[c-nsp] VRF & Hairpin Routing?

[Bruce Pinsky]

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Sean Watkins wrote:
> Hi,
> 
> Is there anyway one can use a VRF to hairpin route some traffic in and out
> of a router on fast ethernet interfaces?
> 
> I have got what I believe a good config, but IOS doesn't like to see a
> packet from itself going to itself?
> 
> Here is important snippits of my config
> 
> 
> ip vrf Customers
>  rd 1:1
> !
> ip cef
> 
> interface FastEthernet0/0.11
>  encapsulation dot1Q 11
>  ip vrf forwarding Customers
>  ip address 10.10.1.2 255.255.255.0
>  no snmp trap link-status
> !
> 
> interface FastEthernet0/1.10
>  encapsulation dot1Q 10
>  ip address 10.10.1.1 255.255.255.0
>  no snmp trap link-status
> !
> interface FastEthernet0/1.12
>  encapsulation dot1Q 12
>  ip vrf forwarding Customers
>  ip address 10.12.1.1 255.255.255.0
>  no snmp trap link-status
> !
> 
> ip route vrf Customers 0.0.0.0 0.0.0.0 10.10.1.1
> 
> 
> 
> Vlans 10 & 11 are connected together in an upstream switch  via a crossover
> cable.
> 
> 
> I get these error messages on debug arp;
> 
> 
> 1d00h: IP ARP: sent req src 10.10.1.1 0003.fdcb.ec06,
>                  dst 10.10.1.2 0000.0000.0000 FastEthernet0/1.10
> 
> 1d00h: IP ARP req filtered src 10.10.1.1 0003.fdcb.ec06, dst 10.10.1.2
> 0000.0000.0000 it's our address
> 
> 
> 
> Any ideas?
> 

Why are you trying to do this?  What's the objective?

- --
=========
bep

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