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Redistribute OSPFv2 with EIGRPv3

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Azlord_Cisco
Beginner
Beginner

‎05-29-2018 08:28 PM - edited ‎03-08-2019 03:10 PM

Hi there

 

I need some help with a company merger type scenario.

 

I have two sites: A and B. Site A runs OSPFv2 while site B runs EIGRPv6. 

 

The topology of the main routers is quite basic:

 

Site A R1 <---> Site B R1.

 

Both of the main routers are 1841 models and dual stacked for basic connectivity.

 

I need to redistribute routes between these two routers so that branch routers connected to them can obtain routes of the other sites using only their respective routing protocol. There is the option of using a L3 switch between the two main routers, but would like to attempt with just the two main routers first.

 

After some sample router configurations for this scenario.

 

 

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Richard Burts
Hall of Fame
Hall of Fame
In response to Azlord_Cisco

‎06-07-2018 09:21 AM

I believe that dual stack is the way to go. The fundamental problem with trying to redistribute is that the addresses are completely incompatible. Redistribution works in IPv4 networks because while the protocols differ in the metrics that they use they are both using the same kind of addressing. A 32 bit address coming out of EIGRP is easily understood by OSPF. But think about what would happen if your EIGRPv3 tries to redistribute a 128 bit address to OSPF?

 

HTH

 

Rick

HTH

Rick

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