Can a Cisco 2600 even do this? 1

[Mounkey]

Greetings I'm new here! Sorry if this is a stupid question, but i dont' know if it can even be done on a 2600. Ok. We ran out of external ip adressses on our WAN...so i contacted my ISP to get some more.and they gave us some..the problem is they do not match the same subnet as our current config..

strickly for example.. current config

214.43.34.32/28

what they gave us
65.45.34.32/28

So my question is how do i get a different set of ip's into the 2600? keep in mind the IP's are from the same ISP. do i need to add another router? or card etc? or can the 2600 handle this type of request

cheers to all!!!!!and thanks!

 

[raghuisin]

Hi, have u tried using 65.45.34.32/28 in your network.
give default route to ISP router that will take care.

 

[congogrey]

You should not need another router or card to use these IP's. What are you going to use the new addresses for and do they need to be on seperate interfaces? The simplest way (not knowing what they are needed for) is to add the new range as a secondary IP on the orginal interface:

inteface Fa0/0
ip address 214.43.34.X 255.255.255.240
ip address 64.45.34.X 255.255.255.240 secondary

 

[ccmuser]

or if your 2600 has a faste port you can set it up as trunk if you have capable switches..

Otherwise secondary interface works just as well

 

[Mounkey]

thanks Congogrey I think that is what i was looking for...the addresses are for more web sites and/or just extra to have incase we need another external ip. No, they don't need seperate interfaces

and thanks to everyone else! Glad to see a fourm filled with helpful people!

cheers

 

[Mounkey]

ok when i go to cut and paste the cuurent config with the script below added it says bad mask for /28

so my interface ethernet0 looks like this

1.1.1.1 255.255.255.224
2.2.2.2 255.255.255.240 secondary

is this right? or do i need some other orbitrary command in there

1.1.1.1
and 2.2.2.2

are purely examples.

thanks!

 

[juniperr]

Actually you dont even have to add these as secondary addresses to the router as your isp will route them to your router and all you have to do is put a route for these in your routing table and\or NAT them internaly.

 

[fynx]

Hi,

To correct the /28 bad mask error - you need to tell the router to be classless, otherwise it tries to enforce strict ip subnetting rules.

make sure "ip classless" is in your config.

Just noticed you have another classless address that is working, so the above is probably NOT the cause. Make sure the address you are entering is not a subnet or broadcast address. which with a 28 bit mask will be 0,15,16,31,32,47,48,63,64...etc

If everything is coming your way then you're in the wrong lane.