Cisco 2600 Routing Issue

[talenx]

Hello all,
I’m having an issue that I can quite figure out, the answer probably obvious but I’m not seeing it.

I have a Cisco 2600 series router ver 12.2

I’m trying to connect into a frame-relay successfully, I have establish a connection to the remote network and able to pass traffic with no problems other then I had to create a static route pointing any traffic for the 10.20.130.0 network to the remote serial.

in doing this I can communicate with the remote network if I remove the static route hoping rip would take over the connection is dropped. I assume this should be done through rip... I checked the IP routes and all of the frame cloud routes are learned but oddly no one within the local network can ping them. thought I can ping them via telnet into the local router.

Any ideas?

Thanks
Talenx

 

[baddos]

Is your frame relay point to point or point to multipoint?

 

[talenx]

thanks for your quick reply,
point to point.

 

[NetEng631]

Can you give us more details on your config.
*** Please do not use real IP address. ***
Can you show us the serial and RIP Configs on both routers.

Also baddos was thinking it was a split horizon problem. Try it anyway and see if it works

router rip
no ip split-horizon.

The posting was a little confusing, becuase you mention the other routers in the frame relay cloud.

Also see the site below

http://www.cisco.com/en/US/products...figuration_guide_chapter09186a00800ca569.html

 

[jimmyzz]

Are you running a 10.x.x.x range anywhere else in your network? Remember rip (version1) is a classfull routing protocol and does not support VLSM. Hence your 10.20.130 will be summarised to 10.0.0.0. The router may be confused about where to route 10.0.0.0 (ie. internally or via the FR)

Post your config and perhaps we can isolate the problem further.

JimmyZ

 

[talenx]

note the 10.1.1.2 router is an HA router that provides access to a another point-to point and internet on the same network.

Building configuration...

Current configuration : 1268 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname Router1
!
enable secret 5 $1$p4mm$XWWRnS11i4thvwx3.6XXx1
enable password 7 044B0A051C244D48061601
!
ip subnet-zero
!
!
!
!
!
!
interface FastEthernet0/0
ip address 10.1.1.254 255.255.0.0
duplex auto
speed auto
!
interface Serial0/0
bandwidth 512
ip address 10.1.227.9 255.255.0.0
encapsulation frame-relay IETF
no fair-queue
frame-relay lmi-type ansi
!
interface Serial0/0.35 point-to-point
bandwidth 512
ip address 10.1.33.2 255.255.0.0
no cdp enable
frame-relay interface-dlci 35 IETF
!
router ospf 1
log-adjacency-changes
network 10.1.33.0 0.0.0.255 area 0
network 10.1.227.0 0.0.0.255 area 0
!
router rip
passive-interface Serial0/0
passive-interface Serial0/0.35
network 172.20.0.0
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.1.1.2
ip route 10.1.120.32 255.255.255.255 10.1.1.2
ip route 10.1.130.0 255.255.255.0 10.1.33.1
ip route 10.1.130.6 255.255.255.255 10.1.1.2
ip route 10.1.130.209 255.255.255.255 10.1.1.2
ip http server
!
snmp-server community public RO
snmp-server enable traps tty
!
line con 0
line aux 0
line vty 0 4
password 7 0704704F655C0D4F1916
login
!
end


thanks
talenx

 

[talenx]

jimmyzz ,
good point, but we are running a class c network, I had changed the IP address for security proposes.
though I do wonder if it has anything to do with the version of rip i using. rip ver 1.


thanks
talenx

 

[vipergg]

Is there a reason why you are passive interfacing the S0 port ? The other end can't learn about routes from you if the interface is passive . Maybe I am missing something here .

 

[talenx]

oddly the router is learning the routes via rip but no one on the 10.1.1.0 network can ping anything outside of there network. though i can ping while telneted into the local router.

its almost as if the serial is not passing it to the serial

 

[jimmyzz]

So why are you using rip? Where is the 172.20.0.0 network on your Router1?

It may be better to not use rip on your serial interfaces, but rather use the simple static route. You can then redistribute this static route into your ospf network.
To redistribute the static into ospf :

router ospf 1
default-information originate always metric <> metric-type <>

Also you can clean up your static route table. You already have a default route going via 10.1.1.2, so you don't need the individual host routes to go via the same interface. Only add ip route statements for routes which need to go via a different interface.

JimmyZ

 

[talenx]

jimmyzz,
thanks for the quick reply,

I was using rip because we have Cisco and Nortel routers the network and I heard that ospf works well with Nortel and rip is favored with Cisco so I had place the router to redistribute the routes via ospf as well as rip

? if a setup static routes and set the rip redistribution will it show the opposing route on the remote router ?

 

[baddos]

axe rip completely... It's rarely used now, and if your other routers support ospf then make the full switch to that protocol.

Back to rip though... Basically your telling rip not to run on your serial interface (sub int). Also, your not even telling rip about the 10.1.0.0/16 network.

 

[talenx]

i remove rip and created a list of static routes. i am able to ping and traceroute to the remote routers though when running a traceroute it can't find it on the first run. and when it does the route uses the ospf route not the static route.

any thought?

note ospf is still in use, i can remove it from the interface if need be.

thanks
talenx

 

[baddos]

Post a &quot;show ip route&quot;

 

[Syty]

to add to baddos you have rip routing a network that isn't directly attached.

If you are trulying running RIP resdisto on the OSPF protocol, and OSFP redistro on the RIPv1 prot, then make the interfaces that are used by rip, passive to OSPF

router ospf xxx
passive-interface xxxxx

Looking for the interface numbers from your config above pointed out the 172.20 network and no interface attached to it.

make your frame Relay and all interfaces attached to it, OSPF area 0

Then each router's internal network can will be in it's own area,

Lose RIP. Even if you were running RIPv2, when you redistribute, OSPF would warn you, only Classful routes will be redistributed.......etc....

hope something in here helps..............

 

[talenx]

sorry the 172.20.0.0. line should of read as 10.1.1.0 ,
as for RIP , i would like to get rid of one of the protocols, RIP seems to be the consensus of everyone i have spoken thus far.

if I’m running the OSPF , do i have to set ALL of the remote network area up, even if a remote router that then majority of the frame DCLI are connected into has a set of OSPF areas setup with redistribute ospf 1 metric 2, or should I have a list of static routes are redistribute them via

---------------
router ospf 1
redistribute static metric 0
---------------

thanks
talenx

 

[baddos]

When you setup your router to run ospf, you will no longer need the static routes.... At least as long as your other routers, advertise those routes in ospf.