[j-nsp] iBGP and IPv6

[Jonathan Call]

I apologize. The email looked fine when I got it back from the list.

OSPF/OSPF3 are the IGP. When I shut them off the BGP route for the loopback disappears.Limiting IBGP to only export directly connected routes would
        prevent this scenario from happening at all but it does not explain why router1 will mark
        the IPv4 loopback route it received as hidden/unusable but the
        IPv6 loopback route is not.

Jonathan


Subject: Re: [j-nsp] iBGP and IPv6
To: lordsith49 at hotmail.com; juniper-nsp at puck.nether.net
From: mark.tinka at seacom.mu
Date: Wed, 15 Apr 2015 20:38:18 +0200


  
    
  
  
    Your pasting is not formatting
      well. Makes it hard to help you.

      

      Mark.

    

    On 15/Apr/15 20:23, Jonathan Call
      wrote:

    
    
      
      
      OSPF/OSPFv3 are the IGP, which apparently are
        feeding back into IBGP:
        With OSPFv3 enabled:
        2001:db8:4000::1/128*[Direct/0] 1w0d 21:13:49
                           > via lo0.1
                            [OSPF3/10] 1w0d 21:13:44, metric 0
                           > via lo0.1
                            [BGP/170] 00:00:18, MED 1, localpref 100,
        from 2001:db8:4000::2
                              AS path: I
                           > to fe80:db8:4000:1::3 via ge-0/0/8.0
        With OSPFv3 disabled:
        vr-1.inet6.0: 8 destinations, 9 routes (8 active, 0 holddown, 0
        hidden)
        + = Active Route, - = Last Active, * = Both
        2001:db8:4000::1/128*[Direct/0] 1w0d 21:10:41
                           > via lo0.1
                            [OSPF3/10] 1w0d 21:10:36, metric 0
                           > via lo0.1
        Limiting IBGP to only export directly connected routes would
        prevent this. It still does not explain why router1 will mark
        the IPv4 loopback route it received as hidden/unusable but the
        IPv6 loopback route is not.
        Jonathan
        Subject: Re: [j-nsp] iBGP and IPv6
        To: lordsith49 at hotmail.com; juniper-nsp at puck.nether.net
        From: mark.tinka at seacom.mu
        Date: Wed, 15 Apr 2015 18:02:30 +0200 On 15/Apr/15 17:43,
        Jonathan Call wrote: Correct.  The BGP route for the router's
        IPv4 loopback is marked as hidden/unusable. It does not show up
        in show route extensive output. Is this Loopback IPv4 address
        known by any other routing protocol, e.g., an IGP? Mark.