Re: IP ARP rep filtered src wrong cable ??

Thats already present in my config ? (encapsulation dot1q 16 native)

Am i missing something here ?

On Sat, May 16, 2009 at 8:30 PM, Dale Shaw <dale.shaw_at_gmail.com> wrote:

> Hi Michael,
>
> Try:
>
> interface Ethernet2/0.16
> encapsulation dot1Q 16 native
>
> Your router is sending out an ARP request with dot1q tag 16. The other
> system responds, but when the switch returns the ARP reply to your
> router, it's not tagging the frame and your router is receiving it in
> what it believes is the native VLAN (VLAN 1, by default). That's why
> you're getting the "wrong cable" message -- if you tell the router the
> native VLAN is 16, it will treat the incoming ARP reply as arriving on
> E2/0.16, instead of E2/0.
>
> Alternatively you can set the native VLAN on the switch side to the
> default value, 1 ("default switchport trunk native vlan" or
> "switchport trunk native vlan 1"). This will cause the switch to tag
> the ARP reply frame with dot1q 16 and your router will treat it
> accordingly.
>
> cheers,
> Dale
>
> On Sun, May 17, 2009 at 12:22 PM, Michael Jones <majonestx_at_gmail.com>
> wrote:
> > sure
> >
> > RSRack1R6#sho run int ethernet 2/0
> > Building configuration...
> >
> > Current configuration : 57 bytes
> > !
> > interface Ethernet2/0
> > no ip address
> > full-duplex
> > end
> >
> > RSRack1R6#sho run int ethernet 2/0.16
> > Building configuration...
> >
> > Current configuration : 87 bytes
> > !
> > interface Ethernet2/0.16
> > encapsulation dot1Q 16
> > ip address 16.0.0.6 255.0.0.0
> > end
> >
> >
> > Here is my switch config.- I know the problem lies between these two. I
> have
> > even created a vlan 16 SVI and on the below switch and haven't been able
> to
> > get icmp
> > across the trunk link. There is a another sub interface that works fine
> up
> > and down the switch. Which im sure isolates this to a native vlan issue.
> >
> > RSRack1SW2#sho run int fa0/6
> > Building configuration...
> >
> > Current configuration : 150 bytes
> > !
> > interface FastEthernet0/6
> > switchport trunk encapsulation dot1q
> > switchport trunk native vlan 16
> > switchport mode trunk
> > duplex full
> > end

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Received on Sat May 16 2009 - 20:37:50 ART