| [Northeast] Multiple IPs & Cisco routers I have been searching the internet for a week and not found any answers... I see tons of threads from several years ago, none of them resolved, but none recently, and I am at the end of my rope.
I have a Cisco 1811, we use 5 IP addresses and direct NAT them to different servers. The config is good because it worked for years on DSL and also on Cablevision.
Initially we had the problem where they forgot to set up the ONT... we got past that. Now we are having the problem where after a reboot the upper IPs stay up for 6 hours and then disconnect. If I turn on ARP debugging, I can see and log the 5 requests coming from FIOS: They have a return IP of 0.0.0.0 and Cisco lists them as "Filtered, Martian Source."
I can't find the solution but it seems that nobody has this issue anymore. Can anyone help me? If I don't get this figured out in a week I'm going to rip the ONT off the wall myself. |
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 nycdavePremium,MVM
join:1999-11-16
Melville, NY
kudos:7 | Known issue with Alcatel ONT's and Cisco routers. You will need to create a static NAT rule through a Verizon BHR connected between the ONT and your Cisco. |
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| What's a BHR, is that the Verizon branded Actiontec router?
I've seen that solution but honestly I don't quite get it... so do I just make up my own subnet on the inside of the Actiontec?
Actually I think I do get it. But I am kind of irritated that there's no way to do it the right way after reading 3 years of forum posts of the same problem... Do they really not think they should be compatible with Cisco? |
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| reply to ChrisVee
OK. I've gotten a solution.
So I called Verizon back and asked them to send me another Actiontec to do what nycdave suggested. (I gave the Actiontec back to the installer and told him I didn't need it.)
Apparently I got the 1 guy on the phone who gives a damn. I told him my whole sob story, that I'd called 5 times and nobody could help me. He agreed to send me the router, but then asked me to please hold while he talked to his manager.
5 minutes later, he comes back and says, my manager is familiar with the problem, it's going to be fixed in an upcoming firmware update for the ONT. (this is a direct contradiction to yesterday's tech support rep who told us that the ARP requests come from upstream of the ONT.) Then he says, his manager fixed it for me by putting in static ARP entries. (Another direct contradiction to yesterday, when I specifically asked the guy "Please put in static ARP entries" and he said "I can't do that.")
So the manager was right, they fixed it.
Here is the ARP debug from my Cisco before the fix (just imagine it x5 for all 5 of my IPs):
*Feb 2 20:57:15.275: IP ARP req filtered src 0.0.0.0 [ONT MAC], dst [my IP] [my MAC] martian source
Here is the debug after the fix:
*Feb 3 15:50:04.279: IP ARP: rcvd req src [MY IP] [ONT MAC], dst [my IP] FastEthernet0
*Feb 3 15:50:04.279: IP ARP: sent rep src [my IP] [my MAC], dst [my IP] [my MAC] FastEthernet0
So their fix is to trick the Cisco into sending a GARP by saying that the IP is already in use hahaha.... sounds kind of ghetto but it works, I'll take it.
So anyway, the guy's name was John and he had a heavy Boston accent. So the next time you need FIOS support just keep hanging up and calling again until you find him. |
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nycdavePremium,MVM
join:1999-11-16
Melville, NY
kudos:7 | Well since you posted the info, I'll tell you the FSC partially fixed your problem if the static ARP entries were missing from your ONT. The permanent fix will be coming during the next few months with an Alcatel software upgrade. |
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