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PostPosted: Sat Apr 28, 2012 7:50 pm 
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Hi all,

I have a cisco 2811 router doing nat on my home network and it works fine.
I've connected a cisco 2621 router to the 2811 both have serial T1 cards, I have enabled IP routing on both and have eigrp 1 process running. I can ping and telnet to each router and they are advertising the networks on each other. when i do a traceroute on the 2621 to an outside address or name example (msn.com) I get no reply. what am I missing here any points or direction to another site would be great
i have attached the configs for both r1 and r2 router along with a jpg of the lan

config, ship route and sh ip int br for r1
Current configuration : 5587 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname r1
!
boot-start-marker
boot-end-marker
!
card type t1 0 1
no logging console
!
no aaa new-model
!
resource policy
!
no network-clock-participate wic 1
!
!
ip cef
!
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.0.1
ip dhcp excluded-address 192.168.0.250
ip dhcp excluded-address 192.168.0.2
!
ip dhcp pool CIBU
import all
network 192.168.0.0 255.255.255.0
dns-server 209.18.47.61 209.18.47.62
default-router 192.168.0.1
!
!
ip domain list socal.rr.com
ip domain lookup source-interface FastEthernet0/0
!
!
!
voice-card 0
no dspfarm
!
!
!
!
!
!
!
!
!
!
controller T1 0/1/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
!
!
!
!
!
!
interface Loopback0
no ip address
shutdown
!
interface FastEthernet0/0
description InTernet
ip address dhcp
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
no cdp enable
!
interface FastEthernet0/1
description Lan
ip address 192.168.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
interface Serial0/1/0:0
ip address 192.168.10.38 255.255.255.252
encapsulation ppp
ip route-cache flow
no fair-queue
!
!
router eigrp 1
redistribute connected
redistribute static
passive-interface default
no passive-interface Serial0/1/0:0
network 192.168.10.0
no auto-summary
!
!
!
no ip http server
no ip http secure-server
ip nat inside source list 101 interface FastEthernet0/0 overload
!
access-list 101 permit ip 192.168.0.0 0.0.0.255 any
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
line vty 5 15
!
end

r1# 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 76.168.32.1 to network 0.0.0.0

192.168.10.0/24 is variably subnetted, 3 subnets, 2 masks
D 192.168.10.38/32
[90/2690560] via 192.168.10.37, 00:28:54, Serial0/1/0:0
C 192.168.10.36/30 is directly connected, Serial0/1/0:0
C 192.168.10.37/32 is directly connected, Serial0/1/0:0
76.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 76.168.32.0/20 is directly connected, FastEthernet0/0
S 76.85.238.41/32 [254/0] via 76.168.32.1, FastEthernet0/0
C 192.168.0.0/24 is directly connected, FastEthernet0/1
S* 0.0.0.0/0 [254/0] via 76.168.32.1


r1#sh ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 76.168.41.148 YES DHCP up up
FastEthernet0/1 192.168.0.1 YES NVRAM up up
Serial0/1/0:0 192.168.10.38 YES manual up up
Loopback0 unassigned YES manual administratively down down

config ship route and sh ip int br for r2
Current configuration : 949 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname r2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
ip cef
!
!
ip domain list socal.rr.com
ip domain lookup source-interface Serial0/1:0
ip name-server 209.18.47.61
ip name-server 209.18.47.62
!
!
!
controller T1 0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
!
!
interface Ethernet0/0
no ip address
shutdown
half-duplex
!
!
interface Serial0/1:0
ip address 192.168.10.37 255.255.255.252
encapsulation ppp
ip route-cache flow
no fair-queue
!
!
router eigrp 1
passive-interface default
no passive-interface Serial0/1:0
network 192.168.10.0
no auto-summary
!
ip http server
ip classless
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

r2# 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 192.168.10.38 to network 0.0.0.0

192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.10.38/32 is directly connected, Serial0/1:0
C 192.168.10.36/30 is directly connected, Serial0/1:0
76.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 76.168.32.0/20 [170/2181120] via 192.168.10.38, 00:47:57, Serial0/1:0
D EX 76.85.238.41/32 [170/2181120] via 192.168.10.38, 00:47:57, Serial0/1:0
D EX 192.168.0.0/24 [170/2181120] via 192.168.10.38, 00:27:09, Serial0/1:0
D*EX 0.0.0.0/0 [170/2181120] via 192.168.10.38, 00:47:58, Serial0/1:0


r2# sh ip int br
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 unassigned YES unset administratively down down
Serial0/1:0 192.168.10.37 YES manual up up

thanks in advance
hprompt


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home network.jpg
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PostPosted: Sat Apr 28, 2012 8:03 pm 
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We should assume you can do that from R1 right?


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PostPosted: Sat Apr 28, 2012 8:13 pm 
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192.168.10.36/30 isn't in the NAT access list on R1.


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PostPosted: Sat Apr 28, 2012 8:41 pm 
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i can ping access the internet from r1 not r2


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PostPosted: Sat Apr 28, 2012 8:45 pm 
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when you say 192.168.10.36/30 isn't in the NAT access list on R1, do I add it as below


ip nat inside source list 101 interface FastEthernet0/0 overload
!
access-list 101 permit ip 192.168.0.0 0.0.0.255 any
access-list 101 permit ip 192.168.10.0 0.0.0.255 any


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PostPosted: Sat Apr 28, 2012 8:56 pm 
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also I dont have a host connected to r2, i'm consoled into it and can ping anything on the other network except my dns name servers 209.18.47.61 and .62


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PostPosted: Sat Apr 28, 2012 9:27 pm 
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That acl will work. Or be specific ..... 192.168.10.36 0.0.0.3


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PostPosted: Sat Apr 28, 2012 11:50 pm 
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i still can't ping my dns server 209.18.47.61 or .62


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PostPosted: Sun Apr 29, 2012 11:28 am 
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Try 'ip nat inside' on interface Serial0/1/0:0 on R1.


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PostPosted: Sun Apr 29, 2012 4:32 pm 
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i tried that and still can't ping my dns servers from r2
thanks for the help


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PostPosted: Tue May 01, 2012 7:51 pm 
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I don't see the config for r2.


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PostPosted: Tue May 01, 2012 8:32 pm 
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it's there right at the end of the config for r1.
on r1 when I do sh ip ei top i get:
P 192.168.10.38/32, 0 successors, FD is Inaccessible
via 192.168.10.37 (2690560/2178560), Serial0/1/0:0
P 192.168.10.36/30, 1 successors, FD is 2439680
via Connected, Serial0/1/0:0
P 192.168.10.37/32, 1 successors, FD is 2178560
via Rconnected (2178560/0)

i'm reading up on 0 successors, FD is Inaccessible


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PostPosted: Tue May 01, 2012 9:09 pm 
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I see .37 as Connected on R1, yet configured on R2. Vice versa for .38.
Is the config you posted complete? e.g. Seeing a static route not shown in the configs.

I pasted your configs into a simple dynamips lab & have no troubles.
Guess if you've cleared the neighborship, and it's still not working, maybe a wri erase, reload and reconfig.

Do you even see a NAT translation on R1 during the attempted ping from R2?


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