Cisco 2600 vlan dot1q "wrong cable" message

[denismarcelo]

I have a cisco 2600 and trying to configure some vlan's on that i got the following error on debug:

00:02:16: IP: s=192.168.200.1 (local), d=192.168.200.3 (FastEthernet1/0.20), len 100, encapsulation failed

00:02:16: IP ARP rep filtered src 192.168.200.3 0014.bf59.9f31, dst 192.168.200.1 0009.4364.0410 wrong cable, interface FastEthernet1/0

00:02:16: IP ARP rep

following goes a 'sh version', 'sh running-config', and debug errors:

Somebody can help-me?`

tanx!

[zubairjalal]

Check the Cisco IOS debug command reference

http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_command_reference_chapter09186a008017cfa2.html#wp1116225

This indicates that another host on the network attempted to inform the router that it is on network 192.168.200.3, but the router does not know that the network is attached to a different router interface/subinterface. The remote host (probably a PC or an X terminal) is misconfigured. If the router were to install this entry, it would deny service to the real machine on the proper cable.

What is the default gateway on this 192.168.200.3 machine.

--Pls rate if this helps--

[denismarcelo]

Dear zubairjalal,

The 192.168.200.3 is a linksys srw224g4 swich that the router is atached to. and the default router of the switch is the 192.168.200.1 (the sub-interface router)

I can't see the solution yet.

thanx

[ankbhasi]

Hi Denis,

As you mentioned your router is connected to linksys switch. Have you configurd the switchport on linksys router as trunk interface? Because cisco router is expecting tag traffic from vlan 20?

Just confirm the switchport config for linksys switch?

Ankur

[denismarcelo]

It didnt work with the port configured to trnk or to vlan 20...

[denismarcelo]

.. and sorry but i didn't understand very well what i have to do with your msg..

can u give some advices?

my router does't work in any vlan instead vlan 1

[amit-singh]

Hi Denis,

The error that you are getting is about the encapsulation failed on the port connecting to the router.

The problem that you are facing is that when you are configuring router on stick for inter-vlan routing, you have to configure the switchport connecting to the router as Trunk port and other the router side you have configure the respective sub-interfaces with the proper vlan id's. For example :

interface Ethernet0/0.16

encapsulation dot1Q 16 <-- Vlan ID

ip address 16.0.0.6 255.0.0.0

!

interface Ethernet0/0.26

encapsulation dot1Q 26 <-- Vlan ID

ip address 26.0.0.6 255.0.0.0

Make sure that you configure the interfaces for all the vlans that you have with teh proper ID's posted above and all the vlans should be allowed on the trunk port. Makre sure that you native vlan mathces at both the ends.

If you want you can paste your router configuration and we will help you to design it for you.

HTH,

-amit singh

[denismarcelo]

how do i set the navive vlan on the router?

tnx

[ankbhasi]

Hi Denis,

For an example

Under subinterface

encapsulation dot1Q 20 native

HTH

Ankur