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routing family

hello

what is the routing family which the router has to build map for the routing domain?

thank

6 REPLIES
Hall of Fame Super Silver

Re: routing family

Hello Ali,

I'm not sure to have understood

BGP can use address-families

the conventional address family used to exchange IPv4 NLRI is

address-family ipv4 unicast

other address families exist to address different needs:

address-family ipv4 multicast

address-family vpnv4

signalling plane for L3 VPN

address family ipv4 vrf vrf-name

used for L3 VPN

address-family ipv6

and so on.

the address-family are the arguments the two speakers can talk about

Hope to help

Giuseppe

Cisco Employee

Re: routing family

Ali,

Are you referring to Link State routing protocols, in which all routers have to build a root tree to all other routers in the network with themselves as the root.

In this case, you could include ospf and isis for IP and nlsp for ipx.

Regards

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

Re: routing family

hello

i mean how the router has to build map for the routing domain

2)when we use LAS typ4 in OSPF?

THANKS

Cisco Employee

Re: routing family

Ali,

> i mean how the router has to build map for the routing domain

Each router runs the Shortest Path First (SPF) algorithm and build a root tree with itself as the root. The result of this calculation is a best path to each subnet in the network.

2) OSPF LSA type 4 is used to provide connectivity to a given ASBR. All areas in the autonomous system will have this lsa type 4, except for the area where the ASBR resides. This area doesn't need the LSA type 4 to calculate connectivity to the ASBR as it will use the LSA type 1 and 2 to do so.

Regards

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

Re: routing family

HELLO AGAIN

WHAT'S THE MEANING OF ADDRESS-FAMILY?why they called it address-family?

THANKS

Cisco Employee

Re: routing family

Ali,

Address-family is just what the name indicates, different family of addresses. For exemple, IPv4, IPv6, IPX, AppleTalk, etc.

Please refer to the following document for a list of registered address-family numbers:

http://www.iana.org/assignments/address-family-numbers/address-family-numbers.xhtml

Regards

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
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