R2511-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V5)

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• If you specify a source interface instead of a source address for a tunnel interface, the source
address of the tunnel is the primary IP address of the source interface.
Configuration procedure
To configure an IPv4 over IPv4 tunnel:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter tunnel interface
view.
interface tunnel number N/A
3. Configure an IPv4
address for the tunnel
interface.
ip address ip-address { mask |
mask-length } [ sub ]
By default, no IPv4 address is
configured for the tunnel interface.
4. Specify the IPv4 over
IPv4 tunnel mode.
tunnel-protocol ipv4-ipv4
The same tunnel mode should be
configured at both ends of the tunnel.
Otherwise, packet delivery fails.
5. Configure a source
address or interface for
the tunnel interface.
source { ip-address | interface-type
interface-number }
By default, no source address or
interface is configured for the tunnel.
6. Configure a destination
address for the tunnel
interface.
destination ip-address
By default, no destination address is
configured for the tunnel.
Configuration example
Network requirements
As shown in Figure 88, the two subnets Group 1 and Group 2 use private IPv4 addresses. Configure an
IPv4 over IPv4 tunnel between Router A and Router B to make the two subnets reachable to each other.
Figure 88 Network diagram
Configuration procedure
Make sure Router A and Router B can reach each other through IPv4.
• Configure Router A: