Hi,
I configured two 1710 routers for transparent bridging in a trunk (802.1q) link. The routers are connected with a tunnel, which also part of the bridge. For packets below 1468 bytes a ping between both end points works fine. A ping with bytes larger as 1468 bytes doesn’t work. I have changed the ip MTU on the tunnel interfaces from 1500 to 1532, but that didn’t work, I even made the ip mtu smaller but that didn’t also work, who can give me advise. I have changed the DF bit but that didn’t have any result.
What I’m I doing wrong? who can give me some tips?
Regards,
Michiel
SWITCH
| (802.1q trunk)
|
| (bridge interface)
ROUTER
: (bridge interface)
:
: (bridge interface)
ROUTER
| (bridge interface)
|
| (802.1q trunk)
SWITCH
---------------------------------------------
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router1
!
logging queue-limit 100
!
memory-size iomem 25
ip subnet-zero
!
!
no ip domain lookup
!
ip audit notify log
ip audit po max-events 100
!
interface Loopback0
no ip address
no ip mroute-cache
!
interface Tunnel0
no ip address
tunnel source FastEthernet0
tunnel destination 192.168.1.248
bridge-group 1
!
interface Ethernet0
no ip address
no ip mroute-cache
half-duplex
bridge-group 1
!
interface FastEthernet0
ip address 192.168.0.248 255.255.255.0
no ip mroute-cache
speed auto
!
ip classless
ip route 192.168.1.0 255.255.255.0 192.168.0.253
no ip http server
no ip http secure-server
!
bridge 1 protocol ieee
!
line con 0
line aux 0
line vty 0 4
exec-timeout 15 0
password cisco
login
!
end
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router2
!
logging queue-limit 100
enable secret xxxxxx
!
memory-size iomem 25
ip subnet-zero
no ip routing
!
!
no ip domain lookup
!
ip audit notify log
ip audit po max-events 100
!
interface Loopback0
no ip address
no ip route-cache
no ip mroute-cache
!
interface Tunnel0
no ip address
ip access-group 101 out
tunnel source FastEthernet0
tunnel destination 192.168.0.248
bridge-group 1
!
interface Ethernet0
no ip address
no ip route-cache
no ip mroute-cache
half-duplex
bridge-group 1
!
interface FastEthernet0
ip address 192.168.1.248 255.255.255.0
no ip route-cache
no ip mroute-cache
speed auto
!
ip classless
ip route 192.168.0.0 255.255.255.0 192.168.1.253
no ip http server
no ip http secure-server
!
bridge 1 protocol ieee
!
line con 0
line aux 0
line vty 0 4
exec-timeout 15 0
password xxx
login
!
end
