface FastEthernet0/9
backup interface
no fair-queue
!
interface FastEthernet0/10
backup interface
no fair-queue
!
interface FastEthernet0/11
backup interface
no fair-queue
!
interface FastEthernet0/12
backup interface
no fair-queue
!
vtp domain bigdomain
interface Vlan 1
no ip address
no ip route-cache
shutdown

vlan 2 name 2

vlan 3 name 3
!
ip classless
no ip http server
!
!
!
line con 0
transport input none
line aux 0
line vty 0 15
!
no scheduler allocate
end


I have configured intervlan routing by connecting switch 2950 to router by enabling subinterfaces on the router.I configured two vlans (2&3) in boson simulator as you can see in the above config.My question why iam getting two mac-addresses for vlan1.Also fa0/1 is a trunk in switch and it is connected to fa0/1 of router on which we enabled subinterfaces for intervlan routing.Thanks in advance for your reply.Awaiting for your swift response.

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