Re: [squid-users] Multiple ISP setup

Hi Phi DG,

BGP will be involved in the connection with the 2 ISP's, I will be enabling
BGP to merge and balance traffic and as a backup to each other. my only
concern is the cache/proxy server, since I need to define the cache_peer
parents for each of 2 ISP's my question is, can squid knows that it has 2
ISP links and it should merge load balance the traffic (for example ISP 1
is 1 Mbps and ISP 2 is 1 Mbps) so can squid knows that the total bandwidth
is 2 Mbps? second, If ISP 1 fails all traffic is redirected to ISP 2
automatically by BGP, so squid should also fetch object to ISP 2 with 1 Mbps
bandwidth.

I short can we configure squid to follow the routing activity? the router
ang BGP routing will do the layer 1 to layer 4, and squid cache will ride on
it?

Thank you very much,

Wennie

----- Original Message -----
From: "Damian-Grint Philip" <pdamian-grint@collierscre.co.uk>
To: "Wennie V. Lagmay" <wlagmay@yanbulink.net>;
<squid-users@squid-cache.org>
Cc: "squidrunner team" <squidrunner_dev@yahoo.com>
Sent: Saturday, May 21, 2005 8:07 PM
Subject: RE: [squid-users] Multiple ISP setup

> Hi Wennie,
>
> I may be getting the wrong end of the stick here, but It sounds like you
> are asking how to load-balance traffic to and from a single host (squid
> box) over two links that you only control on the near end, without
> touching the routers involved.... that's quite a challenge.
>
> One approach which has worked very well for me in the past is to use at
> least two squid boxes, each associated to an address that is preferred on
> separate links. You can then split your traffic across the two links by
> splitting your traffic across the two squid boxes.
>
> You could do this for proxy-configured clients by using a WPAD proxy
> script which returns different PROXY strings based on the ip address of
> the client, and for non-proxy-configured clients, by letting WCCP split
> the load (by destination address hashes I think) as long as both squid
> boxes register with the same intercepting router.
>
> If you can involve your BGP config engineer, then you will have more
> options - you can't talk about load balancing and redundancy without
> involving routing anyway - you split the inbound traffic from the outbound
> traffic and then talk about how you can influence the paths taken in each
> case.
>
> Regards
>
> Phi DG
>
> -----Original Message-----
> From: Wennie V. Lagmay [mailto:wlagmay@yanbulink.net]
> Sent: Sat 21/05/2005 07:24
> To: squid-users@squid-cache.org
> Cc: squidrunner team
> Subject: [squid-users] Multiple ISP setup
>
>
>
> How can I setup my squid to automatically connect and load balance from
> two
> or more ISP at the same time? Presently we are connected to ISP 1 so all
> clients are served by our proxy server through ISP 1, now we are about to
> have ISP 2 my question now is how can I configure my squid to use both
> ISP
> at the same time, when ISP 1 is down all request will be on ISP 2 and vice
> versa?
>
> The routing will be handle by our router configure for BGP, so my only
> concern is about squid.
>
> Thank you very much,
>
> Wennie
>
>
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Received on Sat May 21 2005 - 23:03:02 MDT