Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Address Family

Well KInda confused about the use of Address family?

what benefits we can have by using address-family for bgp?

  • WAN Routing and Switching
3 REPLIES
Purple

Re: Address Family

Hi,

You need different address-families to enable BGP to carry information for different types of protocols. For example, if you need to use BGP for IPv6, then you would use the IPv6 address-family. There are other uses for the address-family as well:

- IPv4 multicast routes

- IPv6 unicast/multicast routes

- vpnv4 routes - used for layer 3 VPNs.

Pls do remember to rate posts.

Paresh

Re: Address Family

Hello Kajif,

the main reason the address family was added to BGP was in order to support newer technologies such as MPLS or IPv6.

Have a look at this explanation on CCO:

Cisco BGP Address Family Model

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hirp_c/ch05/brbover.htm#wp1049730

HTH,

GNT

New Member

Re: Address Family

Benefits

Improved SNMP Query Capabilities

The search criteria for SNMP queries for routes that are advertised by individual peers are improved because the peer address is indexed before the prefix. A network operator will no longer need to search through potentially thousands of routes to obtain the learned routes of a local BGP RIB table.

Improved AFI and SAFI Support

Support is added for multiprotocol BGP. AFI and SAFI are added as indexes to the table. The CISCO-BGP4-MIB can be queried for any combination of AFIs and SAFIs that are supported by the local BGP speaker.

Restrictions

BGP 4 MIB Support for per-Peer Received Routes supports only routes that are contained in IPv4 AFIs and unicast SAFIs in the local BGP RIB table. The BGP 4 MIB Support for per-Peer Received Routes enhancement is supported only by BGP Version 4.

Remember rate this post

Yogesh

322
Views
0
Helpful
3
Replies