BGP vs MBGP – IP With Ease

BGP vs MGP

At present BGP is operating in model 4, which has been revealed in 2006 (RFC 4271). By default, BGPv4 solely helps IPv4 unicast prefixes, However BGP can do far more than carrying IPv4 prefixes solely. RFC 4760 Multiprotocol extensions for BGPv4 has been developed to be able to improve the capability of carrying routing associated data apart from carrying ipv4 solely.

Multiprotocol Extensions for BGPv4 added some new attributes.

• Multiprotocol Reachable NLRI (MP_REACH_NLRI): It carry set of reachable vacation spot with next-hop data.
• Multiprotocol Unreachable NLRI (MP_UNREACH_NLRI): It carry set of unreachable locations.

Observe : – “MP_REACH_NLRI” and “MP_UNREACH_NLRI” are non-obligatory and Non-transitive attribute, due to this if neighbor doesn’t help the multiprotocol capabilities, it would simply ignore data carried in these attributes and won’t cross it to different BGP neighbor.

Each “MP_REACH_NLRI” and “MP_UNREACH_NLRI” incorporates two fields.

• Deal with household identifier (AFI): use for identifies tackle sorts.

• Subsequent tackle household identifier (SAFI): Use for present additional tackle household data.

Instance to verify MBGP SAFI sorts

Multiprotocol BGP tackle household sorts

• Unicast: – IPv4, IPv6
• Multicast: – IPv4, IPv6
• Virtualization: – VPNv4, VPNv6, L2VPN, VPLS, MCAST-VPN, MDT, Encapsulation, Tunnel, 4over6, 6over4.

MBGP configuration Instance

Step 1: – First outline tackle household beneath BGP configuration.

Step 2: – Activate neighbor session.

Step 3: – Configure insurance policies and networks.

Instance of IPv4 unicast tackle household

Step 4: – exit tackle household configuration.