Yes you can have multiple subnets "networks" in an area.
Yes there are practical rules of thumb regarding numbers of routers in
areas. These grew out of practical experience from people who actually built
OSPF networks. There is nothing in the RFC that places such a limit. The
reasons tend to center around CPU and DRAM requirements. The more routers,
the more routes, the more routing protocol traffic and routing protocol
traffic processing on the router.
I would guess that the "minimum" is a misprint. What was probably meant was
a maximum of some number. I have read 40-50 in various places.
Yes you can have a one router area. All of us doing practice labs have done
this many times.
If you have one router in your entire organization, you probably don't need
a routing protocol of any kind in any case.
HTH
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Paver, Charles
Sent: Thursday, January 11, 2001 7:46 AM
To: '[EMAIL PROTECTED]'
Subject: ccnp: does one area = 1 network?
Hello. I was wondering (after reading ospf) if 1 network = 1 area, or if
you can have several networks inside of one area?
And on page 177 in Ciscopress BSCN, it says the following guidelines: # of
routers in a domain/single area= minimum of 20. That is hard to understand.
Cant we have one domain with one router? Like, if we have a LAN here, with
access to the internet, isnt that one domain with one router?
Thanks!
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