BGP configuration task list

On a basic BGP network, perform the following configuration tasks:

Enable BGP.
Configure BGP peers or peer groups. If you configure a BGP setting at both the peer group and the peer level, the most recent configuration takes effect on the peer.
Control BGP route generation.

To control BGP route distribution and path selection, you must perform additional configuration tasks.

To configure BGP, perform the following tasks (IPv4 unicast/IPv4 multicast):

Tasks at a glance	Remarks
Configuring basic BGP: (Required.) Enabling BGP (Required.) Perform one of the following tasks: Configuring a BGP peer Configuring dynamic BGP peers Configuring a BGP peer group (Optional.) Specifying the source address of TCP connections	As a best practice, configure BGP peer groups on large scale BGP networks for easy configuration and maintenance.
Perform at least one of the following tasks to generate BGP routes: Injecting a local network Redistributing IGP routes	N/A
(Optional.) Controlling route distribution and reception: Configuring BGP route summarization Advertising optimal routes in the IP routing table Advertising a default route to a peer or peer group Configuring BGP to first send updates of the default route Limiting routes received from a peer or peer group Configuring BGP route filtering policies Setting the BGP route sending rate Configuring BGP route update delay Configuring a startup policy for BGP route updates Configuring BGP route dampening	BGP cannot advertise optimal routes in the IP routing table for IPv4 multicast address family.
(Optional.) Controlling BGP path selection: Setting a preferred value for routes received Configuring preferences for BGP routes Configuring the default local preference Configuring the MED attribute Configuring the NEXT_HOP attribute Configuring the AS_PATH attribute Ignoring IGP metrics during optimal route selection Configuring the SoO attribute	N/A
(Optional.) Tuning and optimizing BGP networks: Configuring the keepalive interval and hold time Setting the session retry timer Configuring the interval for sending updates for the same route Enabling BGP to establish an EBGP session over multiple hops Enabling immediate re-establishment of direct EBGP connections upon link failure Enabling BGP ORF capabilities Enabling 4-byte AS number suppression Enabling MD5 authentication for BGP peers Enabling keychain authentication for BGP peers Configuring BGP load balancing Configuring IPsec for IPv6 BGP Disabling BGP to establish a session to a peer or peer group Configuring GTSM for BGP Configuring BGP soft-reset Protecting an EBGP peer when memory usage reaches level 2 threshold Configuring an update delay for local MPLS labels Flushing the suboptimal BGP route to the RIB Setting a DSCP value for outgoing BGP packets Disabling route recursion policy control for routes received from a peer or peer group Enabling per-prefix label allocation Disabling optimal route selection for labeled routes without tunnel information	N/A
(Optional.) Configuring a large-scale BGP network: Configuring BGP community Configuring BGP route reflection Configuring a BGP confederation	N/A
(Optional.) Configuring BGP GR	N/A
(Optional.) Configuring BGP NSR	N/A
(Optional.) Enabling SNMP notifications for BGP	N/A
(Optional.) Enabling logging for session state changes	N/A
(Optional.) Enabling logging for BGP route flapping	N/A
(Optional.) Configuring BFD for BGP	N/A
(Optional.) Configuring BGP FRR	BGP does not support FRR for IPv4 multicast routes.
(Optional.) Configuring 6PE	N/A
(Optional.) Configuring BGP LS	N/A
(Optional.) Configuring BMP	N/A

To configure BGP, perform the following tasks (IPv6 unicast/IPv6 multicast):

Tasks at a glance	Remarks
Configuring basic BGP: (Required.) Enabling BGP (Required.) Perform one of the following tasks: Configuring a BGP peer Configuring dynamic BGP peers Configuring a BGP peer group (Optional.) Specifying the source address of TCP connections	As a best practice, configure BGP peer groups on large scale BGP networks for easy configuration and maintenance.
Perform at least one of the following tasks to generate BGP routes: Injecting a local network Redistributing IGP routes	N/A
(Optional.) Controlling route distribution and reception: Configuring BGP route summarization Advertising optimal routes in the IP routing table Advertising a default route to a peer or peer group Configuring BGP to first send updates of the default route Limiting routes received from a peer or peer group Configuring BGP route filtering policies Setting the BGP route sending rate Configuring BGP route update delay Configuring a startup policy for BGP route updates Configuring BGP route dampening	BGP cannot advertise optimal routes in the IP routing table for IPv6 multicast address family.
(Optional.) Controlling BGP path selection: Setting a preferred value for routes received Configuring preferences for BGP routes Configuring the default local preference Configuring the MED attribute Configuring the NEXT_HOP attribute Configuring the AS_PATH attribute Configuring the SoO attribute	N/A
(Optional.) Tuning and optimizing BGP networks: Configuring the keepalive interval and hold time Setting the session retry timer Configuring the interval for sending updates for the same route Enabling BGP to establish an EBGP session over multiple hops Enabling immediate re-establishment of direct EBGP connections upon link failure Enabling BGP ORF capabilities Enabling 4-byte AS number suppression Enabling MD5 authentication for BGP peers Enabling keychain authentication for BGP peers Configuring BGP load balancing Configuring IPsec for IPv6 BGP Disabling BGP to establish a session to a peer or peer group Configuring GTSM for BGP Configuring BGP soft-reset Protecting an EBGP peer when memory usage reaches level 2 threshold Configuring an update delay for local MPLS labels Flushing the suboptimal BGP route to the RIB Setting a DSCP value for outgoing BGP packets Disabling route recursion policy control for routes received from a peer or peer group Enabling per-prefix label allocation Disabling optimal route selection for labeled routes without tunnel information	N/A
(Optional.) Configuring a large-scale BGP network: Configuring BGP community Configuring BGP route reflection Configuring a BGP confederation	N/A
(Optional.) Configuring BGP GR	N/A
(Optional.) Configuring BGP NSR	N/A
(Optional.) Enabling SNMP notifications for BGP	N/A
(Optional.) Enabling logging for session state changes	N/A
(Optional.) Enabling logging for BGP route flapping	N/A
(Optional.) Configuring BFD for BGP	N/A
(Optional.) Configuring BGP FRR	BGP does not support FRR for IPv6 multicast routes.
(Optional.) Configuring 6PE	IPv6 multicast does not support 6PE.
(Optional.) Configuring BGP LS	N/A

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