No, I did not try putting a direct x-over cable between two switches neither different patch panel interlink.

The output of sh int fa 0/21 shows:

FastEthernet0/21 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 000d.28fd.4315 (bia 000d.28fd.4315)

Description: JERCITYSW02 trunk connection

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s

input flow-control is off, output flow-control is off

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:01, output 00:00:00, 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: fifo

Output queue :0/40 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute ouxtput rate 0 bits/sec, 0 packets/sec

214205 packets input, 30044425 bytes, 0 no buffer

Received 48145 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 40525 multicast, 0 pause input

0 input packets with dribble condition detected

2148548 packets output, 500501024 bytes, 0 underruns

0 output errors, 0 collisions, 11 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 PAUSE output

0 output buffer failures, 0 output buffers swapped out

Hi,

Your ports are showing up/up. Therefore the switches are connected together OK on a physical layer.

What exactly is the problem?

What does "sh cdp nei" tell you?

Regards

Sh Cdp nei does not show the neighboring switch. Sw1 does not Sw2 and vice versa.

I did not check mac table, but I cant ping from one switch to other. The show cdp nei on both switch does not show any entry for other.

I would prefer to use show mac address-table over show cdp neighbor because we do not know that cdp is running (is by default) or that it has not been disabled on a given port.

Having said that can you please show us the output from each switch given the following command:

"show run int vlan 1"

Here is the output:

Sw1:

Building configuration...

Current configuration : 91 bytes

!

interface Vlan1

ip address 192.168.10.1 255.255.255.0

ip helper-address 10.1.10.5

end

SW2:

Current configuration : 91 bytes

!

interface Vlan1

ip address 192.168.10.12 255.255.255.0

ip helper-address 10.1.10.5

end

Asif,

SW1:

(conf)#cdp run

SW2:

(conf)#cdp run

I just want to know which one of them is responsible to be a gateway of VLAN1. Are they running as Layer3 switch?

Toshi

CDP is running as I can see other cisco devices when I do sh cdp nei.

SW1 is the gateway of vlan1.

Asif,

First of all if the switch1 is responsible to be a gateway of vlan1. At switch2 I would take an ip-helper command off. Please post the configuration of both interfaces from both switches.

Can you use a "show cdp ne" command on both switched and see other switches but these two?

Toshi

Yes, I can use cdp neighbor but cant see the SW1 from SW2 and vice versa. However, I can see all other cisco devices connected to SW1 or SW2.

I am not on site right now, will post interface config later.

Thanks

Edison,

Thanks for your suggestion. I tried with Straight through cabling first, but connection did not come up. Then I tried with one side of crossover, which was able to bring the connection up for some time. Then it went down.

I think its more of a physical cabling issue, if my configuration is correct. Can you please check the config and let me know if I have any problems there.

Thanks,