2610 trouble

[Sabap]

I have a Cisco 2610 router in a local county complex that houses 2 different agencies. I have separated their networks by using Vlans.

I use the single ethernet interface with one sub-interface for my router connection to the trunk port of the switch. I am using dot1q 2 encapsulation on the subinterface for my Vlan. I am using RIP as the routing protocol.

This config has been working for the past month. Now the router will not route any packets. While telnetted into the router, I can ping every device on each subnet. From every device, I can ping the router interface that is on that subnet. I CANNOT ping the opposite router interface, nor any device on the opposite subnet.

I have tried erasing the starting-config and reloading my saved one via TFTP. I have also re-loaded my IOS version (thinking something could have become corrupted) Neither one worked. I have erased the starting-config and reloaded and re-wrote the running config from scratch... still the same thing.

Has anyone else seen this happen? could it possibly be a hardware malfunction? Nothing on the network has been changed in any way. It just stopped routing =(

Thank you,
Matt

 

[IPKONFIG]

Please post your configuration. I see in your post that your claiming that your running sub interfaces on your 2610's ethernet port. You need to have a fast ethernet port to be able to sub interface IP. You can sub interface IPX on ethernet, but your post doesn't mention IPX, so....

Unless you have a brand spanking new 2610 that got a fast ethernet port and it's just labled "ethernet". Anyway, post your config if you can...I'd like to take a look if you don't mind.

"I can picture a world without war. A world without hate. A world without fear. And I can picture us attacking that world, because they'd never expect it."
- Jack Handey, Deep Thoughts

 

[Sabap]

Password:
VisionQuest>en
Password:
VisionQuest#sh run
Building configuration...

Current configuration : 753 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname VisionQuest
!
no logging console
enable secret 5 $1$UOFo$tAG6tUrRjMIDF1tdzd2/S1
!
!
!
!
!
ip subnet-zero
!
!
!
!
interface Ethernet0/0
description *** (V-LAN 1) Network 192.168.1.0/24 L.A.M.P ***
ip address 192.168.1.254 255.255.255.0
!
interface Ethernet0/0.1
description *** (V-LAN 2) Network 172.16.6.0/24 South Health ***
encapsulation dot1Q 2
ip address 172.16.6.254 255.255.255.0
!
interface Serial0/0
no ip address
shutdown
!
router rip
network 172.16.0.0
network 192.168.1.0
!
ip classless
no ip http server
!
!
line con 0
password 7 04480A040E31
login
transport input none
line aux 0
password 7 131616100A1C
login
line vty 0 4
password 7 140413090D14
login
!
end

VisionQuest#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-D-M), Version 12.1(4), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Wed 30-Aug-00 09:00 by cmong
Image text-base: 0x80008088, data-base: 0x8091058C

ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)

VisionQuest uptime is 1 day, 3 hours, 43 minutes
System returned to ROM by reload
System image file is "flash:c2600-d-mz.121-4.bin"

cisco 2610 (MPC860) processor (revision 0x203) with 20480K/4096K bytes of memory.
Processor board ID JAB0339006W (4190324610)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

VisionQuest#sh int
Ethernet0/0 is up, line protocol is up
Hardware is AmdP2, address is 0030.80ee.2c80 (bia 0030.80ee.2c80)
Description: *** (V-LAN 1) Network 192.168.1.0/24 L.A.M.P ***
Internet address is 192.168.1.254/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
142125 packets input, 14594903 bytes, 0 no buffer
Received 141871 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
12039 packets output, 1178009 bytes, 0 underruns
0 output errors, 1 collisions, 2 interface resets
0 babbles, 0 late collision, 6 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Ethernet0/0.1 is up, line protocol is up
Hardware is AmdP2, address is 0030.80ee.2c80 (bia 0030.80ee.2c80)
Description: *** (V-LAN 2) Network 172.16.6.0/24 South Health ***
Internet address is 172.16.6.254/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 2.
ARP type: ARPA, ARP Timeout 04:00:00
Serial0/0 is administratively down, line protocol is down
Hardware is PQUICC with Fractional T1 CSU/DSU
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=down DSR=up DTR=down RTS=down CTS=down

VisionQuest#

I can see your concearn about the Fast Ethernet Interface... I too thought the same thing. However, please keep in mind that this configuration has been working for weeks. It all of a sudden quit routing.

Thanks,
Matt

 

[IPKONFIG]

I'm going to create this in my lab...I still don't think this config is 100%. I want to see this. I'll get back to you today.

"I can picture a world without war. A world without hate. A world without fear. And I can picture us attacking that world, because they'd never expect it."
- Jack Handey, Deep Thoughts

 

[Degg]

There is a version of 12.2 that will do dot1q over a 10mb Ethernet port. If you have a lot of traffic the link might slow down, but for a small network it should be fine. You should also do 2 subinterfaces, one for each vlan. This way one of the networks is not on VLan 1, the management VLan.
Also, s0/0 is admin down. Is it supposed to be??? Are you trying to route between subnets, or to the internet?? There is also no IP on s0/0. If you are just routing between subnets, then why not just make it all one big network?

Degg
Network Administrator

 

[IPKONFIG]

Ok, after further checking..I have discovered that you can subinterface ethernet ports on new models of 2600's. This has nothing to do with IOS, but infact a chipset upgrade to the ethernet interface. Now I also found out that Cisco does not support using sub-interfacing ethernet for IP due to instability issues. Which could or could not be the very issue that your having Sabap. I don't know. My 2600's are not of the newer versions, so I could not duplicate this problem in my lab. I wish I had something else for you but I don't. I would suggest that if you have a Smartnet contract, that you use it and call TAC for support. Thanks for letting me look at this.

"I can picture a world without war. A world without hate. A world without fear. And I can picture us attacking that world, because they'd never expect it."
- Jack Handey, Deep Thoughts

 

[Sabap]

Thank you for your help.. to answer Degg's question. There are 2 Different organizations in the same building. They are also sharing a 3com NBX 100 Voice over IP Phone system. One of the organizations is a medical company. They want their DATA on a different network to insure security. However they wan to be able to use the nework utilities and features of the 3com box... witch is on the other subnet. What you did not see in my config were the Access-lists I had allowing them only the ability to access the NBX host. That is why they cannot be on the same network and why I chose a V-lan instead of more costly equipment.

And to answer your other question about the Serial interface... NO I am not using it. and this router has no connectivity to the internet... this router is used for internal routing only.

Thank you,
Matt