Are you using NAT? Your firewall(s) come from which vendor? Your network diagram looks like? I'll assume you have an Internet facing router with a firewall behind it and maybe routers behind the firewall. IP unnumbered on the serial link to the ISP. Use two addresses from one ip address block for the gateway router's ethernet interface and the outside interface of the firewall (PIX??) If PIX, create two global pools. Or you may have need for statics or addresses for a DMZ. See the following: http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_v52/config/exa mples.htm
Use RFC1918 addresses for the inside hosts. i.e. 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 It is up to the ISP to route to the address blocks (to your gateway router.) You can put those addresses anywhere in your network as long as your gateway router can find them. (I could write several paragraphs making this more explicit - but it's past 9PM.) Good night. > -----Original Message----- > From: exchange [mailto:[EMAIL PROTECTED] > Sent: Tuesday, September 09, 2003 7:19 PM > To: [EMAIL PROTECTED] > Subject: IP Address Migration - routing non contiguous networks > [7:75138] > > > Hi All, > > I have a production site that has a Class C ip address scheme > with /28 block > giving us 16 ip addresses. However, we need additional > public ip addresses > and our ISP is unable to provide us with another contiguous > block of 32 ip > addresses using this specific network. My firewalls are > routing traffic to > their HSRP routers. The best the ISP can do for us is to > offer us a block > of 32 public ip addresses but on another network. Is there > any way to > setup routing to allow for me to use the two networks > simultaneously? If > so, any ideas on how this can be done? Any help would be > greatly appreciated. > > Thanks! > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=75145&t=75145 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
