Link to home
Start Free TrialLog in
Avatar of gpsocs
gpsocsFlag for United States of America

asked on

IPv4 Address Range Acquisition and Assignment

I'm in a situation where a site has an existing Internet connection that we're using, but we have a larger pipe dropping soon that has a large c block assigned.  Notwithstanding, in the interim I have to deal with what we have.

I am not aware of the topology of their current infrasctructure except that they've given us a Cisco switch with 4 ports, each with a separate public ip assigned to each interface.  I am, unfortunately, needing a smallish block of IPs for this one interface right now (perhaps 5-10) and I am not exactly sure of the appropriate questions to ask nor what to tell them regarding getting this in position for my SonicWALL router to accept so that it can make the appropriate assignments for devices inside of it's network.

It seems that I may need to grok BGP and ASN's a little better to tell them what I want, but perhaps I'm going too far into implementation in my mind for this issue.

At any rate, I'd certainly appreciate understanding what I need to ask and explain a bit better to get this temporary fix in place.


Avatar of digitap
digitap
Flag of United States of America image

what i'm seeing is that you ask for a block of 5 IP addresses.  then, use one for the WAN interface, set the subnet mask...done.  if they are non-contiguous, you'll use one for the WAN interface along with the appropriate subnet mask.  then, use the KB below to get others "assigned" to the WAN interface.

https://www.fuzeqna.com/sonicwallkb/consumer/kbdetail.asp?kbid=7621

regarding the secondary internet, i'd assign it to an additional interface on the sonicwall and use routes to send traffic out of it as needed.  if you want to assign VPN connections, then i'd move the "crappy" internet to an additional interface making it a secondary WAN, then put the long-term internet on the X1 interface as the primary WAN.  you'll want to remember to move the ARP entries for the non-contiguous subnets if that's necessary.
Avatar of gpsocs

ASKER

Okay, I've got a range!  Only 4, but that's getting me from point A to B right now.

So where do I set the subnet for this particular scenario for utilization?  Example, let's say I have 123.123.123.123, .124, .125 and .126.  I'm not exactly sure where you're saying to set the subnet on this unit.  Just wanting to make sure I'm getting this right vs playing.
ASKER CERTIFIED SOLUTION
Avatar of digitap
digitap
Flag of United States of America image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
SOLUTION
Avatar of Cas Krist
Cas Krist
Flag of Netherlands image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of gpsocs

ASKER

Okay, thanks.  

I ended up having an issue where connections are being made across the VPN from the 10.10.11.1 side, but not back up from the 10.10.12.0/24 side.  It has me quite baffled at the moment as to why suddenly traffic is altogether not seeming to pass back up and to connect with units up stream and still on our fabric.  Hrm.

So yeah, trying to sort this out today...
Avatar of gpsocs

ASKER

Blah, sorry, more delays in this one task and with these issues.  FINALLY back on this today.

Are you saying on the Network -> Interfaces -> General tab to use the IP address "123.123.123.123" with a subnet of 255.255.255.248 and then when setting up NAT for the various devices I just use an IP from that subnet?

Thanks again and thanks for your patience for the points assignment.
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of gpsocs

ASKER

Thanks, posted another question regarding the TZ180 just a few minutes ago if interested.
yup...just saw it. thanks for the points!