[j-nsp] hidden bgp route

[Bosco Sachanandani]

hi,

As asked by some of you, maybe this is more helpful. Also, do I need to set the next-hop self option in this case on my router?



admin at srmum1-re0> show route table Gp_VRF hidden extensive 

Gp_VRF.inet.0: 513 destinations, 524 routes (512 active, 0 holddown, 2 hidden)
202.123.213.80/28 (2 entries, 1 announced)
TSI:
Page 0 idx 1 Type 1 val 88002d8
    Nexthop: 213.181.39.20
    AS path: 6774 19440 I
    Communities:
Page 0 idx 5 Type 1 val 8a93b7c
    Nexthop: 213.181.39.20
    Localpref: 100
    AS path: 6774 19440 I
    Communities:
Path 202.123.213.80 from 213.181.39.20 Vector len 4.  Val: 1 5
KRT in-kernel 202.123.213.80/28 -> {indirect(393)}
         BGP    Preference: 170/-101
                Next hop type: Unusable
                State: <Hidden Ext>
                Inactive reason: Unusable path
                Local AS: 64721 Peer AS: 19440
                Age: 1d 5:19:26         Metric: 0 
                Task: BGP_19440_64721.202.123.213.83+179
                AS path: 19440 I
                Localpref: 100
                Router ID: 192.168.4.1
                Indirect next hops: 1
                        Protocol next hop: 202.123.213.83 Indirect next hop: 0 -
                        202.123.213.80/28 Originating RIB: Gp_VRF.inet.0
                          Node path count: 1
                          Indirect nexthops: 1
                                Protocol Nexthop: 213.181.39.20
                                Indirect nexthop: 86d1000 393
                                Indirect path forwarding nexthops: 1
                                        Nexthop: 213.181.39.25 via fe-0/3/1.3
                                0.0.0.0/0 Originating RIB: Gp_VRF.inet.0
                                  Node path count: 1
                                  Forwarding nexthops: 1
                                        Nexthop: 213.181.39.25 via fe-0/3/1.3
                    
213.181.39.0/24 (1 entry, 0 announced)
         BGP    Preference: 170/-101
                Next hop type: Unusable
                State: <Hidden Ext>
                Local AS: 64721 Peer AS:  6774
                Age: 1d 5:21:07 
                Task: BGP_6774_64721.213.181.39.20+179
                AS path: 6774 I (Atomic)Aggregator: 6774 213.181.59.92
                Localpref: 100
                Router ID: 213.181.58.132
                Indirect next hops: 1
                        Protocol next hop: 213.181.39.20 Indirect next hop: 0 -
                        0.0.0.0/0 Originating RIB: Gp_VRF.inet.0
                          Node path count: 1
                          Forwarding nexthops: 1
                                Nexthop: 213.181.39.25 via fe-0/3/1.3





Probably you're not setting next-hop to self for these prefixes...

Please provide extensive info.
>admin at srmum1-re0> show route table Gp_VRF hidden    extensive

cu
Anton

At 11:37 AM 1/8/2004 +0530, you wrote:
>Hi all,
>
>Need a small piece of info. I am running BGP with 2 upstream GRX 
>providers. I am recieving all routes correctly from them except the ones 
>mentioned below.
>
>It turns out that these prefixes are the GRX provider's network prefix's 
>itself. Since it does not get installed in the route table, I have to put 
>in static routes to access stuff like the their DNS servers which are part 
>of these subnets, which is not a very nice thing to do.
>
>My query in general is that what are "hidden" routes? I am using an M20 
>with JunOS , the upstream provider is using a Cisco 7000 series box. There 
>are NO inbound BGP policies at my end.
>
>The GRX guys cannot seem to figure out why this is happening.
>
>thanks.
>
>
>admin at srmum1-re0> show route table Gp_VRF hidden
>
>Gp_VRF.inet.0: 514 destinations, 525 routes (513 active, 0 holddown, 2 hidden)
>+ = Active Route, - = Last Active, * = Both
>
>202.123.213.80/28   [BGP/170] 23:37:07, MED 0, localpref 100, from 
>202.123.213.83
>                       AS path: 19440 I
>                       Unusable
>213.181.39.0/24     [BGP/170] 23:38:48, localpref 100, from 213.181.39.20
>                       AS path: 6774 I
>                       Unusable
>
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