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

how many routers can stay in one OSPF area?

i want to know whether there is a restriction for the number of routers in one area. especially in "area 0".

where can i find a documentation to explain the question?

thanks.

  • Other Network Infrastructure Subjects
2 REPLIES
New Member

Re: how many routers can stay in one OSPF area?

The rule of thumb is that there are 200 routers in an area. Areas with more than 200 routers starts experiecing problems. Also areas with large amount of routers will take longer time for SPF calculations

Thanks

Azhar Soomro

Gold

Re: how many routers can stay in one OSPF area?

There is no hard limit--I've seen networks with several hundred routers in a single area, and several thousand routes. It's all going to depend on the processing power of the smallest router in the area, and the memory availablt on the smallest router in the area, along with the work done by the ABR's in translating various packets, etc.

So, basically, there is no limit. Just watch your memory, processors, and spf times, to gauge when "enough is enough."

Russ.W

105
Views
0
Helpful
2
Replies
This widget could not be displayed.