[Xorp-hackers] OLSR seems to be mostly working, but no subnet routes

[Ben Greear]

I'm doing some testing with OLSR (plus my hacks to make it work with
multiple router tables and multiple instances of xorp).

I thought it was working previously, but I wasn't paying close enough
attention.  It is adding routes to individual interfaces, but no subnet routes,
so traffic won't actually flow across my network.

A diagram of my network is at:
http://www.candelatech.com/oss/olsr_diag.pdf

The routes for router 3 are:

10.2.2.2 via 10.2.3.2 dev 2.3.3  proto xorp  metric 5 notify
10.1.2.2 via 10.2.3.2 dev 2.3.3  proto xorp  metric 5 notify
10.1.2.1 via 10.1.3.1 dev 1.3.3  proto xorp  metric 5 notify
10.2.3.2 via 10.2.3.2 dev 2.3.3  proto xorp  metric 5 notify
10.1.3.1 via 10.1.3.1 dev 1.3.3  proto xorp  metric 5 notify
10.1.1.1 via 10.1.3.1 dev 1.3.3  proto xorp  metric 5 notify
10.2.3.0/24 dev 2.3.3  scope link
10.1.3.0/24 dev 1.3.3  scope link
10.3.3.0/24 dev br3  scope link
unreachable default  proto xorp  metric 1 notify
fe80::/64 dev 2.3.3  metric 1024  mtu 1500 advmss 1440 hoplimit 4294967295
unreachable default dev lo  metric 1024  error -101 mtu 16436 advmss 16376 hoplimit 4294967295


I was assuming that OLSR would be sharing subnet routes for the subnets directly connected
to remote OLSR routers, and not just the interface IP routes.


My config for router 3 is below.  Others are similar:

root at nehalem# show
     protocols {
         olsr4 {
             main-address: 10.3.3.3
             interface br3 {
                 vif br3 {
                     address 10.3.3.3 {
                     }
                 }
             }
             interface "1.3.3" {
                 vif "1.3.3" {
                     address 10.1.3.3 {
                         interface-cost: 2
                     }
                 }
             }
             interface "2.3.3" {
                 vif "2.3.3" {
                     address 10.2.3.3 {
                         interface-cost: 2
                     }
                 }
             }
         }
         static {
             interface-route 0.0.0.0/0 {
                 next-hop-interface: "my_discard"
                 next-hop-vif: "my_discard"
             }
         }
     }
     fea {
         unicast-forwarding4 {
             table-id: 10003
         }
     }
     interfaces {
         interface "my_discard" {
             unreachable: true
             vif "my_discard" {
             }
         }
         interface br3 {
             vif br3 {
                 address 10.3.3.3 {
                     prefix-length: 24
                 }
             }
         }
         interface "1.3.3" {
             vif "1.3.3" {
                 address 10.1.3.3 {
                     prefix-length: 24
                 }
             }
         }
         interface "2.3.3" {
             vif "2.3.3" {
                 address 10.2.3.3 {
                     prefix-length: 24
                 }
             }
         }
     }

Thanks,
Ben

-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com