Maintaining BGP

Maintaining BGP involves resetting BGP connections and clearing BGP statistics.

Resetting BGP Connections: Resetting a BGP connection will interrupt peer relationships.

Clearing BGP Statistics: This section describes how to clear the statistics about flapping routes and dampened routes.

Configuring BGP to Record Peer Status Changes and Event Information: After you configure BGP to record peer status changes and event information, BGP logs every peer status change or event.

Disabling the PAF Restriction for the Feature Indicating Whether the Number of Received BGP Routes Exceeds the Upper Limit: You can disable the PAF restriction for the feature indicating whether the number of routes received from all peers in a BGP address family exceeds the upper limit. This configuration allows a device to continue to receive routes even after the number exceeds the upper limit.

Configuring a Mode in Which BGP Path Attributes Are Processed: To enhance reliability, you can configure a special mode in which BGP path attributes are processed.

Setting a Priority That Determines the Disconnection Order of a BGP Peer Relationship If Memory Overload Occurs: You can set a priority that determines the disconnection order of a BGP peer relationship upon memory overload. If the system memory usage exceeds the alarm threshold and the BGP memory usage is excessively high, such configurations allow BGP peer relationships to be disconnected in order of priority. This prevents BGP from exhausting the memory.

Enabling BGP to Discard New Routes If a Memory Exception Occurs: After BGP is enabled to discard new routes, BGP will discard the new routes received from peers in the case of a memory exception on the device.

Configuring Whitelist Session-CAR for BGP: You can configure whitelist session-CAR for BGP to isolate bandwidth resources by session for BGP messages. This configuration prevents bandwidth preemption among BGP sessions in the case of a traffic burst.

Configuring Micro-Isolation CAR for BGP: You can configure micro-isolation CAR for BGP to isolate bandwidth resources by interface or sub-interface for BGP messages used to establish peer relationships.