HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Configuration Gu - Page 141

Step 3. Enable the logging of neighbor state changes. Command log-peer-change Remarks By default, the logging of neighbor state is enabled. Enabling IS-IS ISPF When the network topology changes, Incremental Shortest Path First (ISPF) computes only the affected part of the SPT, instead of the entire SPT. To enable IS-IS ISPF: Step 1. Enter system view. 2. Enter IS-IS view. 3. Enable IS-IS ISPF. Command Remarks system-view N/A isis [ process-id ] [ vpn-instance vpn-instance-name ] N/A ispf enable By default, IS-IS is disabled. Enhancing IS-IS network security To enhance the security of an IS-IS network, you can configure IS-IS authentication. IS-IS authentication involves neighbor relationship authentication, area authentication, and routing domain authentication. Configuration prerequisites Before the configuration, complete the following tasks: • Configure IP addresses for interfaces to ensure IP connectivity between neighboring nodes. • Enable IS-IS. Configuring neighbor relationship authentication With neighbor relationship authentication configured, an interface adds the password in the specified mode into hello packets to the peer and checks the password in the received hello packets. If the authentication succeeds, it forms the neighbor relationship with the peer. The authentication mode and password at both ends must be identical. To configure neighbor relationship authentication: Step 1. Enter system view. 2. Enter interface view. Command system-view interface interface-type interface-number Remarks N/A N/A 130