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User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform
Chapter 3
Configuration of GRE
3-7
1) Show the status of designated tunnel interface.
Quidway# show interface tunnel 1
Tunnel1 is up, line protocol is up
Internet address is 3.1.1.1 255.255.255.0
10 packets input, 640 bytes
0 input errors, 0 broadcast, 0 drops
10 packets output, 640 bytes
0 output errors, 0 broadcast, 0 no protocol
The above information means that: The network address of “Tunnel1” is 3.1.1.1. 0
message is received. The number of received error message and broadcast message
is 0. There is no discarded message. The number of transmitted messages is 0. There
is no the message with error output, the broadcast message and the message with
unknown protocol type
2) Show router table of the system.
Quidway(config)# show ip route
Routing Tables:
Destination/Mask Proto Pref Metric Nexthop Interface
3.1.1.0/24 Direct 0 0 3.1.1.1 Tunnel1
10.10.1.0/24 Direct 0 0 10.10.1.3 Serial0
10.10.1.3/32 Direct 0 0 10.10.1.3 Serial0
10.110.1.0/24 Direct 0 0 10.110.1.100 Ethernet0
20.20.1.0/24 Static 60 0 10.10.1.3 Serial0
20.110.1.0/24 Static 60 0 3.1.1.2 Tunnel1
The above information shows that the router table of the system includes the route of
the interface
Tunnel1.
3.4 Typical Configuration of GRE
I. Networking requirement
VPN should be built across WAN for the operation of Novell IPX’s two subnets group1
and group2. It can be implemented by using GRE.
II. Networking diagram
IPX protocol
Group1
INTERNET
IPX protocol
Group2
Tunnel
Router A
Router B
Figure VPN-3-6 Networking diagram of GRE application
III. Configuration procedure
Configure router A:
! Activate IPX.
RouterA(config)# ipx routing a.a.a
! Configure interface “Ethernet0”.
RouterA(config)# interface ethernet 0