Anyway, I'm trying to setup an EBGP Multi-hop session with a peer and
advertise us our local networks to one another (kind of a small time NAP,
except we are not passing FULL tables). He wants to take it slow so he's
only doing it over ISDN for now, fine. We tried to get this going with a
Farallon Netopia, but they are too stupid to do the job so now it is up to
Livingston. I know the structure of EBGP-MultiHop and I'm sure I can
figure out how to set it up, but I'm more concerned about getting the
PM2-i and the PM3 to talk to one another. On the Cisco, I need to have a
route to the network I am peering with. Fine.
Scenerio:
AS65001:
C7206 address 192.168.82.37
PM2-i address 192.168.82.5
AS65002:
PM3 address 193.169.244.22
C4500 address 193.169.244.2
!
interface loopback2 192.168.64.5
!
router bgp 65001
neighbor 193.169.244.2 remote-as 65002
neighbor 193.169.244.2 ebgp-multihop
neighbor 193.169.244.2 update-source loopback2
neighbor 193.169.244.2 soft-reconfiguration inbound
!
ip route 193.169.244.2 255.255.255.255 192.168.82.5
!
Okay, on the PM2-i via location tables, the only thing I can do since I
cannot route a /30 and have each side of the PPP link take an IP is to set
the destination address to Negotiated and:
add route 193.169.244.2 193.169.244.22 1
and everything would be fine. I would connect with a negotiated address
which would be the IP of the PM3's ether0 and my IP on the PM2-i would be
the IP of ether0. Since on the PM2-i, I'm routing an IP on the same
network as the Cisco in AS65002, it will default to there and BGP would be
up and happy, right?!
Now then, this is where it gets confusing. I would get BGP updates from
him and he would get BGP updates from me without a problem, but what
happens when we try to send traffic back and forth. If some guy in my AS
sends a packet to a network in his AS but the destination is on different
network , it would chole at the PM2-i because a) I only have a route to
one IP and b) I only have a static route to one of his networks, therefor
it would not work, right?! I could open it up and route his /24 instead
of his /32 through the portmaster, but what happens with the rest of his
Class C's? Do I have to configure static routes on my PM2-i for each one
of his Class C's?! Our network is not running RIP or OSPF anywhere. Only
BGP and static routes. How do I make this work (preferable without
starting up RIP or OSPF)?!
Another option is to scrap the PM2-i because it does not speak BGP and get
a 2524 with a bri interface. Now then, here is the question. Would I be
in the same prediciment and have to add static routes for all of his
networks or should I setup BGP on this 2524 and setup BGP on the PM3 in
AS65002? If that's the case, then I guess I'm still doing multi-hop, but
I was under the impression that you could run multihop without having
every router along the path run BGP.
Please let me know if their is a solution, or if I'm up sh!+'s creek
without a paddle. =P
TiA!
Regards,
Jason A. Lixfeld jlixfeld@idirect.ca
.oO
Systems Administrator [Level 4]
TUCOWS Interactive o/a Internet Direct
"Moo..." "A Different Kind of Internet Comany"
Phone: +1 (416) 236.5806 x 18
Fax: +1 (416) 236.5804
Oo.
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