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Community Member

OSPF and Multiple Area 4s hanging off Area 0

Good Day,

Can you have multiple Area4s hanging off a single contiguous Area0?

Area4-----Area0------Area4

Each Area4/Area0 ABR will be advertising a different subnet into Area0.

All areas still connect to Area0 so I think it should work; but I am trying to confirm this.

Thanks very much for your help.

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: OSPF and Multiple Area 4s hanging off Area 0

This is perfectly acceptable to have a partitioned non-backbone area. OSPF spec only forbids the partioning of the backbone area.

Hope this helps,

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
1 REPLY
Cisco Employee

Re: OSPF and Multiple Area 4s hanging off Area 0

This is perfectly acceptable to have a partitioned non-backbone area. OSPF spec only forbids the partioning of the backbone area.

Hope this helps,

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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