cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
412
Views
0
Helpful
4
Replies

distribution OSPF

dangal.43
Level 1
Level 1

what kind of route it will be if i will use redistribute command under ospf and what kind of route it will be if i will use distribute list with route map? will it be external or internal?

4 Replies 4

royalblues
Level 10
Level 10

When you redistribute into OSPF, the routes are tagged as "External" either type 1 or type 2 default being type 2

Distribute list in OSPF is used for controlling prefixes from being entered into the routing table and not for redistribution

HTH

Narayan

HI, [Do Rate all HELPFUL POSTS]

Refer link below for distribute list with route-map:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120limit/120s/120s24/routmap.htm

Using Distribute List with Route-Map statements, will be useful to define a Route-Map to prevent OSPF Routes from being added to the Routing Table.

Refer link below for Eg: OSPF Router redistributing the other Protocols:

http://www.cisco.com/warp/public/105/redist.html#ospf

Do RATE ALL HELPUL POSTS

Best Regards,

Guru Prasad R

Jon Marshall
Hall of Fame
Hall of Fame

Hi

Routes redistributed into your OSPF process will always be external routes, either type 1 or type 2.

Type 1 = Cost of external route as advertised into the OSPF AS + the internal cost within the OSPF AS.

Type 2 = Just the cost of the external route as advertised into the OSPF AS.

By default the type is 2 but you can change this when you redistribute using the "metric" option.

They would still be external whether you use a distribute list/route-map or not.

Jon

marikakis
Level 7
Level 7

Hello,

"Redistributing routes into OSPF from other routing protocols or from static will cause these routes to become OSPF external routes."

http://www.cisco.com/en/US/tech/tk365/technologies_white_paper09186a0080094e9e.shtml#t32

Distribute-list out: works on originating ASBR, does not let the externals of this ASBR to be flooded in the network towards other OSPF routers

Distribute-list in: does not let incoming LSA's make it to the routing table

http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a0080094704.shtml#q12

Kind Regards,

M.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Innovations in Cisco Full Stack Observability - A new webinar from Cisco