Re: Did Anyone see this?
- From: "Jeff Sloan" <jsloan@xxxxxxxxxxxx>
- To: "ISALists" <isalist@xxxxxxxxxxxxx>
- Date: Wed, 29 Oct 2003 13:11:39 -0600
3Com NBX
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: Ray Dzek [mailto:rdzek@xxxxxxxxxxxxxxx]
Sent: Wednesday, October 29, 2003 12:20 PM
To: ISALists
Subject: [isalist] Re: Did Anyone see this?
http://www.ISAserver.org
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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