Lab 3 - reachability
I'm working on Lab 3, and I'm having problems with reachability. To be more specific, BB1 knows nothing about my internal network (188.8.131.52/16) - there are no "network" commands in R6's initial config, which means it doesn't advertise the network to BB1.
At first I thought this was just another troubleshooting task, but... right now I'm not so sure how to solve this.
I tried announcing the network from R6 via BGP:
router bgp 100
network 184.108.40.206 mask 255.255.255.0
aggregate-address 220.127.116.11 255.255.0.0 summary-only
However, this has a very nasty side-effect - it automatically installs a route to Null0, which practically prevents the router from reaching half of the network (it no longer uses the default route).
Rack1R6#sh ip ro 18.104.22.168 255.255.0.0
Routing entry for 22.214.171.124/16
Known via "bgp 100", distance 200, metric 0, type locally generated
Redistributing via ospf 1
Advertised by ospf 1 subnets
Routing Descriptor Blocks:
* directly connected, via Null0
Route metric is 0, traffic share count is 1
AS Hops 0
What would be the recommended way to solve this issue?
[ Later edit: same problem with BB2 - the lab asks us to send it a default route via RIP (and the solution even checks for this route!), but the config for BB2 has "distribute-list prefix DENY_DEFAULT in" on RIP. Which once again means that BB2 knows nothing about my network... ]