213.0.0 IS VARIABLY SUBNETTED, 2 SUBNETS, 2 MASKSO E2 213.0.0...

128.213.0.0 is variably subnetted, 2 subnets, 2 masks

O E2 128.213.0.0 255.255.0.0

[110/2000] via 203.250.14.1, 00:45:01, Ethernet0

O 128.213.63.0 255.255.255.252

[110/74] via 203.250.14.1, 01:12:11, Ethernet0

O E2 200.200.0.0 255.255.0.0 [110/2000] via 203.250.14.1, 00:03:47,

Ethernet0

O*E2 0.0.0.0 0.0.0.0 [110/1000] via 203.250.15.2, 00:03:33, Serial1

Note RTF’s routing table which indicates that networks local to

AS300 such as 192.208.10.0 are to be reached via RTB. Other known

networks such as 200.200.0.0 are to be reached via RTA. The

gateway of last resort is set to RTB. In case something

happens to the connection between RTB and RTD, then the default

advertised by RTA will kick in with a metric of 2000.

RTB#sh ip bgp

BGP table version is 14, local router ID is 203.250.15.10

Status codes: s suppressed, d damped, h history, * valid, > best, i -

internal

Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path

*>i128.213.0.0 128.213.63.2 0 200 0 200 i

*> 192.208.10.0 192.208.10.5 0 300 0 300 i

*>i200.200.0.0/16 128.213.63.2 200 0 200 400 i

*>i203.250.13.0 203.250.13.41 0 100 0 i

*>i203.250.14.0 203.250.13.41 0 100 0 i

*> 203.250.15.0 0.0.0.0 0 32768 i

RTB#sh ip rou

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * -

candidate default

Gateway of last resort is 192.208.10.5 to network 192.208.10.0

* 192.208.10.0 is variably subnetted, 2 subnets, 2 masks

B* 192.208.10.0 255.255.255.0 [20/0] via 192.208.10.5, 00:50:46

C 192.208.10.4 255.255.255.252 is directly connected, Serial1