RouterA#sh run int Lo0 Building configuration... Current configuration : 101 bytes ! interface Loopback0 description Management /32 ip address 172.16.1.130 255.255.255.255 end RouterA#show int Tunnel1 Tunnel1 is up, line protocol is down Hardware is Tunnel Description: GRE Tunnel RouterA <--> RouterB Internet address is 192.168.1.1/30 MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (10 sec), retries 3 Tunnel source 172.16.1.130, destination 172.16.128.35 Tunnel protocol/transport GRE/IP Key disabled, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input 13:53:33, output 00:00:03, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 10 packets input, 1240 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 599993 packets output, 110324456 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out RouterA#show run int Tunnel1 Building configuration... Current configuration : 198 bytes ! interface Tunnel1 description GRE Tunnel RouterA <--> RouterB ip address 192.168.1.1 255.255.255.252 keepalive 10 3 tunnel source 172.16.1.130 tunnel destination 172.16.128.35 end RouterA#