F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices VPN Configuration Guide-6PW100

20
Last 300 seconds input: 0 bytes/sec, 0 packets/sec
Last 300 seconds output: 0 bytes/sec, 0 packets/sec
10 packets input, 840 bytes
0 input error
10 packets output, 840 bytes
0 output error
[FirewallB] display interface Tunnel 0
Tunnel0 current state: UP
Line protocol current state: UP
Description: Tunnel0 Interface
The Maximum Transmit Unit is 1456
Internet Address is 10.1.2.2/24 Primary
Encapsulation is TUNNEL, service-loopback-group ID not set.
Tunnel source 2001::2:1, destination 2002::1:1
Tunnel protocol/transport GRE/IPv6
GRE key disabled
Checksumming of GRE packets disabled
Output queue : (Urgent queuing : Size/Length/Discards) 0/100/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (FIFO queuing : Size/Length/Discards) 0/75/0
Last clearing of counters: Never
Last 300 seconds input: 0 bytes/sec, 0 packets/sec
Last 300 seconds output: 0 bytes/sec, 0 packets/sec
10 packets input, 840 bytes
0 input error
10 packets output, 840 bytes
0 output error
# From Firewall B, ping the IP address of GigabitEthernet 0/1 on Firewall A.
[FirewallB] ping 10.1.1.1
PING 10.1.1.1: 56 data bytes, press CTRL_C to break
Reply from 10.1.1.1: bytes=56 Sequence=1 ttl=255 time=3 ms
Reply from 10.1.1.1: bytes=56 Sequence=2 ttl=255 time=2 ms
Reply from 10.1.1.1: bytes=56 Sequence=3 ttl=255 time=2 ms
Reply from 10.1.1.1: bytes=56 Sequence=4 ttl=255 time=2 ms
Reply from 10.1.1.1: bytes=56 Sequence=5 ttl=255 time=3 ms
--- 10.1.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 2/2/3 ms
17B
Troubleshooting GRE
The key to configuring GRE is to keep the configurations consistent. Most faults can be located by using
the debugging gre or debugging tunnel command. This section analyzes one type of fault for illustration,
with the scenario shown in
677HFigure 16.