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

You should see:
Router(config-if)#enc ?
Atm-dxi
ATM-DXI encapsulation
bstun
Block Serial tunneling (BSTUN)
frame-relay Frame Relay networks
hdlc
Serial HDLC synchronous
lapb LAPB (X.25 Level 2)
ppp
Point-to-Point protocol
sdlc
SDLC
sdlc-primary SDLC (primary)
sdlc-secondary SDLC (secondary)
smds
Switched Megabit Data Service (SMDS)
stun
Serial Tunneling (STUN)
x25 X.25
Encapsulations on serial lines are easy. What you have set on one end, you must have the
same set on the other otherwise no communication can take place.
Step-By-Step Instructions:
1. Set up the lab and cable it as shown. Use EIGRP as your routing protocol.
Use the same autonomous number for each network.
2. Ping from the router prompt of Terminus to Leftist and then to Urvile. It
should work jiffy spiffy-like. Do a trace route between them.
3. Now change the encapsulation on Terminus S0/0 to PPP:
terminus(config)#int s0/0
terminus(config-if)#enc ppp
4. Ping from the router prompt of Terminus to Leftist and then from Terminus to
Urvile (loopback). It should not work so jiffy spiffy-like. You should see:
terminus#ping 200.200.200.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 200.200.200.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Do a trace route between them. You should not get anywhere because the
encapsulation types have to be the same on both ends in order to communicate.
Then change the encapsulation on S0/1 of leftist. Let’s change the encapsulation
type on s0/1 on leftist. Verify your encapsulation with “show interface.” You
should see:
Serial0/0 is up, line protocol is up
Hardware is PowerQUICC Serial
Internet address is 200.200.200.1/24
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