Yes, true.. ospf point-2mp change the next-hop. Hub becomes NH

On Tue, Jul 20, 2010 at 6:56 PM, marc abel <[email protected]> wrote:

> Can you also post a Show ip route? Also your frame relay interface configs
> would be helpful too.
>
> I think that it is showing them as untagged because MPLS sees them as a
> directly connected network.
>
> On Mon, Jul 19, 2010 at 9:48 PM, jason lau <[email protected]> wrote:
>
>> Hi,
>>
>> I am watching the Video and pratise it in GNS3, in this MPLS L3 VPN
>> Configuration lab, R2, R4, R5 and R6 are running OSPF type
>> Point-to-Multipoint, it generates host route and send it to neighbor, when
>> further configured MPLS,  I see something wrong here.
>>
>> For example, R2 has serial interface IP 100.100.100.2/24 configured, in
>> OSPF world, R6 receives a host route 100.100.100.2/32, nothing is wrong
>> untill MPLS is enabled. R6 assigns a lable to host route 100.100.100.2/32and 
>> advertise it. But since R2 doesn't have this host route in its routing
>> table, it only has 100.100.100.2/24 as Connected route, so R6 will not
>> recevie lable for 100.100.100.2/32 from R2, in the LFIB, the Outgoing
>> Lable is untagged:
>>
>> R6#sh mpls forwarding-table
>> Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop
>> tag    tag or VC   or Tunnel Id      switched   interface
>> 16     Untagged    100.100.100.5/32  0          Se1/0      100.100.100.5
>> 17     Untagged    100.100.100.2/32  0          Se1/0      100.100.100.2
>> 18     Pop tag     5.5.5.5/32        0          Se1/0      100.100.100.5
>> 19     Pop tag     2.2.2.2/32        0          Se1/0      100.100.100.2
>> 20     Untagged    100.100.100.4/32  0          Se1/0      100.100.100.4
>> 21     Pop tag     4.4.4.4/32        0          Se1/0      100.100.100.4
>> R6#
>>
>> same thing for all other host routes from spoke routers. I think this will
>> cause problem for L3 VPN.
>>
>> Any ideal?
>>
>> Thanks
>>
>>
>> Jason
>>
>>
>>
>>
>>
>> _______________________________________________
>> For more information regarding industry leading CCIE Lab training, please
>> visit www.ipexpert.com
>>
>>
>
> _______________________________________________
> For more information regarding industry leading CCIE Lab training, please
> visit www.ipexpert.com
>
>
_______________________________________________
For more information regarding industry leading CCIE Lab training, please visit 
www.ipexpert.com

Reply via email to