3Com Switch 7700 Configuration Manual page 126

118 C 5: IP R
HAPTER OUTING
P O
ROTOCOL PERATION
By default, summarization of imported routes is disabled.
After the summarization of imported routes is configured, if the local router is an
autonomous system border router (ASBR), this command summarizes the
imported Type-5 LSAs in the summary address range. When NSSA is configured,
this command also summarizes the imported Type-7 LSA in the summary address
range.
If the local router works as an ABR and a router in the NSSA, this command
summarizes Type-5 LSAs transformed from Type-7 LSAs. If the router is not the
router in the NSSA, the summarization is disabled.
Configuring the OSPF Area to Support Packet Authentication
All the routers in an area should use the same authentication type. All the routers
on the same segment should use the same authentication-key password. Use the
authentication-mode simple command to configure the simple authentication
password for the area and the authentication-mode md5 command to
configure the MD5 authentication-key password.
Perform the following configuration in OSPF Area view.
Table 41 Configuring the OSPF Area to Support Packet Authentication
Operation
Configure the area to support authentication
type
Cancel the configured authentication key
By default, the area does not support packet authentication.
Configuring OSPF Packet Authentication
OSPF supports simple authentication or MD5 authentication between neighboring
routers.
Perform the following configuration in VLAN interface view.
Table 42 Configuring OSPF Packet Authentication
Operation
Enable the interface to use simple
authentication
Disable simple authentication on the interface undo ospf authentication-mode simple
Enable the interface to use MD5
authentication
Disable the use of MD5 authentication on the
interface
By default, the interface is not configured with either simple authentication or
MD5 authentication.
Configuring OSPF to Import the Routes of Other Protocols
The dynamic routing protocols on the router can share the routing information. As
far as OSPF is concerned, the routes discovered by other routing protocols are
always processed as the external routes of AS. In the import-route commands,
Command
authentication-mode [ simple | md5 ]
undo authentication-mode
Command
ospf authentication-mode simple
password
ospf authentication-mode md5 key_id key
undo ospf authentication-mode md5