[j-nsp] origin of bgp routes with juniper

sthaug at nethelp.no sthaug at nethelp.no
Fri Apr 17 06:24:59 EDT 2009


> i have doubt on the origin of route which we learn from juniper routers .
> i believe juniper router tag only one origin on all the routers which they
> are learning from connetced BGP neighbours
> it can be either , egp , incomplete or igp , by default it is igp .

As I answered to the same question from you on cisco-nsp:

Unless you have an explicit policy to set/change the origin on the
Juniper side, the Juniper router won't change the origin.

Here is an example from a Cisco router which has received all its
routes from Juniper routers:

   Network          Next Hop      Metric LocPrf Weight Path
* i4.128.0.0/9      193.75.0.79        0    100      0 3356 i
*>i                 193.75.0.79        0    100      0 3356 i
*>i4.224.56.0/24    193.75.0.70    13331    100      0 3549 7018 ?
* i                 193.75.0.79             100      0 1299 7018 ?
* i47.16.0.0/14     193.75.0.79             100      0 1299 4323 8153 7099 e
*>i                 193.75.0.70    13332    100      0 3549 4323 8153 7099 e

Steinar Haug, Nethelp consulting, sthaug at nethelp.no


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