# Monitoring BGP

This chapter describes the commands you can use to monitor and troubleshoot Border Gateway Protocol (BGP) on E Series routers.

| Note: The E120 router and E320 router output for monitor and show commands is identical to output from other E Series routers, except that the E120 and E320 router output also includes information about the adapter identifier in the interface specifier (slot/adapter/port).

This chapter contains the following sections:

- Setting a Baseline on All BGP Statistics
- Enabling Display of BGP Logs
- Setting the Default Output Fields While Displaying Summarized Status of BGP Neighbors
- Setting the Default BGP Routing Table Output Fields
- Monitoring AS-Path Access Lists
- Monitoring the BGP Routing Table
- Monitoring Advertised BGP Routes
- Monitoring BGP Aggregate Addresses
- Monitoring BGP Routes with Nonnatural Network Masks
- Monitoring BGP Routes in a Community
- Monitoring BGP Community Routes in the Community List
- Monitoring Dampened BGP Routes
- Monitoring BGP Routes with Matching AS Paths and AS-Path Access Lists
- Monitoring BGP Flap Statistics
- Monitoring BGP Routes with Inconsistent AS Paths
- Monitoring BGP Neighbors
- Monitoring Dampened BGP Routes of Specified Neighbors
- Monitoring BGP Paths of Neighbors
- Monitoring Prefix List Outbound Route Filters Received from the BGP Neighbor
- Monitoring Routes Originating from a BGP Neighbor Before Application of Inbound Policy
- Monitoring Routes Originating from a BGP Neighbor After Application of Inbound Policy
- Monitoring Networks in an Autonomous System
- Monitoring BGP Next Hops
- Monitoring BGP Paths
- Monitoring BGP Peer Groups
- Monitoring BGP Routes with Matching AS-Paths and Regular Expressions for Single Regular Expressions
- Monitoring BGP Routes with Matching AS-Paths and Regular Expressions for Multiple Regular Expressions
- Monitoring the Status of All BGP Neighbors
- Monitoring All Routes in a BGP Community List
- Disabling Display of BGP Logs