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BGP Peering (Generic System) Primitive

The BGP peering (generic system) primitive creates a BGP peering session with a generic system. The generic system is inherited from Apstra generic system properties, such as loopback and ASN (addressed, link-local peer). This primitive connects to a virtual network (single) or IP link connectivity point primitive.

The following parameters must be configured:

  • IPv4 AFI

  • IPv6 AFI

  • BGP Time to Live (TTL)

    • When you set TTL to 0, nothing is configured and the device defaults are used.

    • When you set TTL to 1, Cisco NX-OS and FRR-based BGP (SONiC) renders disable-connected-check. Otherwise, TTL values render ebgp-multihop on specific BGP neighbors.

  • Single-hop BFD

    • This enables BFD for the BGP peering. Multihop BFD is only supported for Junos, which is activated by default.

  • BGP Password

  • BGP Keep Alive Timer (seconds)

  • BGP Hold Time Timer (seconds)

  • IPv4 Addressing Type (none, addressed)

  • IPv6 Addressing Type (none, (addressed if IPv6 applications are enabled) link local)

  • Local ASN - Configured on a per-peer basis. It allows a router to appear to be a member of a second autonomous system (AS) by prepending a local-as AS number, in addition to its real AS number, announced to its eBGP peer, resulting in an AS path length of two.

  • Neighbor ASN Type (static, dynamic)

  • Peer From (loopback, interface)

  • Peer To (loopback, interface/IP endpoint, interface/shared IP endpoint)

    • Loopback: use this option to peer with the loopback address of a single remote system.

    • Interface/IP endpoint: use this option to peer with the IP address of a single remote system link or routed vlan interface.

    • Interface/Shared IP endpoint: use this option for any scenario where the remote peer IP address is shared across multiple remote systems.

You can connect a routing policy primitive to a BGP peering (generic system).