D&C GLug - Home Page

[ Date Index ] [ Thread Index ] [ <= Previous by date / thread ] [ Next by date / thread => ]

Re: [LUG] FW: What would you use for this?

 

Hi
Just an update, Thanks for all the responces to the task.

I have started to re-rollout using the LARTC section 4.2, and 4.2.2.method.

My previous method was updating the main tables only. I did notice when
using the "route" command the table list was not instant.

I thought it was working OK, But later discovered that the defined IPs that
i had appended worked but not all default routes worked

The IP range 169.254. has DHCP setup and binds ip to mac address. This had
been in place when i took the network role, I beleive it came about as MS
default IP range. We use the the third oct value of the IP to define machine
type or area, so 8 would be a SIP phone and 2 would be a server etc.

One thing i am not 100% sure of is, Will routing be enough to bridge all
traffic across the 2 NICs. ie traffic from 169.254.*.* and default GW
10.0.2.41. If i define a ip/32 then routing appears to work.

should i be doing any iptables  -jump etc to ensure defaults routes.

Another thing i also want to do which have not found a how to for is a way
of defining extra DHCP options like you get on MS server .ie like the TFTP
server IP, IE atuo discovery etc. is there a list some which defines all the
options that can be used?


Regards

Sam

-----Original Message-----
From: list-bounces@xxxxxxxxxxxxx [mailto:list-bounces@xxxxxxxxxxxxx]On
Behalf Of Simon Waters
Sent: 13 March 2007 13:42
To: list@xxxxxxxxxxxxx
Subject: Re: [LUG] FW: What would you use for this?


sam@xxxxxxxxxxxxxxxxx wrote:
> Hi All
>
> Just thought i would post this problem to see what options would suit
best.
>
> has anyone rolled out a multi gateway as in the attachment?

First you appear to be abusing 169.254.x.x. Probably time to deploy
DHCP, and allocate a random portion of 10.x.x.x to those boxes currently
using 169.254.x.x.

Routing, and load balancing across multiple vendors for outbound traffic
is covered in LARTC section 4.2, and 4.2.2.

Inbound traffic is more complex.

The cheap and tacky solution is allocate 2 IP addresses to each server
(either directly, or via a NAT/PAT device), and use the normal TCP
connectivity behaviour to try another address if the first fails.
Doesn't load balance well, doesn't fail-over quickly, but maybe good enough.

The right way is to do it at the routing level, but that may require
changing arrangements for the lines to use BGP, renumbering etc.

--
The Mailing List for the Devon & Cornwall LUG
http://mailman.dclug.org.uk/listinfo/list
FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html

--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.11/721 - Release Date: 13/03/2007
16:51

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.11/721 - Release Date: 13/03/2007
16:51


-- 
The Mailing List for the Devon & Cornwall LUG
http://mailman.dclug.org.uk/listinfo/list
FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html