Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

BGP - External routers use static or dyamic IPs?

I have two external routers, one with each provider. I have a class C from each ISP, my own AS number. Should I assign the routers a static IP address from the static range they gave me or should I assign them an IP in the range I have advertised out via BGP?? I have an ASA behind the routers doing NAT. Should this have an IP address of one of the BGP networks??

3 REPLIES
Bronze

Re: BGP - External routers use static or dyamic IPs?

I am not sure whether the 2 Class C networks mentioned by you are your own or assigned from ISP as you said you have your own AS number.

If you are talking about external interface of your router connnecting to your ISP, then it should be assigned with ISP provided WAN subnet. You will configure your local LAN with provider assigned Class C Subnet which you will advertise out.

Your ASA external interface should have public IP (provider assigned class C) & you will have private IP subnet internally.

-Ashok.

With best regards... Ashok ----------- Pls kindly rate if helpful or answered your question.
Community Member

Re: BGP - External routers use static or dyamic IPs?

The two class Cs are assigned by the ISP, one each. I am talking about internal interface of the router and external interface of the ASA...

By static and dynamic I meant should I use statically routed IPs or dyanmically routed IP addresses for the network equipment (the ones in the class c I have advertised)??

Sorry for the confusion!

Bronze

Re: BGP - External routers use static or dyamic IPs?

Suggest to use static IP addresses from assigned Class C.

-Ashok.

With best regards... Ashok ----------- Pls kindly rate if helpful or answered your question.
187
Views
0
Helpful
3
Replies
CreatePlease to create content