Specifications
206 Implementing IBM System Networking 10Gb Ethernet Switches
The area <area index> option is an arbitrary index (0 - 5) used only by the switch. This
index number does not necessarily represent the OSPF area number, though for
configuration simplicity, it should do so where possible. The area index and area ID
configuration is shown in Example 5-49.
Example 5-49 Area index and area-id configuration
AGG-1#configure terminal
Enter configuration commands, one per line. End with Ctrl/Z.
AGG-1(config)#router ospf
AGG-1(config-router-ospf)#area 0 area-id 0.0.0.0
AGG-1(config-router-ospf)#area 0 enable
AGG-1(config-router-ospf)#^Z
AGG-1#
For more details about area-id formats and options, see 5.5, “More information” on
page 238.
4. Configure authentication (optional).
OSPF protocol exchanges can be authenticated so that only trusted routing devices can
participate. This situation ensures less processing on routing devices that are not listening
to OSPF packets. OSPF allows packet authentication and uses IP multicast when sending
and receiving packets. Routers participate in routing domains based on predefined
passwords. IBM Networking OS supports simple password (type 1 plain text passwords)
and MD5 cryptographic authentication. This type of authentication allows a password to
be configured per area (Example 5-50).
Run area <index> authentication-type {md5|password} to configure the
authentication type.
We use the MD5 method, so a key must be defined by running message-digest-key
<index> md5-key <key>.
Example 5-50 Authentication configuration
AGG-1(config)#router ospf
AGG-1(config-router-ospf)#area 0 authentication-type md5
AGG-1(config-router-ospf)#message-digest-key 1 md5-key redbk
AGG-1(config-router-ospf)#^Z
AGG-1#
Important: The area option is an arbitrary index used only on the switch and does not
represent the actual OSPF area number. The actual OSPF area number is defined in
the area-id.
Important: This operation is performed for all four Layer 3 switches (AGG-1, AGG-2,
ACC-1, and ACC-2)
Important: This operation is performed for all four Layer 3 switches (AGG-1, AGG-2,
ACC-1, and ACC-2)