RE: Cluster technologie ?

  • From: "Jim Harrison" <jim@xxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Sat, 2 Feb 2002 07:13:19 -0800

DNS round robin is not fault tolerance.
It's merely a way to provide additional connection points if one should fail
to respond.
A true "fault tolerance" solution doesn't force the client to make the
routing decision as DNS RR does.

Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/authors/harrison/
Read the books!

----- Original Message -----
From: <paul_lemonidis@xxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Friday, February 01, 2002 14:38
Subject: [isalist] RE: Cluster technologie ?


http://www.ISAserver.org


Hi guys

But DNS round robin doesn't provide fault tolerance??

Paul Lemonidis.


----- Original Message -----
From: "Paul Crisp" <PCrisp@xxxxxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Friday, February 01, 2002 6:28 AM
Subject: [isalist] RE: Cluster technologie ?


> http://www.ISAserver.org
>
>
> Thats what i'm using at the moment, although I was looking for something a
> bit more solid
>
> Paul Crisp
> Snr Network Support Analyst
>
> Tel No : 020 7 827 5201
> Fax No: 020 8 330 7051
>
>
> -----Original Message-----
> From: Periyasamy, Raj [mailto:psraj@xxxxxxxxxxxx]
> Sent: 01 February 2002 14:25
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> Have you looked into DNS round robin method. This may work for you.
>
> Regards,
>
> Raj
>
>
>
>
> -----Original Message-----
> From: Paul Crisp [mailto:PCrisp@xxxxxxxxxxxxxxxxx]
> Sent: February 01, 2002 9:23 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> Unfortunately in my setup we have two offices connected via routers and a
> leased line, and 2 different subnets.
>
> Both offices have ISA servers, although 1 is for outgoing access and the
> other is primarily for incoming access, although can be used as a backup
> incase outgoing access server crashes.
>
> Paul Crisp
> Snr Network Support Analyst
>
> Tel No : 020 7 827 5201
> Fax No: 020 8 330 7051
>
>
> -----Original Message-----
> From: Periyasamy, Raj [mailto:psraj@xxxxxxxxxxxx]
> Sent: 01 February 2002 14:18
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> You can use arrays too. The specific reason why I did not use arrays is
> because arrays require Firewall client software to be installed in all
> workstations. Arrays also make use of CARP for cache lookup, this is a
plus.
> However, if you dont want to use FW client in all workstations, NLB is a
> good choice.
>
> Regards,
>
> Raj
>
>
>
>
> -----Original Message-----
> From: Paul Drumm [mailto:P.Drumm@xxxxxxxxxx]
> Sent: February 01, 2002 9:16 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> I thought you could put isa servers in an array and that the array would
> take care of this?  Any drawback to this compared to the NLB?
>
> -----Original Message-----
> From: Periyasamy, Raj [mailto:psraj@xxxxxxxxxxxx]
> Sent: Friday, February 01, 2002 9:10 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> It's a feature available in Advanced Server. I have two identical ISA
> servers. both are load balanced with NLB. Users access the ISA server
> using
> its virtual name. NLB server automatically divides the load between the
> 2
> servers, and in case if one server fails, all users are moved to the
> surviving server.
>
> Regards,
>
> Raj
>
>
>
>
> -----Original Message-----
> From: Paul Crisp [mailto:PCrisp@xxxxxxxxxxxxxxxxx]
> Sent: February 01, 2002 9:08 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> How do you use the NLB, is it a feature of Win2000 Advanced Server, or
> is it
> available in Win2000 Server
>
> Paul Crisp
> Snr Network Support Analyst
>
> Tel No : 020 7 827 5201
> Fax No: 020 8 330 7051
>
>
> -----Original Message-----
> From: Periyasamy, Raj [mailto:psraj@xxxxxxxxxxxx]
> Sent: 01 February 2002 14:03
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> I use NLB for load balancing two of my ISA servers. Users are
> automatically
> moved to the other server in case if one fails. However, NLB does not
> provide fault tolerance for service failures. For this you may combine
> the
> Service recovery feature of Windows 2000 and NLB to achieve some level
> of
> fault tolerance and recovery.
>
> Regards,
> Raj
>
>
> -----Original Message-----
> From: Philippe [mailto:pmathon@xxxxxxxxxxxxxx]
> Sent: February 01, 2002 5:51 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] Cluster technologie ?
>
>
> http://www.ISAserver.org
>
>
> Hi all of you,
>
> Could someone tell me if ISA Server can be use in a Windows 2000 cluster
> technologie. The fact is that I want to my users not be deconnected if
> the
> ISA Server fall down !
>
> Thanks in advance.
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> psraj@xxxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> pcrisp@xxxxxxxxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> psraj@xxxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> p.drumm@xxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> psraj@xxxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> pcrisp@xxxxxxxxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> psraj@xxxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
> pcrisp@xxxxxxxxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion List as:
paul_lemonidis@xxxxxxxxxxx
> To unsubscribe send a blank email to $subst('Email.Unsub')
>

------------------------------------------------------
You are currently subscribed to this ISAserver.org Discussion List as:
jim@xxxxxxxxxxxx
To unsubscribe send a blank email to $subst('Email.Unsub')




Other related posts: