Configuration Example - 3Com MSR 50 Series Configuration Manual

718 C 49: T
HAPTER UNNELING
c

Configuration Example

C
ONFIGURATION
To do...
Configure an IPv4 address for
the tunnel interface
Set the tunnel to an IPv4 over
IPv4 tunnel
Configure a source address or
interface for the tunnel
Configure a destination
address for the tunnel
Configure the MTU for the
tunnel interface
CAUTION:
If the addresses of the tunnel interfaces at the two ends of a tunnel are not in
■
the same subnet, a forwarding route through the tunnel to the peer must be
configured so that the encapsulated packet can be forwarded normally. You
can configure static or dynamic routes. For the detailed configuration, refer to
"Static Routing and Dynamic Routing" on page
Two or more tunnel interfaces using the same encapsulation protocol must
■
have different source and destination addresses.
If the tunnel interface is the source interface, the source address is the primary
■
IP address of the source interface.
Before configuring dynamic routes, you must enable the dynamic routing
■
protocol on the tunnel interfaces at both ends of the tunnel. Such a route must
be configured at both ends of the tunnel. For related configurations, refer to
related contents in
Network requirements
The two subnets Group 1 and Group 2 running IPv4 are interconnected via an IPv4
over IPv4 tunnel between Router A and Router B.
Use the command...
ip address ip-address { mask |
mask-length } [ sub ]
tunnel-protocol ipv4-ipv4
source { ip-address |
interface-type
interface-number }
destination ip-address
mtu mtu-size
"Static Routing and Dynamic Routing" on page
Remarks
Required
By default, no IPv4 address is
configured for the tunnel
interface.
Optional
By default, the tunnel is a GRE
tunnel. The same tunnel type
should be configured at both
ends of the tunnel. Otherwise,
packet delivery will fail.
Required
By default, no source address
or interface is configured for
the tunnel.
Required
By default, no destination
address is configured for the
tunnel.
Optional
The default value varies with
devices.
817.
817.