[j-nsp] JNCIP EBGP Case Study...

[Hoogen]

Hi Sean,

Thank you for the reply...

lab at R3# run show route 10.0.5.254

inet.0: 66 destinations, 85 routes (63 active, 0 holddown, 3 hidden)
+ = Active Route, - = Last Active, * = Both

10.0.5.0/24        *[IS-IS/15] 00:23:12, metric 106
                    > to 10.0.4.14 via ge-0/0/1.200
                      to 10.0.4.2 via ge-0/0/2.0

[edit]
lab at R3#

The Link between P1-R1 is being advertised by the IGP.. So next-hop self
isn't required for this peer. I would assume if the nex-hop is a problem..
the route would be hidden and set to Unusuable.. But this is not the case...
I just don't seem to receive the route.

-Hoogen

On Thu, Oct 29, 2009 at 1:43 AM, Sean Clarke <sean at clarke-3.demon.nl> wrote:

>
> Are you doing "Next hop self" on R1 to advertise to R3, or are you trying
> to send the routes without R3 knowing anything about the eBGP next-hop
> 10.0.5.254 ?  If the latter, advertise the link between R1 and P1 passively
> towards R3
>
>
>
> On 10/29/09 9:27 AM, Hoogen wrote:
>
>> Well I am working with my J-Series routers to do most topologies.. This
>> problem has somehow baffled me alot. Any help is greatly appreciated...
>>
>> A part of topology.. I think the problem lies somewhere in this...
>>
>> P1---R1---R3 (Both R1 and R3 are in 65000... and R1 is peering with P1
>> which
>> is AS 1492)
>>
>> R1 receives
>>
>> lab at R1# run show route receive-protocol bgp 10.0.5.254
>>
>> inet.0: 65 destinations, 69 routes (63 active, 0 holddown, 4 hidden)
>>   Prefix                  Nexthop              MED     Lclpref    AS path
>> * 3.4.0.0/20              10.0.5.254                              1492 I
>> * 6.0.0.0/7               10.0.5.254                              1492 I
>> * 120.120.0.0/24          10.0.5.254                              1492 I
>> * 120.120.1.0/24          10.0.5.254                              1492 I
>> * 120.120.2.0/24          10.0.5.254                              1492 I
>> * 120.120.3.0/24          10.0.5.254                              1492 I
>> * 120.120.4.0/24          10.0.5.254                              1492 I
>> * 120.120.5.0/24          10.0.5.254                              1492 I
>> * 120.120.6.0/24          10.0.5.254                              1492 I
>> * 120.120.7.0/24          10.0.5.254                              1492 I
>> * 120.120.69.128/25       10.0.5.254                              1492 I
>>
>> __juniper_private1__.inet.0: 2 destinations, 2 routes (2 active, 0
>> holddown,
>> 0 hidden)
>>
>> iso.0: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
>>
>> [edit]
>> lab at R1#
>>
>> And then R1 sends this to R3
>>
>> lab at R1# run show route advertising-protocol bgp 10.0.3.3
>>
>> inet.0: 65 destinations, 69 routes (63 active, 0 holddown, 4 hidden)
>>   Prefix                  Nexthop              MED     Lclpref    AS path
>> * 3.4.0.0/20              10.0.5.254                   100        65412
>> 65412 1492 I
>> * 6.0.0.0/7               10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.0.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.1.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.2.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.3.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.4.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.5.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.6.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.7.0/24          10.0.5.254                   100        65412
>> 65412 1492 I
>> * 120.120.69.128/25       10.0.5.254                   100        65412
>> 65412 1492 I
>> * 192.168.10.0/24         Self                         100        I
>> * 192.168.100.0/24        Self                 101     101        I
>>
>> [edit]
>> lab at R1#
>>
>> So far so good...
>>
>> Now R3 only receives
>>
>> lab at R3# run show route receive-protocol bgp 10.0.6.1
>>
>> inet.0: 66 destinations, 106 routes (63 active, 0 holddown, 17 hidden)
>>   Prefix                  Nexthop              MED     Lclpref    AS path
>> * 192.168.10.0/24         10.0.6.1                     100        I
>> * 192.168.100.0/24        10.0.6.1             101     101        I
>>
>> __juniper_private1__.inet.0: 2 destinations, 2 routes (2 active, 0
>> holddown,
>> 0 hidden)
>>
>> iso.0: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
>>
>> [edit]
>> lab at R3#
>>
>> I check to see if I have an import policy but it's not present... I am not
>> sure why I am not receiving any routes from R1 except for those internal
>> routes...
>>
>> group 65000 {
>>     type internal;
>>     local-address 10.0.3.3;
>>     export ibgp;
>>     neighbor 10.0.6.1;
>> }
>>
>> As you notice there is no policy to deny any routes.. Can someone help me
>> out here..
>>
>> -Hoogen
>> _______________________________________________
>> juniper-nsp mailing list juniper-nsp at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>
>>
>>
>>
>
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp
>