[j-nsp] JUNOS Equivalent to CISCO IOS next-hop-self

[Hannes Gredler]

On Tue, Oct 21, 2003 at 09:43:07AM +0200, Robert Kiessling wrote:
| "Paul Goyette" <pgoyette at juniper.net> writes:
| 
| > I can confirm that more than one customer has noticed that the
| > next-hop-self is unconditional, and therefore one's policy needs
| > to be selective WRT which routes are affected by such a policy.
| 
| And worse, there is no elegant way to write this policy. I.e. it's not
| possible to say
|          
|          from {
|               bgp-source ebgp;
|          }
|          then {
|               next-hop self;
|          }


there is a fix to this problem from JUNOS 6.1 onwards:

the fix allows the policy processor to match against the
"internal" flag which is set for all iBGP learned routes;

from now on your next-hop self policy should look like:

  juniper at route-relector> show configuration policy-options policy-statement nhs             
  term no-internal-rewrite {
      from {
          protocol bgp;
          internal; <-------- new option
      }
      then {
          next policy;
      }
  term final {
      then {
          next-hop self;
      }    
  } 

---


HTH,

/hannes