Cisco Routing problem between 2 sites

[ttcsbarry]

Help !!

Hello, I am a phone guy that is trying to learn routers and switches. We have an voice system that uses an I/P backbone to route voice traffic an management traffic. Our voice network is xxx.xxx.0.0 and our management network is yyy.yyy.30.0. Also the Corporate network (which is where we manage devices from) is yyy.yyy.0.0. The corporation gave us the whole yyy.yyy.30.0 to use. They have subnetted that so that yyy.yyy.30.1 through yyy.yyy.30.189 is the COB Site and yyy.yyy.30.192 through yyy.yyy.30.254 is the Romeo site. We have devices at both sites that need to talk to each other fo management purposes such as TFTP uploads/downloads, and device registration to the main server, etc. The 2 sites are connected together via Cisco routers with (2) T1's. The router at the COB site can ping devices at the COB site, the Corporate network and the Romeo site. However, the router at the Romeo site can not ping addresses at the COB site, but can only ping devices at the Romeo site. I have asked for help from the Corporate IT guys and they did put static routes in for yyy.yyy.0.0/16 at both routers but it does not seem to work. Does anyone have any ideas. Here are the configs:

COB-Voice#sh run
Building configuration...

Current configuration : 1433 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname COB-Voice
!
boot-start-marker
boot-end-marker
!
no logging buffered
enable secret 5 $1$59EF$GhVO/fQHw9V19XBUm6biX.
enable password XXXXXXXXX
!
no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip cef
!
!
!
!
username Cisco password 0 XXXXXXX
!
!
controller T1 0/0/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 0/0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
!
interface Multilink1
description COB to Remote
ip address xxx.xxx.2.1 255.255.255.0
ppp multilink
ppp multilink group 1
!
interface FastEthernet0/0
ip address xxx.xxx.1.27 255.255.255.0
speed 100
full-duplex
!
interface FastEthernet0/1
ip address yyy.yyy.30.185 255.255.255.192
speed 100
full-duplex
!
interface Serial0/0/0:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/0/1:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
!
router rip
version 2
network xxx.xxx.0.0
no auto-summary
!
ip route yyy.yyy.0.0 255.255.0.0 yyy.yyy.30.190
ip route yyy.yyy.30.192 255.255.255.192 xxx.xxx.2.2
!
ip http server
!
disable-eadi
!
control-plane
!
!
line con 0
password xxxxxxx
login
line aux 0
password xxxxxxx
login
line vty 0 4
password xxxxxxx
login
!
end

COB-Voice#

COB-Voice#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

yyy.yyy.0.0/16 is variably subnetted, 3 subnets, 2 masks
S yyy.yyy.0.0/16 [1/0] via yyy.yyy.30.190
C yyy.yyy.30.128/26 is directly connected, FastEthernet0/1
S yyy.yyy.30.192/26 [1/0] via xxx.xxx.2.2
xxx.xxx.0.0/16 is variably subnetted, 4 subnets, 2 masks
C xxx.xxx.1.0/24 is directly connected, FastEthernet0/0
C xxx.xxx.2.2/32 is directly connected, Multilink1
R xxx.xxx.3.0/24 [120/1] via xxx.xxx.2.2, 00:00:23, Multilink1
C xxx.xxx.2.0/24 is directly connected, Multilink1
COB-Voice#


Here is the Romeo site:

Romeoville-Voice#sh run
Building configuration...

Current configuration : 1336 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Romeoville-Voice
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$M3OY$c7rahxmuoz8JJ2ui35tlq/
enable password xxxxxxx
!
no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip cef
!
!
!
!
!
!
controller T1 0/0/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 0/0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
!
interface Multilink1
description Remeoville to COB
ip address xxx.xxx.2.2 255.255.255.0
ppp multilink
ppp multilink group 1
!
interface FastEthernet0/0
ip address xxx.xxx.3.1 255.255.255.0
speed 100
full-duplex
!
interface FastEthernet0/1
ip address yyy.yyy.30.254 255.255.255.192
speed 100
full-duplex
!
interface Serial0/0/0:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/0/1:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
!
router rip
version 2
network xxx.xxx.0.0
no auto-summary
!
ip route yyy.yyy.0.0 255.255.0.0 xxx.xxx.2.1
!
ip http server
!
disable-eadi
!
control-plane
!
!
line con 0
password xxxxxxx
login
line aux 0
password xxxxxxx
login
line vty 0 4
password xxxxxxx
login
!
end

