[j-nsp] Hidden IPv4 iBGP routes

[Sascha Luck]

John,

On Tue, Mar 13, 2012 at 09:30:35AM -0600, John Neiberger wrote:
>I was troubleshooting a problem last night and it boiled down to a
>Juniper router that was not a whole slew of iBGP routes from a
>neighboring ASR9K. I'm too new to Junos to decipher the reason for it.
>I had to disguise it a bit, so I hope it's still readable. What does
>this actually mean? Can you tell from this output why it is being
>hidden?

>xe-0/0/0.0, selected
>                Protocol next hop: y.y.y.y [correct protocol next-hop from ebgp]
>                Indirect next hop: 9c48790 -
>                State: <Hidden Int Ext>
>                Local AS: OurAS Peer AS: OurAS
>                Age: 1w3d 23:59:56      Metric2: 0
>                Task: BGP_[stuff]
>                AS path: XXXXX  YYYYY I (Looped: XXXXX)

I'd say the fact that the ASPATH contains a loop results in the route being hidden.
IIRC that is default behaviour in JunOS

rgds,
s.