HELP! Can not ping PC on other subnet

[kccane03]

Here the situation. We have our network subneted like this. There are NO VLAN's:

10.0.0.x Static IP's
10.0.1.x DHCP
10.0.2.x DHCP
10.0.3.x DHCP
*All PC's have the same Default Gateway.

Now, all the subnets except 10.0.0.x can ping this PC. The PC is on a 10.1.253.x subnet. I can ping(10.1.253.1)which is the interface on the 2600 router. I just can't ping the PC. Subnet 10.0.0.x are all static. We put them in manually.

Here's the config for the router:

Switch2621#sh run
Building configuration...

Current configuration : 2103 bytes
!
! Last configuration change at 15:58
! NVRAM config last updated at 15:58
!
version 12.1
no service single-slot-reload-enable
service timestamps debug datetime ms
service timestamps log datetime loca
service password-encryption
!
hostname Switch2621
!
logging buffered 8192 informational
no logging console
enable password 7 xxxxxxxxxxxxxxxx
!
!
!
!
!
memory-size iomem 10
clock timezone EST -5
clock summer-time EDT recurring
ip subnet-zero
no ip source-route
ip cef
no ip domain-lookup
!
!
!
!
interface FastEthernet0/0
description NAMS Network
ip address 10.1.253.1 255.255.255.0
ip helper-address 10.0.0.30
ip helper-address 10.0.0.31
duplex auto
speed auto!
interface Serial0/0
description connected to xxxxxxxxxxx
ip address 10.1.254.10 255.255.255.
ip directed-broadcast
no ip mroute-cache
service-module t1 framing sf
service-module t1 linecode ami
service-module t1 timeslots 1-24 sp
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
router eigrp 1
network 10.0.0.0
no auto-summary
eigrp log-neighbor-changes
!
ip classless
no ip forward-protocol udp tftp
no ip forward-protocol udp domain
no ip forward-protocol udp time
no ip forward-protocol udp netbios-n
no ip forward-protocol udp netbios-d
no ip forward-protocol udp tacacs
no ip http server
!
logging 10.0.0.16
access-list 66 deny any
snmp-server engineID local 000000090
snmp-server view novacm internet inc
snmp-server view novacm internet.6.3
snmp-server community public view no
snmp-server community cable-docsis R
snmp-server location xxxxxx
snmp-server contact xxxxxx
banner motd ^C
Unauthorized access is not permitted
prosecuted to the fullest extent of
^C
!
line con 0
exec-timeout 0 0
password 7 xxxxxxxxxxxxxx
login
line aux 0
line vty 0 4
password 7 xxxxxxxxxxx
login
!
ntp clock-period 17180127
ntp server 10.0.0.1
end

 

[gaveeve]

What is the default gateway for the PC on the 10.1.253.x network? It should be 10.1.253.1. Confused about the setup of your other Lans. Where are you pinging from? Another PC, the 2600 router and what subnet?

 

[firestormsp1]

What subnet masks are you using? Tthe mask on your interface s0/0 is incomplete

 

[kccane03]

I pinging from any pc from subnet 10.0.0.x. These will not ping a Linux box with the IP 10.1.253.28. But I can go to any PC on the other subnets, 10.0.1-3.x and it works fine. They are all going out through the same gateway.

The subnet mask we are using is 255.255.255.0

 

[Ciscon]

If you're using the same default gateway on 10.0.0.X, 10.0.1.X, 10.0.2.X, and 10.0.3.X networks, shouldn't your subnet mask be 255.255.252.0 ?

 

[Ciscon]

Just did a little research, and saw that the subnet mask in your eigrp network statement is optional.

So if you don't put one in, its going to treat it as a Class A address, 10.0.0.0 255.0.0.0.

Try 10.0.0.0 255.255.252.0, or better yet, give us the output of show ip eigrp topology

 

[kccane03]

Ciscon, thanks for the info but why would the eigrp make a difference?

 

[baddos]

"These will not ping a Linux box with the IP 10.1.253.28."

Looking at this, are you sure that the linux box is using 10.1.253.1 as it's default gateway? Type "ifconfig" in the console to be sure.

 

[kccane03]

The linux box is 10.1.253.28 but I can ping the interface 10.1.253.1.

 

[Ciscon]

Can you paste us the output of show ip eigrp topology

 

[baddos]

Yes... Post a "show ip route" as well.... I don't see how your router can see those subnets. Try having the router ping them.

 

[kccane03]

Thanks guys...

Switch2621>show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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 10.1.254.9 to network 0.0.0.0

216.22.69.0/30 is subnetted, 1 subnets
D 216.22.69.116 [90/2419200] via 10.1.254.9, 2w5d, Serial0/0
D EX 194.1.93.0/24 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
10.0.0.0/8 is variably subnetted, 9 subnets, 3 masks
D EX 10.2.0.0/16 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
D EX 10.3.0.0/16 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
D 10.0.0.0/16 [90/2419200] via 10.1.254.9, 2w5d, Serial0/0
D EX 10.1.0.0/16 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
D EX 10.4.0.0/16 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
D EX 10.5.0.0/16 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
D EX 10.101.21.0/24 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
C 10.1.253.0/24 is directly connected, FastEthernet0/0
C 10.1.254.8/30 is directly connected, Serial0/0
205.136.122.0/30 is subnetted, 1 subnets
D 205.136.122.192 [90/2928640] via 10.1.254.9, 2w5d, Serial0/0
D*EX 0.0.0.0/0 [170/2442240] via 10.1.254.9, 2w5d, Serial0/0
Switch2621>

Switch2621>show ip eigrp interfaces
IP-EIGRP interfaces for process 1

Xmit Queue Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Fa0/0 0 0/0 0 0/10 0 0
Se0/0 1 0/0 9 0/18 50 0
Switch2621>show ip eigrp topology
IP-EIGRP Topology Table for AS(1)/ID(10.1.254.10)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status

P 0.0.0.0/0, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 10.2.0.0/16, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 10.3.0.0/16, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 10.0.0.0/16, 1 successors, FD is 2419200
via 10.1.254.9 (2419200/28160), Serial0/0
P 10.1.0.0/16, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 10.4.0.0/16, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 10.5.0.0/16, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 10.101.21.0/24, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 194.1.93.0/24, 1 successors, FD is 2442240
via 10.1.254.9 (2442240/1732096), Serial0/0
P 10.1.253.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 10.1.254.8/30, 1 successors, FD is 2416640
via Connected, Serial0/0
P 205.136.122.192/30, 1 successors, FD is 2928640
via 10.1.254.9 (2928640/2169856), Serial0/0
P 216.22.69.116/30, 1 successors, FD is 2419200
via 10.1.254.9 (2419200/28160), Serial0/0

 

[gaveeve]

It looks like you are running 2 AS of eigrp. The 10.0.1-3.x is the one we are looking at and 10.x.0.0 is external(or running another AS). Yet 10.1.253.x and 10.1.254.x are directly connected. Is it possible you don't want two AS?

 

[kccane03]

You know what. I believe we want them the same. This would be the problem right? I they are in the same AS, would this solve the problem?

If so, how would I go about making them the same AS?

 

[kccane03]

Actually I think thats they way they want it. Once again, would that cause this problem? Because the IPs are all parts of the 10.0.0.0 network and all work except for the 10.0.0.x's.

 

[gaveeve]

Maybe, You can't actually see what's going on in the external network from what you've posted. The commands would be:
router(config)# router eigrp xx

the xx should match on all the routers.

 

[kccane03]

Problem solved. Thanks everyone. Faulty router.