Configuring BGP Global Settings in Gaia Portal

From the left navigation tree, click Advanced Routing > BGP.
In the BGP Global Settings section, click Change Global Settings.
Configure the Router ID.
Configure the Autonomous System settings.
Click Save

Description of fields in the "Router ID and Cluster ID" section

Parameter

Description

Router ID

The Router ID uniquely identifies the router in the autonomous system.

The BGP and OSPF protocols use the router ID.

Best Practice - Set the Router ID rather than rely on the default setting. This prevents changes in the Router ID if the interface used for the router ID goes down. Use an address on a loopback interface that is not the loopback address 127.0.0.1 (configure an additional Loopback interface and assign an IP address to it from 127.0.0.x / 24 subnet - see the R81 Gaia Administration Guide).

Note - In a cluster Two or more Security Gateways that work together in a redundant configuration - High Availability, or Load Sharing., you must select a router ID and make sure that it is the same on all cluster members.

Range: Dotted-quad.([0-255].[0-255].[0-255].[0-255]). Do not use 0.0.0.0

Default: The interface address of one of the local interfaces.

Cluster ID for Route Reflectors

The cluster ID used for route reflection.

The default cluster ID is the router ID.

You must override this default value if the cluster contains more than one route reflector.

Typically, a single router acts as the reflector for a set, or cluster, of clients. However, for redundancy two or more routers can also be configured as reflectors for the same cluster. In this case, you must select a cluster ID to identify all reflectors serving the cluster.

Gratuitous use of multiple redundant reflectors is not advised, for this situation can cause an increase in the memory required to store routes on the redundant reflectors peers.

Range: Dotted-quad ([0-255].[0-255].[0-255].[0-255])

Default: The IP address from the Router ID field

Local Autonomous System Number

The local autonomous system number of the router.

Description of fields in the "Autonomous System" section

Parameter

Description

Unconfigured

Local Autonomous System Number

The local autonomous system number of the router.

This setting is mutually exclusive from the Confederation and Routing Domain Identifier.

The router can be configured with either the autonomous system number or the member of confederation, not both.

Warning - When you change the autonomous system number, all current peer sessions are reset and all BGP routes are deleted.

Range: 1-65535

Default: No default

Confederation

The identifier for the entire confederation system.

This identifier is used as the AS in external BGP sessions.

To the outside world, the confederation ID is the AS number of the single, large AS.

For this reason, the confederation ID must be a globally unique, normally assigned AS number.

Range: 1-65535

Default: No default

Number of loops permitted in AS_PATH

For the confederation: The number of times the local autonomous system can appear in an AS path for routes learned through BGP.

If the number of times the local autonomous system appears in an AS path is more than the number in this field, the corresponding routes are discarded or rejected.

Range: 1-10

Default: 1

Routing Domain Identifier

The Routing Domain Identifier (RDI) of this router.

This value is required only if BGP confederations are in use.

The RDI does not have to be globally unique since it is never used outside the domain of the confederation system. However, the configured RDI must be unique within the confederation.

The routing-domain identifier and autonomous system number are mutually exclusive values. Meaning, the router can be configured with either the autonomous system number or the member of confederation, not both.

If confederations are in use, the RDI is used wherever the autonomous system would be used to communicate with peers within the confederation, including group-type confederation peers and the various internal-type peers.

For correct operation of the router in confederations you must configure both the routing-domain identifier and the confederation.

Range: 1-65535

Default: No default

Number of loops permitted in AS_PATH

For the routing domain identifier: The number of times the local autonomous system can appear in an AS path for routes learned through BGP.

If the number of times the local autonomous system appears in an AS path is more than the number in this field, the corresponding routes are discarded or rejected.

Range: 1-10

Default: 1