Upcoming Unicast Migration

ITtech2010

Hey everyone,

I had a question. I have to migrate unicast routes from 10 mb to 100mb circuits for a customer. There are about 109 unicast rip routes. Is there a program that can determine what IP address I could use to summarize all the unicast routes? It would save a lot of time then going through each route one at a time to add the subnet mask.

69.0.0.0/8 auto-summary
69.184.230.0/27
[4] via 192.168.37.9, 00:00:02, GigabitEthernet0/2.37
[4] via 192.168.37.8, 00:00:04, GigabitEthernet0/2.37
69.184.244.0/27
[4] via 192.168.37.8, 00:00:04, GigabitEthernet0/2.37
[4] via 192.168.37.9, 00:00:02, GigabitEthernet0/2.37
69.184.245.0/28
[4] via 192.168.37.8, 00:00:04, GigabitEthernet0/2.37
[4] via 192.168.37.9, 00:00:02, GigabitEthernet0/2.37
160.43.0.0/16 auto-summary
160.43.13.0/27
[4] via 192.168.37.8, 00:00:12, GigabitEthernet0/2.37
[4] via 192.168.37.9, 00:00:10, GigabitEthernet0/2.37
160.43.13.32/28
[4] via 192.168.37.8, 00:00:13, GigabitEthernet0/2.37
[4] via 192.168.37.9, 00:00:11, GigabitEthernet0/2.37
160.43.13.64/28
[4] via 192.168.37.8, 00:00:14, GigabitEthernet0/2.37
[4] via 192.168.37.9, 00:00:12, GigabitEthernet0/2.37

Then maybe the program can sum up all the routes and say you can use 160.43.0.0 /?? to cover all subnets.

vinbuck

This is really going to depend on how much of the Public block is allocated to the customer /26 /25 /24 ??

160.43.13.0/25 is the smallest summary you'll be able to use with what you have right now....

Try this.....
Online IP Subnet Calculator

networker050184

What exactly are you trying to accomplish here? I don't know of any program that will do that for you, but it's a pretty easy task to do manually anyway.

ITtech2010

What I am trying to accomplish is basically summarize all of the rip routes into one subnet. That way I won't need to break up each subnet mask and then copy and paste it on the config. So if for example a customer has majority of routes from

160.43.20.1 / 27
160.43.100.20 / 22

How can I summarize most of the routes into one?

DPG

Bloomberg has the whole 160.43.0.0/16 network according to ARIN.

ITtech2010

Thanks DPG. I just saw that myself. I am looking at my firewall as well to see what prefix they come in as.

object-group network bloomberg_ips
description Bloomberg source IP range
network-object 160.43.0.0 255.255.0.0

Ok so I can probably just copy this prefix to the new ACL for their incoming routes and I should be fine.

networker050184

No offense, but it doesn't really sound like you know what you are doing here. I'd get some assistance from a college or something.

ITtech2010

Well that's why I came to the board to ask the question. If your unclear of what I am asking or can't help then thanks anyway.

I basically wanted to know 2 things.

1. If there was a program that could break up the subnet address (69.184.230.0/27) and turn it into 69.184.230.0 0.0.0.31. Then all I would need to add in for example notepad permit in front of the IP address. I would add these routes to the incoming access list for Bloomberg.

2. If there was a program that could look through all the prefixes I have for bloomberg and summarize it. DPG already helped me with this where Bloomberg comes in as 160.43.0.0. I wanted to see if there was a smaller prefix to use to accommodate all the prefixes I receive from them.

I hope that was more clear. I've done it manually but it was just a question. I'd rather ask a silly question than not at all lol.

DPG

ITtech2010 wrote: »

1. If there was a program that could break up the subnet address (69.184.230.0/27) and turn it into 69.184.230.0 0.0.0.31. Then all I would need to add in for example notepad permit in front of the IP address. I would add these routes to the incoming access list for Bloomberg.

There are plenty of online calculators that do CIDR to wildcard (inverse) but if you have a lot of networks to convert you would probably want to script it. If you have a list of CIDR networks x.x.x.x/xx, you could even use notepad to do a find/replace for each size network.

For example:

192.168.0.0/24
192.168.11.0/24
192.168.22.0/24

Do a find /24 and replace with (space)0.0.0.255.

Result:

192.168.0.0 0.0.0.255
192.168.11.0 0.0.0.255
192.168.22.0 0.0.0.255

ITtech2010

DPG wrote: »

There are plenty of online calculators that do CIDR to wildcard (inverse) but if you have a lot of networks to convert you would probably want to script it. If you have a list of CIDR networks x.x.x.x/xx, you could even use notepad to do a find/replace for each size network.

For example:

192.168.0.0/24
192.168.11.0/24
192.168.22.0/24

Do a find /24 and replace with (space)0.0.0.255.

Result:

192.168.0.0 0.0.0.255
192.168.11.0 0.0.0.255
192.168.22.0 0.0.0.255

Oh ok I understand. Thanks DPG. That's exactly what I wanted to do. Then I can add "Permit" In front of the IP address to make it a lot easier. I use subnet-calculator to provide the wild card mask. My colleague just told me about notepad++. I will give that a shot.

Thanks for your suggestion.

networker050184

What kind of access-list are you trying to create?

ITtech2010

It's already been created. It's an access list that accepts prefixes from them to connect to our network. We send them multicast data on their circuits. So on their old circuits they have unicast routing for services that we provide. I have to move their unicast routes (rip routes) to their new circuits (in bound acl) I wanted to simplify without manually adding the wildcard masks but I can use notepad++ to make the changes.

Hopefully that made sense.