Hi,
Thanks for your response. I've read most of the suggested document and have
the following question.
It seems that the advantage of GRE over IPsec tunnel is multicast support.
This means we can use routing protocol e.g. ospf to connect 2 sites over the
Internet. Then let these protocol to do the work of load balancing,
redundancy, etc. Am I right ?
But if the media is Frame Relay, then we already have some routing protocol
running on it. Then I can't see what's the use of GRE ip in ip tunneling,
except for config convenience or troubleshooting. Agree ?
This topic is quite new to me. Hope you experienced guys can help. Thank
you.
Regards,
YY
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
EA Louie
Sent: Thursday, August 23, 2001 7:12 AM
To: [EMAIL PROTECTED]
Subject: Re: IP in IP GRE tunneling [7:16833]
>From Cisco's TAC Support pages at
http://www.cisco.com/public/support/tac/home.shtml
click Technologies
scroll down to Security
click General Route Encapsulation
click Implementation & Configuration
scroll down until you find
IPSec with Routing Protocols Using GRE Tunneling
http://www.cisco.com/warp/public/707/ipsec_gre.html
and
Configuring Logical Interfaces (watch URL wrap)
http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/f
un_c/fcprt3/fclogint.htm
CAUTION: watch out for MTU issues that arise from encapsulating IP into a
GRE tunnel
(Using the CCO TAC pages are an indispensible tool in configuring and
troubleshooting routers)
----- Original Message -----
From: "Sam Deckert"
To:
Sent: Wednesday, August 22, 2001 2:19 PM
Subject: Re: IP in IP GRE tunneling [7:16833]
> Would you be able to post a sample config of GRE IP/IP tunnelling over the
> Internet (with and without IPSec?)??
>
> That would be great. Having a bit of trouble with it....
>
> Thanks!
>
> Sam.
>
> ----- Original Message -----
> From: "Juliano Moises da Luz"
> To:
> Sent: Thursday, August 23, 2001 3:05 AM
> Subject: RE: IP in IP GRE tunneling [7:16833]
>
>
> > I think the main advantage is easy to configure and troubleshoot. We
have
> > all VPN links using GRE tunneling with and without IPSEC and it works
> fine.
> >
> > -----Original Message-----
> > From: YY [mailto:[EMAIL PROTECTED]]
> > Sent: quarta-feira, 22 de agosto de 2001 13:23
> > To: [EMAIL PROTECTED]
> > Subject: IP in IP GRE tunneling [7:16833]
> >
> >
> > Hi,
> > What's advantage or use of IP in IP GRE tunneling ? Thank you.
> >
> > Regards,
> > YY
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