Shulou(Shulou.com)06/01 Report--

Routing Encapsulation Protocol GRE experiment

GRE (Generic Routing Encapsulation), a general routing encapsulation protocol, encapsulates datagrams from some network layer protocols, such as IP and IPX, so that these encapsulated datagrams can be transmitted in another network layer protocol, such as IP.

I. Experimental Topology

Two. Settin

R1:

InterfaceFastEthernet0/0

Ip address61.130.130.1 255.255.255.252

InterfaceFastEthernet0/1

Ip address192.168.1.254 255.255.255.0

Interface Tunnel10

Ip address192.168.4.1 255.255.255.0

Tunnel sourceFastEthernet0/0

Tunnel destination61.130.132.1

Ip classless

Ip route 0.0.0.00.0.0.0 61.130.130.2

Ip route192.168.2.0 255.255.255.0 192.168.4.2

R2:

Interface FastEthernet0/0

Ip address61.130.130.2 255.255.255.252

InterfaceFastEthernet0/1

Ip address 61.130.132.2255.255.255.252

R3:

Interface FastEthernet0/0

Ip address 61.130.132.1 255.255.255.252

Interface FastEthernet0/1

Ip address 192.168.2.254 255.255.255.0

Interface Tunnel20

Ip address 192.168.4.2 255.255.255.0

Tunnel source FastEthernet0/0

Tunnel destination 61.130.130.1

Ip classless

Ip route 0.0.0.0 0.0.0.0 61.130.132.2

Ip route 192.168.1.0 255.255.255.0192.168.4.1

three。 Examination result

R1:

1. View the routing table:

R1#show ip route

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

Gateway of last resort is 61.130.130.2 tonetwork 0.0.0.0

61.0.0.0/30 is subnetted, 1 subnets

C 61.130.130.0 is directly connected, FastEthernet0/0

C 192.168.1.0/24 is directly connected, FastEthernet0/1

S 192.168.2.0/24 [1/0] via 192.168.4.2

C 192.168.4.0/24 is directly connected, Tunnel10

S* 0.0.0.0 via 0 [1Acer 0] 61.130.130.2

two。 View the tunnel interface

R1#show interface tunnel 10

Tunnel10 is up, line protocol is up (connected)

Hardware is Tunnel

Internet address is 192.168.4.1/24

MTU17916 bytes, BW 100 Kbit/sec, DLY 50000 usec

Reliability 255/255, txload 1/255, rxload 1/255

Encapsulation TUNNEL, loopback not set

Keepalive not set

Tunnel source 61.130.130.1 (FastEthernet0/0), destination 61.130.132.1

Tunnel protocol/transport GRE/IP

Key disabled, sequencing disabled

Checksumming of packets disabled

Tunnel TTL 255

Fast tunneling enabled

Tunnel transport MTU 1476 bytes

Tunnel transmit bandwidth 8000 (kbps)

Tunnel receive bandwidth 8000 (kbps)

Last input never, output never, output hang never

Last clearing of "show interface" counters never

Input queue: 0tic75Compact 0 (size/max/drops/flushes); Total output drops: 1

Queueing strategy: fifo

Output queue: 0ap0 (size/max)

5minute input rate 0 bits/sec, 0 packets/sec

5minute output rate 0 bits/sec, 0 packets/sec

26 packets input, 3328 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 input packets with dribble condition detected

42 packets output, 5376 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 unknown protocol drops

0 output buffer failures, 0 output buffers swapped out

four。 Test results:

Pc1:

PC2:

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