Unable to ping gateway from bridge but can ping bridge from gateway

Unanswered Question
Apr 30th, 2008

We have a wireless bridge connected to a router.

The the router whose f/e address 192.168.255.130 which is also the gateway of the bridge

The Bridges IP is 192.168.255.132

I am unable to telnet or even trace to that bridge from the gateway/router.

When I try and trace to it, I get sent out into our providers network

However I CAN ping !

router #ping 192.168.255.132

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.255.132, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 8/9/12 ms

ROUTER5#sh ip route 192.168.255.132 <-----BRIDGE IP

Routing entry for 192.168.255.132/30

Known via "bgp 65112", distance 20, metric 4

Tag 3561, type external

Redistributing via ospf 711

Advertised by ospf 711 subnets

Last update from 192.168.255.10 20:52:10 ago

Routing Descriptor Blocks:

* 192.168.255.10, from 192.168.255.10, 20:52:10 ago

Route metric is 4, traffic share count is 1

AS Hops 1

Route tag 3561

failed trace below

ROUTER #trace 192.168.255.132

Type escape sequence to abort.

Tracing the route to 192.168.255.132

1 192.168.255.10 4 msec 0 msec 0 msec

2 10.0.0.29 8 msec 0 msec 4 msec

3 10.133.14.20 8 msec

10.133.14.34 4 msec

10.133.14.20 4 msec

4 10.0.0.66 4 msec

10.0.0.62 12 msec

10.0.0.66 4 msec

5 192.168.255.37 [AS 3441] 12 msec

192.168.255.65 [AS 3441] 8 msec

192.168.255.37 [AS 3441] 8 msec

6 216.86.135.199 [AS 3441] 8 msec * 4 msec

7 *

192.168.255.138 [AS 3441] 8 msec *

8 192.168.255.134 [AS 3441] 24 msec * 24 msec

9 * * *

10 * * *

11 * * *

Now from the bridge....I fail to ping the gateway

102wireless#ping 192.168.255.130

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.255.130, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

router#sh ip int br

FastEthernet1/1 192.168.255.130 YES NVRAM up up

bridge#sh ip int br

BVI1 192.168.255.132 YES NVRAM up up

Does this make any sense?

I have this problem too.
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lamav Wed, 04/30/2008 - 06:37

The bridge BVI and the f/e interface on your "router" are on the same subnet, right? Since you're calling the f/e the default gateway for the bridge, I imagine this is the case. A /24 mask maybe? Yes?

So what is "ROUTER5" and why do you get a /30 mask when you do a route lookup to the same address?

ROUTER5#sh ip route 192.168.255.132 <-----BRIDGE IP (Are you sure???)

Routing entry for 192.168.255.132/30

You need to look into this and/or give us more information to help you out.

HTH

Victor

nygenxny123 Wed, 04/30/2008 - 06:59

yes..they should be in the same subnet

Bridge#sh run interface BVI1

Building configuration...

Current configuration : 83 bytes

!

interface BVI1

ip address 192.168.255.132 255.255.255.0

no ip route-cache

end

Router#interface FastEthernet1/1

ip address 192.168.255.130 255.255.255.248

no ip route-cache

ip ospf cost 7

ip ospf hello-interval 5

ip ospf dead-interval 30

duplex auto

speed auto

no cdp enable

end

However,

I have no problem logging into the client

end of the Bridge...Bridge B so to speak

The subnet masks are different on that and its gateway too

ROUTER B#sh running-config interface fastEthernet 0/1

Building configuration...

Current configuration : 191 bytes

!

interface FastEthernet0/1

ip address 192.168.255.129 255.255.255.248

ip ospf cost 1851

ip ospf hello-interval 5

ip ospf dead-interval 30

load-interval 30

duplex auto

speed auto

end

BRIDGE B

BRIDGEB#interface BVI1

ip address 192.168.255.131 255.255.255.0

no ip route-cache

end

The masks for brige B and its gateway are different too.

And the only way i can telnet into bridge A

is to go through Bridge B (wireless)

I am pulling cdp from all devices

nygenxny123 Wed, 04/30/2008 - 07:36

here is what happens when i do a show ip route to the remote end bridge from the gatweay in question

router#sh ip route 192.168.255.131

Routing entry for 192.168.255.128/29

Known via "connected", distance 0, metric 0 (connected, via interface)

Redistributing via ospf 711, bgp 65xx2

Advertised by bgp 65xx2

Routing Descriptor Blocks:

* directly connected, via FastEthernet1/1

Route metric is 0, traffic share count is 1

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