This has turned into a really long thread ... Anyway:
HSRP + BGP would be, IMHO, the best option. It would be graceful and
smooth, not to mention provide automatic failover.
The BIV CAVEAT - this is only true *IF* they can afford to UG their hardware
and if they can justify the IP address space. If we are still just talking
about one server though this is a little too heavy ...
For such a relatively small (1) group of servers/domains it may be worth
looking at something like a third-party IP forwarding service. You have
your two IP's from two ISP's ... give your server one internal/private IP
, NAT on the two routers to the ISP-specific
address. In the event of a failure, the forwarding service would need to be
notified . A quick google search gave me a few results,
dynu.com for example. Don't really have time to see if they do everything
you need, but it is atleast worth looking into!
Downsides:
Usually require SW to be installed on your server(s)
Reliant on the third party to be in business and working
:)
Annual fee .. I think dynu.com said it is like $25/year
Upsides:
No router upgrades
(flash/nvram, licensing ... new routers altogether?)
No BGP activation costs
(~$350 per ISP and I think $300 for the ASN)
Less config work on your part
... sorry to blaspheme and recommend a non-cisco solution :) ...
Thanks!
TJ
-Original Message-
From: Yassel Omar Izquierdo Souchay [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 25, 2002 10:11 AM
To: [EMAIL PROTECTED]
Subject: TWO ISP AND ONE FAILURE [7:36371]
Hello i have a frecuent porblem with one of my isp, i have two cisco routers
and each one to different isp. Frequentily i have to change the gateway of
one of my servers, because one isp is failure. I want to know if with one of
BGP, OSPF, RIP, NAT or other protocol i could do the change automatically to
the other active isp. It happening me right now. And when i have to do that
i have to reset one of my servers.. :S. Is a costs operatrion its a mail
server. So if somebody knows how to resolve between routers with different
isp each one, how to route accross the other good gateway.
Thnx in advance
Yassl
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