HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Configuration Gu - Page 78

Configuring default parameters for redistributed routes Perform this task to configure default parameters for redistributed routes, including cost, tag, and type. Tags indicate information about protocols. For example, when redistributing BGP routes, OSPF uses tags to identify AS IDs. To configure the default parameters for redistributed routes: Step 1. Enter system view. Command system-view Remarks N/A 2. Enter OSPF view. ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * N/A 3. Configure the default parameters for redistributed routes (cost, default { cost cost | tag tag | type type } * upper limit, tag, and type). By default, the cost is 1, the tag is 1, and the type is Type-2. Advertising a host route Step 1. Enter system view. 2. Enter OSPF view. 3. Enter area view. 4. Advertise a host route. Command system-view ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * area area-id host-advertise ip-address cost Remarks N/A N/A N/A By default, no host route is advertised. Tuning and optimizing OSPF networks You can use one of the following methods to optimize an OSPF network: • Change OSPF packet timers to adjust the convergence speed and network load. On low-speed links, consider the delay time for sending LSAs. • Change the SPF calculation interval to reduce resource consumption caused by frequent network changes. • Configure OSPF authentication to improve security. Configuration prerequisites Before you configure OSPF network optimization, complete the following tasks: • Configure IP addresses for interfaces to ensure IP connectivity between neighboring nodes. • Enable OSPF. 67