Learning by Doing: CISCO Certified Network ... - SCN Research

Do a trace route between the three. You should see:
terminus#traceroute 12.0.0.1
Type escape sequence to abort.
Tracing the route to 12.0.0.1
1 200.200.200.2 16 msec 16 msec 16 msec
2 201.200.200.2 32 msec 32 msec *
Let’s also look at our ip route:
terminus#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
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, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
200.200.200.0/24 is variably subnetted, 2 subnets, 2 masks
C 200.200.200.0/24 is directly connected, Serial0/0
C 200.200.200.2/32 is directly connected, Serial0/0
D 201.200.200.0/24 [90/21024000] via 200.200.200.2, 00:02:23, Serial0/0
C 10.0.0.0/8 is directly connected, Loopback0
D 11.0.0.0/8 [90/20640000] via 200.200.200.2, 00:02:23, Serial0/0
D 12.0.0.0/8 [90/21152000] via 200.200.200.2, 00:02:23, Serial0/0
terminus#
6. To change the encapsulation back we would just reverse the process and use
HDLC:
terminus(config)#int s0/0
terminus(config-if)#enc hdlc
7. You can change all serial interfaces to PPP for its encapsulation and it should
work just fine. Remember: it’s got to be the same on both ends to work.
Challenge Lab or Supplemental Activities:
1. Go to the web and find out for what all those other encapsulation types are
primarily used.
2. Can SDLC-primary on one end of a serial line communicate with SDLCsecondary
on the other end?
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