[j-nsp] BGP EVPN, VXLAN and ECMP

Vincent Bernat bernat at luffy.cx
Thu Mar 29 07:58:51 EDT 2018


 ❦ 29 mars 2018 13:40 +0200, Sebastian Wiesinger <sebastian at karotte.org> :

>> vbe at net-connect001.gv2> show route 10.16.39.3 extensive
>> 
>> inet.0: 236 destinations, 908 routes (236 active, 0 holddown, 0 hidden)
>> 10.16.39.3/32 (4 entries, 1 announced)
>> TSI:
>> KRT in-kernel 10.16.39.3/32 -> {list:indirect(131094), indirect(131205)}
>>         *BGP    Preference: 140/-501
>>                 Next hop type: Indirect, Next hop index: 0
>>                 Address: 0xb21c210
>>                 Next-hop reference count: 3
>>                 Source: 10.64.0.5
>>                 Next hop type: Router, Next hop index: 1885
>>                 Next hop: 10.64.0.23 via xe-0/0/46.181
>>                 Session Id: 0x0
>>                 Next hop type: Router, Next hop index: 1767
>>                 Next hop: 10.64.128.23 via xe-1/0/47.183, selected
>>                 Session Id: 0x0
>>                 Protocol next hop: 10.64.0.23
>>                 Indirect next hop: 0xc5ceb00 131205 INH Session ID: 0x0
>>                 Protocol next hop: 10.64.128.23
>>                 Indirect next hop: 0xc5b8780 131094 INH Session ID: 0x0
>
> Interesting, which JunOS version is that? It looks slightly different
> here:
>
> root at storage-leaf-1# run show route 172.16.0.11/32 extensive 
>
> inet.0: 13 destinations, 13 routes (13 active, 0 holddown, 0 hidden)
> 172.16.0.11/32 (1 entry, 1 announced)
> TSI:
> KRT in-kernel 172.16.0.11/32 -> {list:172.17.1.0, 172.17.2.0}
>         *IS-IS  Preference: 18
>                 Level: 2
>                 Next hop type: Router, Next hop index: 0
>                 Address: 0xb21c290
>                 Next-hop reference count: 5
>                 Next hop: 172.17.1.0 via et-0/0/48.0 weight 0x1, selected
>                 Session Id: 0x0
>                 Next hop: 172.17.2.0 via et-0/0/49.0 weight 0x1
>                 Session Id: 0x0
>                 State: <Active Int>

This is:

Model: qfx5100-48s-6q
Junos: 17.3R2.10

Maybe because this is a route learnt from a route reflector?
-- 
Format a program to help the reader understand it.
            - The Elements of Programming Style (Kernighan & Plauger)


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