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Tsat

@optonline.net
reply to majortom1029

Re: Cannot connect to static IP computer

If you dont have ultra you should have them install the seperate modem and static router. Seems to be a lot of connectivity issues with combo unit.


TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
East Stroudsburg, PA
kudos:3
Reviews:
·Optimum Online
reply to officederamo

said by officederamo:

I had the office wired using an ethernet splitter but most of the PC's are directly connected to the Optimum router.

What is an ethernet splitter? This may very well be the problem. You should have a hub or a switch at the minimum. unless that is what you mean by ethernet splitter.

said by officederamo:

Here is an even stranger issue. When I ping using pingplotter from home (Optimum as well) I get 100% packet loss on 2 PC's and I connect about 5% of the time on a 3rd.

Where does pingplotter show the loss occurs.
--
Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore.

officederamo

join:2004-09-22
Pomona, NY

The splitter is just where the electrician did the wiring so that we can access both WAN and LAN's. Splitter is probably the wrong term but I don't the technical term.

The IP's after about 7 hours have reverted to not responding. The last hop before the static IP is 67.59.229.234.

I am also an Optimum SIP truck customer and my network consultant is asking that dept for help too. We'll see what happens.



jaa
Premium
join:2000-06-13
kudos:2
Reviews:
·Optimum Online
·Vonage

Could you tell us a little more about your local network? Does each computer have a single network connection with one of your static IP addresses?
--
NOTHING justifies terrorism. We don't negotiate with terrorists. Those that support terrorists are terrorists.


cablewizzard

join:2009-06-14
Hicksville, NY
kudos:1
reply to officederamo

said by officederamo:

The splitter is just where the electrician did the wiring so that we can access both WAN and LAN's. Splitter is probably the wrong term but I don't the technical term.

The IP's after about 7 hours have reverted to not responding. The last hop before the static IP is 67.59.229.234.

I am also an Optimum SIP truck customer and my network consultant is asking that dept for help too. We'll see what happens.

Ugh oh. The SIP product is deployed from a separate cable modem and SIP proxy box (commonly referred to as a Back-to-back user agent). How is your IP-PBX connected to that B2B box?

Under NO circumstances should you use a SHARED ethernet segment (= switch) between the LAN side of the DPQ3925 static-IP router and the LAN side of the IP-PBX/B2B-box, or even the LAN side behind your NAT router: You MUST keep that traffic truly separate+private - the risk of conflicting IP spaces and host IPs (between what your NAT'd network uses and what the IP-PBX and possibly your VOIP phones use) is just too great: This is beyond your skill level.

I am highly suspicious about your statements that "whatsmyip" (do you mean »www.whatsmyip.org/ ?) is showing you different IP addresses from the same machine at different times - at ALL times should it show you the same IP out of your pool of 5 statics. If it doesn't, your machines are clearly changing networks (more than one DHCP server in the same ethernet L2 space!), and you have some shared ethernet (layer-2!) connecting something improperly. However: I can't think of a scenario that would make whatsmyip to display anything but a publicly routed IP, ever - it should never ever be capable of displaying private RFC1918 addresses (192.168.x.x among others).

majortom1029

join:2006-10-19
Lindenhurst, NY
kudos:1
reply to officederamo

Hmm . Why are all your pc's directly connected to the cisco dumb router ? I call it that because its not really a router. Just something cablevision uses to bind the ip's to.

You really should have a router after their cisco box. Just for some extra security.


officederamo

join:2004-09-22
Pomona, NY

I know it has been quite awhile since I replied. Although my issue is not completely solved I can tell everyone that there is definitely a conflict with running two nics with one static and a second assigned a lan ip from a router.
On suggestion from Cablevision that helped some was to open the tcpip properties for the static IP, then click on advanced and then assign a value of 2 under the automatic metric.
I know little about this but apparently that will keep the static IP from working against the lan IP.
Hope it helps someone else with the issue.



jaa
Premium
join:2000-06-13
kudos:2
Reviews:
·Optimum Online
·Vonage

You may want to post in the networking forum for more help with your issue, since it does not seem to be related to Cablevision. It seems your issue is related to networking when a single computer is on 2 subnets.

Did Cablevision charge you for LAN support?
--
NOTHING justifies terrorism. We don't negotiate with terrorists. Those that support terrorists are terrorists.


cablewizzard

join:2009-06-14
Hicksville, NY
kudos:1
reply to officederamo

said by officederamo:

I know it has been quite awhile since I replied. Although my issue is not completely solved I can tell everyone that there is definitely a conflict with running two nics with one static and a second assigned a lan ip from a router.
On suggestion from Cablevision that helped some was to open the tcpip properties for the static IP, then click on advanced and then assign a value of 2 under the automatic metric.
I know little about this but apparently that will keep the static IP from working against the lan IP.
Hope it helps someone else with the issue.

Woah: That sounds like a single Windows(?) machine connected to 2 networks via 2 NICs, hence conflicting default routes. You can't do that, and the "metric =2" hack is obscuring the issue : this is not a valid configuration.

Run your windows machine's cmd.exe and type "netstat -rn" - if you see 2 default routes (0.0.0.0 / 0.0.0.0), you have an invalid configuration. A windows machine simply CANNOT work with competing default routes - it starts doing random wonky stuff: packets out one interface for one connection, out the other on the next. You MUST configure both NICs statically, and suppress the default route on one of the interfaces (don't ask me how to do that, it's a trivial task under Linux), presumably the local RFC1918 network - and DHCP is a non-starter here.

This has nothing to do with Cablevision providing inconsistent service, but everything with your local network setup being invalid.