03-11-2008 05:32 PM - edited 03-05-2019 09:41 PM
I have 3 routers connected to a switch, see diagram attached.
R1 is set as the default gateway for R2 and R3, R2 and R3 has the same static routing configuration âip route 0.0.0.0 0.0.0.0 next hop on R1â. R3 can now ping R1 interface connected to the switch, but R2 can't ping R1.
R2 can ping the switch, vice versa. And the switch can ping R1, vice versa. I was wondering if there's problem with the switch, as I can't find any problems. These are very simple configurations which I have done a few times successfully in the past. Thanks.
03-11-2008 06:19 PM
If R3 can PING R1, that means they both have routes to each other. Good.
If R3 cannot PING R2, and R2 has the static route configured (the same that R1 has), then I would first have to ask if R1 has a route to R2. Does it?
But we really do need more information to give you the right answer.
Why dont you post the configs of each switch's IP interfaces and routing tables so we can see whats going on?
HTH
Victor
03-12-2008 08:25 PM
Thanks Victor. here're more details, see a detailed diagram attached
Switch:
interface FastEthernet0/2
description To R2
duplex half
speed 10
switchport access vlan 13
!
interface FastEthernet0/3
description To R3
duplex half
speed 10
switchport access vlan 13
interface FastEthernet0/1
description To R1
duplex half
speed 10
switchport access vlan 13
!
Show cdp neighbour
R2 Fas 0/2 128 AS2511-RJ Fas 0/0
R3 Fas 0/3 149 AS2511-RJ Eth 0
R1 Fas 0/1 156 AS2511-RJ Eth 0
R2:
interface FastEthernet0/0
description To switch
ip address 172.26.65.2 255.255.255.192
no ip route-cache
no ip mroute-cache
speed 10
half-duplex
!
ip default-gateway 172.26.65.62
ip classless
no ip routing
R2#sh ip route
Default gateway is 172.26.65.62
Host Gateway Last Use Total Uses Interface
ICMP redirect cache is empty
R3:
R3 has exactly the same configuration as R2, except the E0 interface has different ip address as 172.26.65.3 255.255.255.192
R3 can ping R1 , but R2 can't ping R1. Why?
03-12-2008 08:26 PM
is it possible that the cable between R2 and switch is having problem? I'm using a straight through cable here.
03-12-2008 08:30 PM
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