Re: Did Anyone see this?
- From: "Ray Dzek" <rdzek@xxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Wed, 29 Oct 2003 10:20:11 -0800
VOIP has several flavors of protocols. The most "popular" right now is SIP.
What is the brand of phone you are using?
----- Original Message -----
From: "Thor" <thor@xxxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Wednesday, October 29, 2003 9:55 AM
Subject: [isalist] Re: Did Anyone see this?
> http://www.ISAserver.org
>
> There may be a way to do what you want, but I really need more info...
> Ethernet is not a protocol, it is a media type. What are the chances of
you
> doing a packet capture of the traffic? That would help us out alot. Note
> that though you don't have IPX on your network, that does not mean that
> devices you plug into the network do not have IPX (or any other protocol
for
> that matter) enabled by default. Packet dump will tell us what we need to
> know...
>
> t
>
> ----- Original Message -----
> From: "Jeff Sloan" <jsloan@xxxxxxxxxxxx>
> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
> Sent: Wednesday, October 29, 2003 9:44 AM
> Subject: [isalist] Re: Did Anyone see this?
>
>
> http://www.ISAserver.org
>
> What I am told, it is just Ethernet.
> I don't have IPX on the network, and the phones have no IP address.
> Everything is done according to MAC address.
> The switch is the same as the phones, mac address.
> Every port on the switch, analog lines, t1 lines, etc, are separate mac
> addresses.
>
> I don't know about the very deep stuff past that.
>
> Jeff Sloan
> Network Administrator
> Cross Oil Refining & Marketing, Inc.
> 484 E. 6th St.
> Smackover, AR 71762
>
> Phone 870-864-8688
> Fax 870-864-8689
> Cell 870-866-9941
>
>
>
> -----Original Message-----
> From: Thor [mailto:thor@xxxxxxxxxxxxxxx]
> Sent: Wednesday, October 29, 2003 11:28 AM
> To: ISALists
> Subject: [isalist] Re: Did Anyone see this?
>
>
> http://www.ISAserver.org
>
> I'm definitely missing something here... What protocol do the phones use
> to encapsulate the voice data? MAC address to MAC address is OK for
> identifying hosts on the same network, but exactly how do the phones
> communicate with the switch?? As far as the "old printer" example, that
> was
> easy- you just set a static entry in the ARP table so you could use
> TCP/IP to then communicate- but, that's TCP/IP. You are saying that
> these phones are not using TCP/IP, so that example does not work... IPX
> maybe? I understand what you are saying about the phones (have my
> trusty NEC Dterm Series E sitting right next to me) insofar as Ethernet
> devices, but they have to have a protocol to communicate. What
> protocol?
>
> t
>
>
>
> ----- Original Message -----
> From: "Jeff Sloan" <jsloan@xxxxxxxxxxxx>
> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
> Sent: Wednesday, October 29, 2003 9:13 AM
> Subject: [isalist] Re: Did Anyone see this?
>
>
> http://www.ISAserver.org
>
> We have had this phone system for 2 years now, and you have to believe
> me, there is no IP addresses on the phones. There is communication
> between mac address to mac address. Adding VOIP is additional, where we
> then would assign IP addresses to the phones.
>
> We have been working just fine this way all this time with no IP
> addresses.
>
> I am the one trying to get this working over the public internet without
> buying the IP license. I thought it possible after I did a google search
> on layer 2 vpn, and found companies doing it, and cisco bought some of
> the hardware tech to make it happen, but it appears to be big enterprise
> type stuff, isp, asp kinda scope, not for the small bussness.
>
> All it has to do is keep a mac address table, and know where the
> destination mac lives. If it lives across the internet, encapsulate it
> in IP, send it to the other layer 2 vpn device, unencapsulate it, and
> send it on through the network.
>
> As far as your question John, you CAN transport with just mac. Just not
> route. Remember the old ways to set up a network printer the first time?
> You used a utility to communicate directly with the mac address, and set
> the IP from there.
>
> These phones are ethernet devices themselves.
> They have ethernet ports and a 2 port switch.
> One goes to the hub or switch, and the other goes to your computer if
> you have one, so you don't have to run new cable.
>
> If there were affordable layer2 vpn devices, seems like it would be
> fairly secure, because not only would you have to spoof an IP to
> intercept it, but then change your mac address too.
>
> Thanks
>
>
>
> Jeff Sloan
> Network Administrator
> Cross Oil Refining & Marketing, Inc.
> 484 E. 6th St.
> Smackover, AR 71762
>
> Phone 870-864-8688
> Fax 870-864-8689
> Cell 870-866-9941
>
>
>
> -----Original Message-----
> From: Thor [mailto:thor@xxxxxxxxxxxxxxx]
> Sent: Wednesday, October 29, 2003 10:15 AM
> To: ISALists
> Subject: [isalist] Re: Did Anyone see this?
>
>
> http://www.ISAserver.org
>
> MessageNo need for me to pipe in about how you can't route MAC - but
> regardless, what is the overall goal? Do you still want to use the VoIP
> functionality w/o IP? If the people you are getting the phone system
> from are telling you that you can have VoIP-type functionality of the
> NBX without purchasing the IP modules, they are mistaken. You can't get
> there from there... You have to ecapsulate the voice traffic within
> IP- there is no VoMAC.
>
> Also, you don't need their VPN solution. A point-to-point ISA VPN
> config with the NBX on one side and the IP Phones on the other will work
> just fine, as long as you don't have too much latency in the network.
> I've been doing VoIP for many years now (and VoFR before that) and my
> limit is about 200 ms or so. Anything more than that and you start to
> introduce jitter; or the delay will be so much that humans will become
> irritated with talking over each other.
>
> t
>
>
> ----- Original Message -----
> From: Jeff Sloan
> To: [ISAserver.org Discussion List]
> Sent: Tuesday, October 28, 2003 6:48 PM
> Subject: [isalist] Did Anyone see this?
>
>
> http://www.ISAserver.org
>
> Just a friendly check, did anyone read this message?
> I sent it out twice and didn't get a single response.
> Even a negative one will do. Just checking.
> Thanks,
>
> Jeff
>
> Does anyone know of an affordable device that would provide Layer 2
> VPN through the internet. I am not looking for a dedicated network
> solution, but something that will just work across the internet.
>
> And how might it affect the ISA server we already use?
> Would it go outside the ISA or inside it?
> My guess is inside it.
>
> My phone system is a layer two network solution out of the box. (3Com
> NBX) Although it has voice over IP that could be turned on, it would
> require a hardware VPN box for each external user to be on our system,
> and some functions that use multicast would not work. Between two states
> we have a dedicated t1, and Cisco switches set to layer two bridging,
> and that works great, but we are about to get rid of the t1 line for
> cost reasons, and go to DSL and VPN.
>
> Since we are going to have to get VPN appliances (3Com DSL secure
> gateway routers, $268) I thought about doing a search for layer 2 VPNs,
> and found several hits, but they seem to be dedicated to large service
> providers and such.
>
> Have you guys heard of anything?
>
> Thanks
>
>
> Jeff Sloan
> Network Administrator
> Cross Oil Refining & Marketing, Inc.
> 484 E. 6th St.
> Smackover, AR 71762
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