Router Configuration & lt; 11 & gt;

Wan protocol encapsulation

Target:

Measure the test taker's knowledge about the encapsulation types and methods of Wan protocols.

Tutorial principle:

Common Wan leased line technologies include ddnleased line, PSTN/ISDN leased line, Frame Relay leased line, and X.25 leased line. The data link layer provides various leased line protocols, including PPP, HDLC, X.25, Frame-relay, and ATM.

Experiment topology:

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Step:

Step 1: Basic vro configurations

Router A (config) # interface serial 4/0

Router A (config-if) # ip address 172.16.2.1 255.255.255.0

Router B (config) # interface serial 4/0

Router B (config-if) # ip address 172.16.2.2 255.255.255.0

Step 2: encapsulate HDLC

Router A (config) # interface serial 4/0

Router A (config-if) # encapsulation hdlc

Router B (config) # interface serial 4/0

Router B (config-if) # encapsulation hdlc

Verify the encapsulation type of the WAN interface:

Router A # show interfaces serial 4/0

Index (dec): 1 (hex): 1

Serial 4/0 is UP, line protocol is UP

Hardware is Infineon DSCC4 PEB20534 H-10 serial

Interface address is: 172.16.2.2/24

MTU 1500 bytes, BW 2000 Kbit

Encapsulation protocol is HDLC, loopback not set

Keepalive interval is 10 sec, set

Carrier delay is 2 sec

RXload is 1, Txload is 1

Queueing strategy: WFQ

11421118 carrier transitions

V35 DTE cable

DCD = up DSR = up DTR = up RTS = up CTS = up

5 minutes input rate 17 bits/sec, 0 packets/sec

5 minutes output rate 17 bits/sec, 0 packets/sec

57 packets input, 1664 bytes, 0 no buffer, 0 dropped

Received 52 broadcasts, 0 runts, 0 giants

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 abort

68 packets output, 2726 bytes, 0 underruns, 0 dropped

0 output errors, 0 collisions, 0 interface resets

Note: The WAN interface of the ruijie router is encapsulated by HDLC by default.

Step 3: encapsulate PPP

Router A # configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router A (config) # interface serial 4/0

Router A (config-if) # encapsulation ppp

Router B # configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router B (config) # interface serial 4/0

Router B (config-if) # encapsulation ppp

Verify the encapsulation type of the WAN interface:

Router A # show interfaces serial 4/0

Index (dec): 1 (hex): 1

Serial 4/0 is UP, line protocol is UP

Hardware is Infineon DSCC4 PEB20534 H-10 serial

Interface address is: 172.16.2.1/24

MTU 1500 bytes, BW 2000 Kbit

Encapsulation protocol is PPP, loopback not set

Keepalive interval is 10 sec, set

Carrier delay is 2 sec

RXload is 1, Txload is 1

LCP Open

Open: ipcp

Queueing strategy: WFQ

11421118 carrier transitions

V35 DCE cable

DCD = up DSR = up DTR = up RTS = up CTS = up

5 minutes input rate 30 bits/sec, 0 packets/sec

5 minutes output rate 19 bits/sec, 0 packets/sec

123 packets input, 3638 bytes, 0 no buffer, 28 dropped

Received 68 broadcasts, 0 runts, 0 giants

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 abort

89 packages output, 2312 bytes, 0 underruns, 0 dropped

0 output errors, 0 collisions, 7 interface resets

Note]

When the WAN protocol is encapsulated, the two port encapsulation protocols of the V.35 cable must be consistent. Otherwise, a link cannot be established.

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