From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shashikant Mundlik Date: Mon, 17 Apr 2006 07:14:20 +0000 Subject: Re:[LARTC] Problems in Dead Gateway Detection / Failover - Message-Id: <44433d76.59d0ec0e.62bf.5163@mx.gmail.com> MIME-Version: 1 Content-Type: multipart/mixed; boundary="===============1633387864==" List-Id: References: <43D8CEAE.3010006@tuxspace.com> In-Reply-To: <43D8CEAE.3010006@tuxspace.com> To: lartc@vger.kernel.org This is a multi-part message in MIME format. --===============1633387864== Content-Type: multipart/alternative; boundary="----=_NextPart_000_0011_01C6621A.FB5D3820" This is a multi-part message in MIME format. ------=_NextPart_000_0011_01C6621A.FB5D3820 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi There, I am also trying to do the same for my network. I have two links from different ISPs and I want to configure a failover and load balancing Linux router. I am facing same problem here, that how to detect link failure and let Linux box switch the gateway. I know it works when the first gateway is physically down and not reachable. But what to do if my link is up but there is problem at nexthop level and its not routing packets to destination. Please tell me if this can be overcome by setting multipath routing. Another way I can think of doing this is to use a script which will check if the default route is alive every 15 mins and if not it will make changes in routing table and route the packets through different link. I don't know if this is the best way to do this. If any one know how to do this better please share. If you guys thinks this can work, lets help each other to write such scrip. I am new to LARTC and just now started learning it to solve my network problems. Please help me to achieve this. Thanks in advance. Regards, Shashikant Mundlik Pune, India. ------=_NextPart_000_0011_01C6621A.FB5D3820 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Hi=20 There,
 
I am = also trying to=20 do the same for my network.
I have two links from different ISPs and = I want=20 to configure a failover and load balancing Linux = router.
 
I am = facing same=20 problem here, that how to detect link failure and let Linux box switch = the=20 gateway.
 
I know = it works when=20 the first gateway is physically down and not reachable. But what to do=20 if my link is up but there is problem at nexthop level and its not = routing=20 packets to destination.
 
Please = tell me if=20 this can be overcome by setting multipath routing.
 
Another way I can=20 think of doing this is to use a script which will check if the default = route is=20 alive every 15 mins and if not it will make changes in routing table and = route=20 the packets through different link.
 
I = don't know if this=20 is the best way to do this. If any one know how to do this better please = share.=20
 
If you = guys thinks=20 this can work, lets help each other to write such = scrip.
 
I am = new to LARTC=20 and just now started learning it to solve my network=20 problems.
 
Please = help me to=20 achieve this.
 
Thanks = in=20 advance.
 
Regards,
 

Shashikant=20 Mundlik

Pune,=20 India.

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