Re: [squid-users] Squid with three isp

Thank you.

When we use tcp_outgoing address and select isp . The all traffic seems
to be going through the default gateway Ethernet of the squid machine
and only reply comes through the tcp out going address assigned Ethernet.

Eg isp1- eth1(default gateway) isp2-eth2, client- eth0
In squid.conf
acl isp1 src172.16.1.48
acl isp2 src 172.16.1.56 .
tcp_outgoing address < ip of isp1 > isp1
tcp_outgoing address < ip of isp2 > isp2

When we browse from client 172.16.1.56 and tcpdump eth1 we can see
connections are established through eth1 which is supposed to be through
eth2. But we can see reply comes through the eth2 and also
whatismyip.com shows ip of isp2. This shows that default gateway isp1 is
used for making all requests so that it is overloaded and the isp2 is
used only for receiving requests.

Thanks,
Senthil

Hasanen AL-Bana wrote:
> Hi,
> If you have different IP ranges on the same machine , then you need to
> add 3 gateways using linux ip route , then you can make use of
> tcp_outgoing_address.
> I have it documented here :
> http://www.snono-systems.com/files/squid-multiwan.pdf
>
> On Wed, Feb 23, 2011 at 9:50 AM, Senthilkumar
> <senthilkumaar2021_at_gmail.com> wrote:
>
>> Amos Jeffries wrote:
>>
>>> On Wed, 23 Feb 2011 10:41:20 +0530, Senthilkumar wrote:
>>>
>>>> Hello All,
>>>>
>>>> We have a gateway machine which has three upstream isp and to make
>>>> clients use the particular isp we use advance routing based on the
>>>> source address. When we run squid on the same machine to log
>>>> websites all traffic passes through the single isp i.e. the isp which
>>>> is set as default gateway. We need all the users to pass through squid
>>>> and use different isp's as per source route.
>>>> Please share your views to achieve it.
>>>>
>>> http://wiki.squid-cache.org/ConfigExamples/Strange/RotatingIPs
>>>
>>> Amos
>>>
>>>
>> Thank you very much Amos,
>>
>> We have clients in 10.X.X and 172.16.1.X and 172.16.2.X series, we need each client series would use single isp for upload and download.
>> whether the following configuration achieve it?
>>
>> acl isp1 src 10.X.X
>> acl isp2 src 172.16.1.X
>> acl isp3 src 172,16.2.X
>>
>> acl download method GET HEAD
>> acl upload method POST PUT
>>
>> tcp_outgoing_address <isp1 ip> isp1 download upload
>> tcp_outgoing_address <isp2 ip> isp1 download upload
>> tcp_outgoing_address <isp3 ip> isp1 download upload
>>
>> whether by setting tcp_outgoing_address whether upload and download takes place through the source based routed isp or the default gateway isp?
>>
>> Thank
>> Senthil
>>
>>
>
>
Received on Wed Feb 23 2011 - 12:37:27 MST