Configure BGP

Enable BGP so that BGP runs on the router. Configure general BGP parameters to define how BGP operates on the system.

Before you begin

Change the VRF instance as required to configure BGP on a specific VRF instance. The VRF must have an RP trigger of BGP.

Procedure

In the navigation pane, expand Configuration > IP.
Click BGP.
Click the Generals tab.
In AdminStatus, select enable.
Configure the local autonomous system (AS) ID.
In the Aggregate area, enable or disable route aggregation as required.
Configure the BGP options as required.
In the DebugMask area, select the check box for the type of information to show for BGP debugging purposes.
Configure BGP confederations as required.
Configure BGP route reflectors as required.
Click Apply.

Generals Field Descriptions

Use the data in the following table to use the Generals tab.


Name	Description
bgpVersion	Specifies the version of BGP that operates on the router. Note: This parameter only applies to VRF 0.
Identifier	Specifies the BGP router ID number.
AdminStatus	Enables or disables BGP on the router. The default is disable. You cannot enable AdminStatus until you change the LocalAS value to a nonzero value.
4ByteAs	Enables or disables 4–byte AS numbers. The default is disable. Note: This parameter only applies to VRF 0.
LocalAs	Configures the local AS number in the range of 0–65535. You cannot change the LocalAs value if AdminStatus is enable. Note: If the inserted LocalAs is 0, then the LocalAs in that VRFcontext loses its significance and it becomes the LocalAs configured in GlobalRouter (the equivalence to CLI commands ip bgp vrf-as 0 and no ip bgp vrf-as or default ip bgp vrf-as).
AsDot	Enables or disable the AS dot notation format for the 4–byte AS number. The default is disable. The AS dot notation is easier to read and remember than the AS plain notation, but it can be difficult to convert from AS plain to AS dot. The IETF prefers the AS plain notation. Note: This parameter only applies to VRF 0.
Aggregate	Enables or disables aggregation. The default is enable.
DefaultMetric	Configures the metric sent to BGP neighbors. The default metric determines the cost of a route a neighbor uses. Use this parameter in conjunction with the redistribute parameters so that BGP uses the same metric for all redistributed routes. The default is -1. The range is -1–2147483647.
DefaultLocalPreference	Specifies the default local preference. The local preference indicates the preference that AS border routers assign to a chosen route when they advertise it to iBGP peers. The default is 100. The range is 0–2147483647.
AlwaysCompareMed	Enables or disables the comparison of the multi-exit discriminator (MED) parameter for paths from neighbors in different autonomous systems. The system prefers a path with a lower MED over a path with a higher MED. The default is disable.
DeterministicMed	Enables or disables deterministic MED. Deterministic MED compares the MEDs after routes advertised by different peers in the same AS are chosen. The default is disable.
AutoPeerRestart	Enables or disables the process that automatically restarts a connection to a BGP neighbor. The default is enable.
AutoSummary	Enables or disables automatic summarization. If you enable this varialble, BGP summarizes networks based on class limits (for example, Class A, B, or C networks). The default is enable.
NoMedPathIsWorst	Enables or disables NoMedPathIsWorst. If you enable this variable, BGP treats an update without a MED attribute as the worst path. The default is enabled.
BestPathMedConfed	Enables or disables the comparison of MED attributes within a confederation. The default is disable.
DebugMask	Displays the specified debug information for BGP global configurations. The default value is none. Other options are none disables all debug messages. event enables the display of debug event messages. state enables display of debug state transition messages. update enables display of debug messages related to updates transmission and reception. error enables the display of debug error messages. trace enables the display of debug trace messages. init enables the display of debug initialization messages. all enables all debug messages. packet enables the display of debug packet messages. warning enables the display of debug warning messages. filter enables the display of debug messages related to filtering.
IgnoreIllegalRouterId	Enables BGP to overlook an illegal router ID. For example, this variable enables the acceptance of a connection from a peer that sends an open message using a router ID of 0. The default is enable.
Synchronization	Enables or disables the router to accept routes from BGP peers without waiting for an update from the IGP. The default is enable.
MaxEqualcostRoutes	Configures the maximum number of equal-cost-paths that are available to a BGP router by limiting the number of equal-cost-paths the routing table can store. The default value is 1; the range is 1–8.
IbgpReportImportRoute	Configures BGP to report imported routes to an interior BGP (iBGP) peer. This variable also enables or disables reporting of non-BGP imported routes to other iBGP neighbors. The default is enable.
FlapDampEnable	Enables or disables route suppression for routes that go up and down (flap). The default is disable.
QuickStart	Enables or disables the Quick Start feature, which forces the BGP speaker to begin establishing peers immediately, instead of waiting for the auto-restart timer to expire. The default is disable.
TrapEnable	Enables or disables the BGP traps. The default is disable.
ConfederationASIdentifier	Specifies a BGP confederation identifier in the range of 0–65535. Note: This parameter applies only to VRF 0.
ConfederationPeers	Lists adjoining autonomous systems that are part of the confederation in the format (5500,65535,0,10,...,...).. This value can use 0–255 characters. Note: This parameter applies only to VRF 0.
RouteReflectionEnable	Enables or disables the reflection of routes from iBGP neighbors. The default is enable. Note: This parameter applies only to VRF 0.
RouteReflectorClusterId	Configures a reflector cluster ID IP address. This variable applies only if you enable RouteReflectionEnable, and if multiple route reflectors are in a cluster. Note: This parameter applies only to VRF 0.
ReflectorClientToClientReflection	Enables or disables route reflection between two route reflector clients. This variable applies only if RouteReflectionEnable is enable. The default is enable. Note: This parameter applies only to VRF 0.
RouteRefresh	Enables or disables route refresh. If enabled, a route refresh request received by a BGP speaker causes the speaker to resend all route updates it contains in its database that are eligible for the peer that issues the request. Note: This parameter only applies to VRF 0.