Ryan,
Does your IGP have an specific entry for 20.100.11.3 in tokyo ?
Is that IP ping'able ?
Do you have hard coded your router ID ?
Is 20.100.11.3 your loopback ? Do you have this loopback in your IGP ?
thanks
German
On Tue, 4 Jun 2002, Sher, Ryan wrote:
> Hi,
>
> I am trying to announce some aggregate routes from the core of my network
> (router: sfc1) to a router on the edge (router tok2). I dont understand the
> results I have seen. I have a simple policy on the RR in the core (sfc1)
> which takes the aggregate routes and advertises them to the clients on the
> edge (tok2). This policy works fine.
>
> The problem occurs on router tok2. It seems that out of two aggregates I
> advertise only one gets installed in the routing table while the other is
> hidden. I cant see any differences between these two aggregates, so it
> doesn't make sense to me why one would be installed in the Routing Table and
> the other not. The hidden route is telling me that the next hop is unusable,
> however tok2 does have a default route to this next hop (and the route that
> works has the identical next hop!)
>
> If I put a static route to the next hop both aggregates start working ...
> why?
>
> Thanks
> Ryan
>
> Here are some outputs comparing the two routes:
>
> lab@tok2# run show route 20.100.0.0/16 extensive hidden
>
> inet.0: 41 destinations, 60 routes (38 active, 0 holddown, 3 hidden)
> 20.100.0.0/16 (1 entry, 0 announced)
> BGP Preference: 170/-101
> Next hop type: Unusable
> State: <Hidden Int Ext>
> Local AS: 15412 Peer AS: 15412
> Age: 14:22
> Task: BGP_15412.20.100.11.3+179
> AS path: IAggregator: 15412 20.100.11.3
> Communities: 15412:700
> Localpref: 100
> Router ID: 20.100.11.3
> Indirect nexthops: 1
> Protocol Nexthop: 20.100.11.3 Indirect nexthop: 0 -
>
>
> [edit]
> lab@tok2# run show route 20.200.0.0/16 extensive
>
> inet.0: 39 destinations, 57 routes (36 active, 0 holddown, 3 hidden)
> 20.200.0.0/16 (1 entry, 1 announced)
> TSI:
> KRT in-kernel 20.200.0.0/16 -> {indirect(69)}
> Page 0 idx 1 Type 1 val 83c5e8c
> Nexthop: 20.100.11.3
> AS path: I
> Aggregator: 15412 20.100.11.3
> Communities: 15412:700
> Path 20.200.0.0 from 20.100.11.3 Vector len 4. Val: 1
> *BGP Preference: 170/-101
> Source: 20.100.11.3
> Nexthop: via t3-0/1/0.0, selected
> Protocol Nexthop: 20.100.11.3 Indirect nexthop: 8469110 69
> State: <Active Int Ext>
> Local AS: 15412 Peer AS: 15412
> Age: 22:02 Metric2: 12
> Task: BGP_15412.20.100.11.3+179
> Announcement bits (3): 0-KRT 4-BGP.0.0.0.0+179 5-Resolve
> inet.0
> AS path: IAggregator: 15412 20.100.11.3
> Communities: 15412:700
> Localpref: 100
> Router ID: 20.100.11.3
> Indirect nexthops: 1
> Protocol Nexthop: 20.100.11.3 Metric: 12 Indirect
> nexthop: 8469110 69
> Indirect path forwarding nexthops: 1
> Nexthop: via t3-0/1/0.0
>
>
> [edit]
> lab@tok2# run show route 20.100/16
>
> inet.0: 39 destinations, 57 routes (36 active, 0 holddown, 3 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 20.100.16.1/32 *[Direct/0] 3d 04:13:05
> > via lo0.0
> 20.100.16.2/32 *[OSPF/10] 00:00:28, metric 2
> > via t3-0/1/1.0
> 20.100.50.0/30 *[Direct/0] 3d 03:17:43
> > via t3-0/1/0.0
> [OSPF/10] 00:00:33, metric 2
> > via t3-0/1/0.0
> 20.100.50.2/32 *[Local/0] 3d 04:13:05
> Local via t3-0/1/0.0
> 20.100.50.4/30 *[OSPF/10] 00:00:28, metric 4
> > via t3-0/1/1.0
> 20.100.50.8/30 *[Direct/0] 00:00:33
> > via t3-0/1/1.0
> [OSPF/10] 00:00:28, metric 2
> > via t3-0/1/1.0
> 20.100.50.9/32 *[Local/0] 00:00:33
> Local via t3-0/1/1.0
>
> [edit]
> lab@tok2# run show route 20.200/16
>
> inet.0: 39 destinations, 57 routes (36 active, 0 holddown, 3 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 20.200.0.0/16 *[BGP/170] 00:20:11, localpref 100, from 20.100.11.3
> AS path: I
> > via t3-0/1/0.0
> 20.200.1.0/24 *[Direct/0] 3d 04:13:09
> > via fe-0/0/0.100
> 20.200.1.1/32 *[Local/0] 3d 04:13:09
> Local via fe-0/0/0.100
> 20.200.2.0/24 *[Direct/0] 3d 04:13:09
> > via fe-0/0/0.200
> 20.200.2.1/32 *[Local/0] 3d 04:13:09
> Local via fe-0/0/0.200
>
> [edit]
> lab@tok2# run show route 20.100.11.3
>
> inet.0: 41 destinations, 60 routes (38 active, 0 holddown, 3 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 0.0.0.0/0 *[OSPF/10] 00:01:25, metric 12
> > via t3-0/1/0.0
>
>
> [edit]
> lab@tok2# run ping 20.100.11.3
> PING 20.100.11.3 (20.100.11.3): 56 data bytes
> 64 bytes from 20.100.11.3: icmp_seq=0 ttl=255 time=0.924 ms
> 64 bytes from 20.100.11.3: icmp_seq=1 ttl=255 time=0.848 ms
> 64 bytes from 20.100.11.3: icmp_seq=2 ttl=255 time=0.825 ms
>
>
>
>
>
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This archive was generated by hypermail 2b29 : Mon Aug 05 2002 - 10:42:36 EDT