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BGP Question posted 11/13/2003
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Dear Group,

I am at BGP part of self study and have a quick question.

Scenario:
The routers are connected as below.

R1------R2------R3------R4

Between R1 and R2 EBGP is running. R3 & R4 EBGP is running. R2 & R3 runs ospf. R1 is advertising a route 192.168.100.0 with appropriate Network Command. R2 is advertising a route of 192.168.200.0.
At R2 & R3, the BGP Learned routes are re-distributed to ospf.


Sh ip bgp at r1:

  Network          Next Hop            Metric LocPrf Weight Path
*> 192.168.110.0    0.0.0.0                  0         32768 i
*> 192.168.200.0    192.168.1.193                          0 100 300 i

Sh ip route at R1:

    192.168.110.0/30 is subnetted, 1 subnets
C       192.168.110.0 is directly connected, Loopback1
B    192.168.200.0/24 [20/0] via 192.168.1.193, 00:27:04
    192.168.1.0/30 is subnetted, 1 subnets
C       192.168.1.192 is directly connected, Ethernet0
    192.168.100.0/32 is subnetted, 1 subnets
C       192.168.100.7 is directly connected, Loopback0

Sh ip bgp at R4:

*> 192.168.110.0    192.168.1.205                          0 100 200 i
*> 192.168.200.0    0.0.0.0                  0         32768 i

Sh ip route at R4:
B    192.168.110.0/24 [20/0] via 192.168.1.205, 00:29:46
C    192.168.200.0/24 is directly connected, Loopback1
    192.168.1.0/30 is subnetted, 1 subnets
C       192.168.1.204 is directly connected, Ethernet0
    192.168.100.0/28 is subnetted, 1 subnets
C       192.168.100.0 is directly connected, Loopback0

When I try to Ping 192.168.200.1 from r1, I get request timed out. Try to ping 192.168.110.1 from R4, request timed out.

I can make this to work, by entering nei.....ip add.....default-originate command at r2 & r3. Advertise default route to r1 & R4 from R2 & R3.

Is this the right way ?. Any better way?.

Thakns a lot,

---Sam.

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