[c-nsp] IP communication problem

[Heath Jones]

Hi Chris,

'Also, I see the both the 2560G and the 2801 in the CDP
neighbor output.'

Is the port facing 2801 set to vlan 501 or 503?

Not sure about the encapsulation failed error..



On 15 August 2010 00:19, Christopher J. Wargaski <wargo1 at gmail.com> wrote:

> Hello--
>
> I have a 2801 router at a remote location and am trying to bring up a
> 100 Mpbs wireless (point to point) backup connection between the
> router and a routing switch at the main
> location.
>
> (FS14 2801 router)<--->(FS14 3560G layer 2 switch)<~~radio link #1~~>
> (2955 layer 2 switch)<~~radio link #2~~>(FS13 3560G routing switch)
>
> >From the FS13 3560G I can ping the vlan interface on the 2955 switch.
>
> >From the FS13 3560G I can not ping the IP address on the subinterface
> of the FS14 2801 router.
>
> FS14 router subinterface:
> interface FastEthernet0/0.501
>  description Uplink to point to point wireless link
>  encapsulation dot1Q 501
>  ip address 172.16.0.6 255.255.255.252
>
>
> 3560G interface:
> interface Vlan501
>  description Wireless link to FS14
>  ip address 172.16.0.5 255.255.255.252
>
>
> >From either location, I am not able to ping the Vlan 501 peer.
>
> >From the 2955 switch in the middle, I can ping a Vlan503 interface on
> the 3560G. Also, I see the both the 2560G and the 2801 in the CDP
> neighbor output.
>
> With debugs enabled on the router, I try to ping an IP address on the
> same network and see the following in the logs:
>
> 17w2d: IP: tableid=0, s=172.16.0.6 (local), d=172.16.0.5
> (FastEthernet0/0.501), routed via RIB
> 17w2d: IP: s=172.16.0.6 (local), d=172.16.0.5 (FastEthernet0/0.501),
> len 100, sending
> 17w2d: IP: s=172.16.0.6 (local), d=172.16.0.5 (FastEthernet0/0.501),
> len 100, encapsulation failed
>
> Any thoughts?
>
>
>
> cjw
>
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