Nortel 4134 用户指南
Configuring GRE tunnel parameters
185
Configuring checksum for GRE tunnels
Enable end-to-end checksums to force the router to drop any corrupted
packets. You can only configure checksum on GRE tunnels.
packets. You can only configure checksum on GRE tunnels.
By default, checksums are disabled.
Procedure steps
Step
Action
1
To enter configuration mode, enter:
configure terminal
2
To specify the name of the tunnel to configure, enter:
interface tunnel <tunnel-name>
3
To enable or disable checksum for tunnel packets, enter:
[no] tunnel checksum
—End—
Configuring tunnel key for GRE tunnels
Configure an ID key for a tunnel interface. This key must be set to the
same value on the tunnel endpoints. The key field is used for identifying an
individual traffic flow within a tunnel. Tunnel ID keys can be used as a form
of weak security to prevent misconfiguration or injection of packets from a
foreign source. However this is not a reliable security option.
same value on the tunnel endpoints. The key field is used for identifying an
individual traffic flow within a tunnel. Tunnel ID keys can be used as a form
of weak security to prevent misconfiguration or injection of packets from a
foreign source. However this is not a reliable security option.
You can only configure tunnel key on GRE tunnels. By default, no key is
configured.
configured.
Procedure steps
Step
Action
1
To enter configuration mode, enter:
configure terminal
2
To specify the name of the tunnel to configure, enter:
interface tunnel <tunnel-name>
3
To configure tunnel key, enter:
[no] tunnel key <0-4294967295>
—End—
Nortel Secure Router 4134
Security — Configuration and Management
NN47263-600
01.02
Standard
10.0
3 August 2007
Copyright © 2007, Nortel Networks
.