Hi Everybody. Where to post this question? I guess I'm not all thet wrong in this forum.
First of all; Ive noticed that bridge-group on tunnel interfaces is a valid command, but is "not supported".
But since we would like to replace Bridging over ISDN (yes you read right.....) with a Bridging over Internet using tunneling, and are not allowed to change IP's on the two sites, we must try to solve the problem this way
I've have built up a LAB, to collect a bit experience with the new config.
And have come to the conclution that ARP request and answers on ARP request are not passed through the tunnel intetrface.
By defineing static ARP on the computers on each side of the tunnel, access over the bridged tunnel is working perfectly... but its not really the ream situation...
Does anyone experience on this "unsupported" area?
BTW: Here is the Router configs:
RouterA:
RouterA#SH RUN
Building configuration...
Current configuration : 745 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname RouterA
!
boot-start-marker
boot-end-marker
!
enable secret 5 %%%%%%%%%%%%%%%%
!
no aaa new-model
ip subnet-zero
ip cef
!
!
!
!
!
bridge irb
!
!
interface Tunnel1
no ip address
tunnel source FastEthernet0/0
tunnel destination 10.41.1.1
bridge-group 1
!
interface FastEthernet0/0
ip address 10.41.1.4 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.41.3.1 255.255.255.0
duplex auto
speed auto
bridge-group 1
!
ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 10.41.1.3
ip route 10.41.2.0 255.255.255.0 Tunnel1
!
!
bridge 1 protocol ieee
bridge 1 route ip
!
line con 0
line aux 0
line vty 0 4
password test
login
!
!
!
end
RouterA#
Router B:
RouterB#sh run
Building configuration...
Current configuration : 898 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname RouterB
!
boot-start-marker
boot-end-marker
!
enable secret 5 %%%%%%%%%%%%%%%%%%%%%
!
no aaa new-model
ip subnet-zero
!
!
ip cef
!
!
!
bridge irb
!
!
interface Tunnel1
no ip address
tunnel source Ethernet0/0
tunnel destination 10.41.1.4
bridge-group 1
!
interface Ethernet0/0
ip address 10.41.1.1 255.255.255.0
half-duplex
!
interface Ethernet0/1
ip address 10.41.2.1 255.255.255.0
half-duplex
bridge-group 1
!
no ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 10.41.1.3
ip route 10.41.3.0 255.255.255.0 Tunnel1
!
!
snmp-server community public RO
snmp-server enable traps tty
bridge 1 protocol ieee
bridge 1 route ip
!
line con 0
password test
line aux 0
password test
line vty 0 4
password test
login
!
!
!
end
RouterB#
To repeat the Prolem/Question:
How do i get ARP request and answers to travel through the GRE tunnel?
Best Regards
Jarle Steffensen