Romeoville-Voice#
Romeoville-Voice#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

yyy.yyy.0.0/16 is variably subnetted, 2 subnets, 2 masks
S yyy.yyy.0.0/16 [1/0] via xxx.xxx.2.1
C yyy.yyy.30.192/26 is directly connected, FastEthernet0/1
xxx.xxx.0.0/16 is variably subnetted, 4 subnets, 2 masks
R xxx.xxx.1.0/24 [120/1] via xxx.xxx.2.1, 00:00:23, Multilink1
C xxx.xxx.3.0/24 is directly connected, FastEthernet0/0
C xxx.xxx.2.1/32 is directly connected, Multilink1
C xxx.xxx.2.0/24 is directly connected, Multilink1
Romeoville-Voice#

Any help would be appreciated. Thank you.

 

[vipergg]

I think the static on the Romeo is incorrect , think it should be ip route yyy.yyy.30.128 255.255.255.192 xxx.xxx.2.1 . Because that space is variably subnetted you have to have a more specific route pointing back the other way otherwise it doesn't know what to do with it .

 

[vipergg]

PS the way they have it subnetted the address range at the cob site is yyy.yyy.30.129 - 190 not 1-192 , they have the mask on the .64 boundary , so the subnets would be 0 , 64,128 ,192 . So at the cob site don't address anything the .65 it would not work in that subnet scheme . Also make sure your mask on the attached devices are correct .

 

[castlesmadeofsand]

Couldn't he advertise the serial line subnet in RIP?

Tim

 

[vipergg]

Sorry the above statement should read do not address any device at the cob site below .129 at least the way they have it subnetted .

 

[vipergg]

You could also ask the IT guys why they didn't just add your address ranges to the RIP network statements ,maybe they have a reason I don't know , this would also get rid of all the static routes . They also may have to turn off auto summarization in rip .

 

[ttcsbarry]

Thank you vipergg for your feedback. To answer your question about RIP, The corporate IT guys turned RIP off because it causes problems on their network. I'm not sure why, I did not get into that with them. As far as your statement regarding the COB site, my knowledge on subnetting is very limited, but you mest be right because our devices start at .129 and go up to .190. That would explain a direct route statement on one of our layer 3 switches on that network that says:

Ori Destination Gateway Mtr Flags
*d yyy.yy.30.128/26 yyy.yyy.30.137 1 U------u---

where yyy.yyy.30.137 is the layer 3 switch address. I'm understanding that to mean to reach the yyy.yyy.30.128/26 network, use gateway (or switch/router) yyy.yyy.30.137.

And I'm understanding that to reach the yyy.yyy.30.192/26 network, use gateway yyy.yyy.30.185 (which is the COB Router towards Romeo). So it seems to make sense what you are saying to go to the Romeo Router and add a static route as ip route yyy.yyy.30.128 255.255.255.192 xxx.xxx.2.1

Since I can telnet to that router and I have the passwords to do that I will give it a try. I am assuming that I log in and type enable and then type config terminal and then type:

ip route ip route yyy.yyy.30.128 255.255.255.192 xxx.xxx.2.1
end
- correct?

And to undo that I would type:
no ip route yyy.yyy.30.128 255.255.255.192 xxx.xxx.2.1
end
- correct?

 

[vipergg]

That is correct as far as the static route . Not sure where I see they turned rip off , looks like rip is still running because it is learning a rip route , the easiest to fix for all this would have been just to add a network statement for your network on both routers under rip and turn off summarization but statics will work too ...

 

[vipergg]

One other thing I forgot to mention is you should pull the current static that they have put in too if the new static works or if the new one doesn't work try pulling the one they put in , same thing as before just put it back in if for some reason you need it .

 

[ttcsbarry]

vipergg,

This is really weird. I put that static route in and it does not change things. I can only ping yyy.yyy.30.185 (which is the router at the COB Side)and the addresses at the Romeo site .193-254. So I took out that static route. The weird part is if I telnet to the layer 3 switch at the Romeo siye (yyy.yyy.30.193) it seems that I can ping yyy.yyy.30.129 thru 254. If I go back to the Romeo Router (yyy.yyy.30.254) I can only ping yyy.yyy.30.185 and the Romeo Site .193-254. I'm not sure if I could ping everything from the layer 3 switch before. What I don't understand is why can I ping addresses in both subnets from the layer 3 switch at the Romeo site but I can only ping th yyy.yyy.30.192 subnet from the router (it is connected to the layer 3 switch)? The layer 3 switch has both the xxx.xxx.3.0 and yyy.yyy.30.0 subnets on 2 VLANS.