Displaying And Maintaining Gre; Gre Configuration Examples; Configuring An Ipv4 Over Ipv4 Gre Tunnel - HPE FlexNetwork MSR Series Comware 7 Layer 3 - Ip Services Configuration Manuals

Step
9. (Optional.) Configure the
device to discard IPv6
packets with IPv4-compatible
IPv6 addresses

Displaying and maintaining GRE

Execute display commands in any view and reset commands in user view.
Task
Display information about
tunnel interfaces.
Display IPv6 information
about tunnel interface.
Clear tunnel interface
statistics.

GRE configuration examples

Configuring an IPv4 over IPv4 GRE tunnel

Network requirements
As shown in
use private network addresses and belong to the same VPN. Establish a GRE tunnel between
Router A and Router B to interconnect the two private IPv4 networks Group 1 and Group 2.
Figure 139 Network diagram
Configuration procedure
Before performing the following configuration, configure an IP address for each interface, and make
sure Router A and Router B can reach each other.
1. Configure Router A:
# Create a tunnel interface Tunnel 0, and specify the tunnel mode as GRE/IPv4.
<RouterA> system-view
[RouterA] interface tunnel 0 mode gre
# Configure an IP address for the tunnel interface.
Command
display interface [ tunnel
[ number ] ] [ brief [ description |
down ] ]
display ipv6 interface [ tunnel
[ number ] ] [ brief ]
reset counters interface [ tunnel
[ number ] ]
Figure 139, Group 1 and Group 2 are two private IPv4 networks. The two networks both
Command
tunnel discard
ipv4-compatible-packet
351
Remarks
By default, the device does not
discard such IPv6 packets.
Remarks
For more information about the
commands, see Layer 3—IP
Services Command Reference.
For more information about this
command, see Layer 3—IP
Services Command Reference.
For more information about this
command, see Layer 3—IP
Services Command Reference.