Re: Route fallback issue

2018-06-25 Thread Grant Taylor
On 06/25/2018 12:50 PM, Julian Anastasov wrote: Hello, Hi Julian, Yes, ARP state for unreachable GWs may be updated slowly, there is in-time feedback only for reachable state. Fair. Most of the installations where I needed D.G.D. to work would be okay with a < 5 minute timeout. Obviously

Re: Route fallback issue

2018-06-25 Thread Julian Anastasov
Hello, On Sun, 24 Jun 2018, Erik Auerswald wrote: > Hello Julien, > > > http://ja.ssi.bg/dgd-usage.txt > > Thanks for that info! > > Can you tell us what parts from the above text is actually implemented > in the upstream Linux kernel, and starting with which version(s) > (approximat

Re: Route fallback issue

2018-06-25 Thread Julian Anastasov
Hello, On Thu, 21 Jun 2018, Grant Taylor wrote: > On 06/21/2018 01:57 PM, Julian Anastasov wrote: > > Hello, > > > http://ja.ssi.bg/dgd-usage.txt > > "DGD" or "Dead Gateway Detection" sounds very familiar. I referenced it in an > earlier reply. > > I distinctly remember DGD not beha

Re: Route fallback issue

2018-06-24 Thread Erik Auerswald
Hello Julien, On Thu, Jun 21, 2018 at 10:57:14PM +0300, Julian Anastasov wrote: > On Wed, 20 Jun 2018, Grant Taylor wrote: > > On 06/20/2018 01:00 PM, Julian Anastasov wrote: > > > You can also try alternative routes. > > > > "Alternative routes"? I can't say as I've heard that description as a

Re: Route fallback issue

2018-06-21 Thread Grant Taylor
On 06/21/2018 01:57 PM, Julian Anastasov wrote: Hello, Hi. I think so Okay. I'll do some more digging. You can search on net. I have some old docs on these issues, they should be actual: http://ja.ssi.bg/dgd-usage.txt "DGD" or "Dead Gateway Detection" sounds very familiar. I referen

Re: Route fallback issue

2018-06-21 Thread Julian Anastasov
Hello, On Wed, 20 Jun 2018, Grant Taylor wrote: > On 06/20/2018 01:00 PM, Julian Anastasov wrote: > > You can also try alternative routes. > > "Alternative routes"? I can't say as I've heard that description as a > specific technique / feature / capability before. > > Is that it's of

Re: Route fallback issue

2018-06-20 Thread Grant Taylor
On 06/20/2018 01:00 PM, Julian Anastasov wrote: You can also try alternative routes. "Alternative routes"? I can't say as I've heard that description as a specific technique / feature / capability before. Is that it's official name? Where can I find out more about it? But as the kernel su

Re: Route fallback issue

2018-06-20 Thread Julian Anastasov
Hello, On Wed, 20 Jun 2018, Akshat Kakkar wrote: > Hi netdev community, > > I have 2 interfaces > eno1 : 192.168.1.10/24 > eno2 : 192.168.2.10/24 > > I added routes as > 172.16.0.0/12 via 192.168.1.254 metric 1 > 172.16.0.0/12 via 192.168.2.254 metric 2 > > My intention : All traffic

Re: Route fallback issue

2018-06-20 Thread Grant Taylor
On 06/20/2018 09:18 AM, Grant Taylor wrote: Where can I find more information on ignore_routes_with_linkdown?  I don't see it listed in $Kernel/Documentation/networking/ip-sysctl.txt. (I do see fib_multipath_use_neigh documented there in.) I'm specifically interested in if ignore_routes_with_l

Re: Route fallback issue

2018-06-20 Thread Grant Taylor
On 06/20/2018 07:48 AM, David Ahern wrote: See the ignore_routes_with_linkdown and fib_multipath_use_neigh sysctl settings. Where can I find more information on ignore_routes_with_linkdown? I don't see it listed in $Kernel/Documentation/networking/ip-sysctl.txt. (I do see fib_multipath_use_n

Re: Route fallback issue

2018-06-20 Thread David Ahern
On 6/20/18 2:26 AM, Akshat Kakkar wrote: > Hi netdev community, > > I have 2 interfaces > eno1 : 192.168.1.10/24 > eno2 : 192.168.2.10/24 > > I added routes as > 172.16.0.0/12 via 192.168.1.254 metric 1 > 172.16.0.0/12 via 192.168.2.254 metric 2 > > My intention : All traffic to 172.16.0.0/12 sh

Re: Route fallback issue

2018-06-20 Thread Akshat Kakkar
Hi netdev community, I have 2 interfaces eno1 : 192.168.1.10/24 eno2 : 192.168.2.10/24 I added routes as 172.16.0.0/12 via 192.168.1.254 metric 1 172.16.0.0/12 via 192.168.2.254 metric 2 My intention : All traffic to 172.16.0.0/12 should go thru eno1. If 192.168.1.254 is not reachable (no arp en