[113593] in North American Network Operators' Group
Re: Looking for AT&T / Verizon / Sprint WWAN service impressions
daemon@ATHENA.MIT.EDU (Eddie)
Wed Apr 15 22:06:58 2009
Date: Wed, 15 Apr 2009 19:08:52 -0700
From: Eddie <eddies@softhome.net>
To: "Crooks, Sam" <Sam.Crooks@experian.com>
In-Reply-To: <B75E03EB8D7BCE419496BC89D272087304A1D754@ALNEXCHMB03.ena.us.experian.local>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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Crooks, Sam wrote:
> I'm considering use of AT&T / Verizon / Sprint WWAN services and the
> Cisco 3G router interface cards/integrated module in C880 routers for
> primary or backup WAN network connectivity for routers.
>=20
> I'm looking for information from users of these services on the
> following:=20
I have only Verizon at the remote locations. But I have messed with the=20
others.
>=20
> - addressing - Do these WWAN services use dynamic, PPPoE or static IP
> assignment typically? Any of the 3? All?
> - is static IP assignment available?
Verizon is private NAT by default. They will provide a static public IP=20
address for a one time fee of $500. If I recall right, it's still PPP,=20
but you get the same IP address every time.
As of 6 months ago, Sprint did not have a static IP option. I now hear=20
that they do.
>=20
> - do these service providers use NAT within their network?
>=20
> - How is the service reliability? In most cases, is the service
> available for use when you need to use it?
Depends on your location and the type of radio (USB or pcmcia) you use.=20
The USB ones tend to flake out on me more, but it might be the router or =
other issues.
> - How is the service coverage area? Do you have problems getting
> sufficient coverage in the deplouyment location to support desired
> speeds (say 512kbps up/down as a minimum)?
Once again, this depends on your area. I use it as a last ditch effort=20
when DSL is not available.
> - is ESP / IKE / IPsec permitted through un-rate-limited and un-moleste=
d
> by the providers?
No problems using IPSEC tunnels (Cisco PIX) over Verizon EVDO.
> - If you build a IPsec/GRE tunnel over these services, do you have
> frequent issues with the tunnel dropping, or a dynamic routing protocol=
> running through the tunnel going down frequently?
The Cisco Pix series tend to rebuild a dropped tunnel, so I can't say I=20
have looked into it that deeply.
>=20
> Also interested in similar information on impressions of similar EMEA
> WWAN service providers, particularly Vodaphone and T-Mobile, if anyone
> has experiences with these.
I have had issues running IPSEC tunnels over a local WISP. Whenever they =
would drop out do to maint (normally once a year), I could no longer=20
establish an VPN tunnel. It would often take days to weeks before the=20
tunnel would work again. Something in their system would drop the packets=
=2E
Never found the cause and switched over to EVDO.
No problems bringing up a VPN connection on my laptop, tethered to my G1 =
phone on T-Mobile.
>=20
>=20
> Replies on-list or off-list are welcome.... Your choice.
>=20
> Cisco 3G interface and provider information:
>=20
> http://www.cisco.com/en/US/products/ps7272/index.html
>=20
> http://www.cisco.com/en/US/prod/routers/networking_solutions_products_g=
e
> nericcontent0900aecd80601f7e.html#~north-america
>=20
>=20
>=20
> Regards,
>=20
> Sam Crooks
>=20
>=20
> =20
>=20
>=20
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