ospf

[amms68958]

Hi,

Having doubts in some of the NSSA concepts..

Is it allowed to have more than one ASBR in an NSSA..?

If yes,then say,I have 2 ASBRS in an NSSA,and both having routes to a particular external network..AFAIK,In the NSSA ABR,type 7 to type 5 conversion happens to the routes learned by both the ASBRS,by default .So is it possible to prevent the type 7 to type 5 conversion(at the ABR) for a particular route learned from an ASBR .?

Thanks in advance,

Thomas.

[m.lammerse]

Hi Thomas,

you can have as many ASBRs for an NSSA as you want. All within reason and sensible constraints ofcourse.

Here's a section on LSA filtering and how to prevent Type 7 LSA from being translated to Type 5 LSAs :

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094a88.shtml#filternssa

HTH

Marcel

[amms68958]

Thanks Marcel