Yes, I disabled direct protocol on both routers. The full bird.conf is the following: log syslog all; ipv4 table master4; ipv6 table master6; router1 bgp configuration: protocol bgp { ipv4 { import all; export all; }; local as 1; neighbor 192.168.2.22 as 2; } protocol device { } protocol kernel { ipv4 { table master4; import all; export all; }; } protocol static { ipv4; }
Il giorno mer 25 mar 2020 alle ore 17:06 Alexander Zubkov <gr...@qrator.net> ha scritto: > Do you disable direct protocol on both router1 and router2? > And that is definitely not the full bird config, you do not have a > kernel protocol for example. > > On Tue, Mar 24, 2020 at 10:50 PM Fabiano D'Agostino > <fabiano.dagostin...@gmail.com> wrote: > > > > There is no gateway because they are directly connected. However my > network topology is the following: > > [pc-a - router1 ]=AS 1 ; [pc-b - router 2]=AS 2; > > pc-a: > > enp0s3 > > address 192.168.1.11 > > gw 192.168.1.1 > > router1: > > enp0s3 > > address 192.168.1.1 > > enp0s8 > > 192.168.2.2 > > > > router1 bgp configuration: > > protocol bgp { > > ipv4 { > > import all; > > export all; > > } > > local as 1; > > neighbor 192.168.2.22 as 2 > > > > > > Il giorno mar 24 mar 2020 alle ore 22:40 Alexander Zubkov < > gr...@qrator.net> ha scritto: > >> > >> There is also no gateway in you "route" output on routes exported from > >> bird. Maybe you have some filters that causing it? Could you show your > >> config if it is not secret? > >> > >> On Tue, Mar 24, 2020 at 9:53 PM Fabiano D'Agostino > >> <fabiano.dagostin...@gmail.com> wrote: > >> > > >> > Yes, 'show route', is from Bird. I don't have route-reflector, but > just two routers which have a bgp session. Anyway, yes when direct is > disabled, the bgp session is established. > >> > > >> > Il giorno mar 24 mar 2020 alle ore 21:45 Alexander Zubkov < > gr...@qrator.net> ha scritto: > >> >> > >> >> "show route" looks a little weird, is it from bird? There are also > >> >> commonly a protocol and metric shown. > >> >> Those are from your route-reflector? Do you have your bgp sessions up > >> >> when direct is disabled? > >> >> > >> >> On Tue, Mar 24, 2020 at 9:33 PM Fabiano D'Agostino > >> >> <fabiano.dagostin...@gmail.com> wrote: > >> >> > > >> >> > Good evening Alexander, > >> >> > > >> >> > Direct protocol enabled: > >> >> > 'route' command: > >> >> > Destination Gateway Genmask Flags Metric iface > >> >> > 192.168.1.0 * 255.255.255.0 U 0 > enp0s3 > >> >> > 192.168.1.0 * 255.255.255.0 U 32 > enp0s3 > >> >> > 192.168.2.0 * 255.255.255.0 U 0 > enp0s8 > >> >> > 192.168.2.0 * 255.255.255.0 U 32 > enp0s8 > >> >> > 192.168.4.0 * 255.255.255.0 U 32 > enp0s8 > >> >> > 'show route' command: > >> >> > 192.168.1.0/24 enp0s3 > >> >> > 192.168.2.0/24 enp0s8 via 192.168.2.22 on enp0s8 > >> >> > 192.168.4.0/24 via 192.168.2.22 on enp0s8 > >> >> > > >> >> > Direct protocol disabled: > >> >> > 'route' command: > >> >> > Destination Gateway Genmask Flags Metric iface > >> >> > 192.168.1.0 * 255.255.255.0 U 0 > enp0s3 > >> >> > 192.168.2.0 * 255.255.255.0 U 0 > enp0s8 > >> >> > 'show route' command: > >> >> > empty > >> >> > > >> >> > Thanks, > >> >> > > >> >> > Fabiano > >> >> > > >> >> > Il giorno mar 24 mar 2020 alle ore 21:00 Alexander Zubkov < > gr...@qrator.net> ha scritto: > >> >> >> > >> >> >> I think it would be easier if you showed your route tables in > both cases. > >> >> >> > >> >> >> On Tue, Mar 24, 2020 at 8:57 AM Irene Lalioti < > irene.lali...@restena.lu> wrote: > >> >> >> > > >> >> >> > Hello guys! > >> >> >> > > >> >> >> > Just because today we encountered again the same issue with > direct, I am very curious on this: > >> >> >> > > >> >> >> > I totally agree with what you guys explained about the need of > the direct protocol. Once we set it then reachability works and all is ok. > >> >> >> > > >> >> >> > Our big question is why was it working before the moment it > lost the BGP session?? In other words: the set up : > >> >> >> > > >> >> >> > RS - BGP session with the ROUTER - and behind the Router we > have Caches. > >> >> >> > > >> >> >> > Before the router was announcing to the RS(BIRD v2.0.7) the > caches and that they are reachable by the router. Without any direct. > >> >> >> > > >> >> >> > Until one day we lose the bgp session, and we can ping the > caches from the RS but not reachable . Once we set it as direct on the bird > then all is fine. > >> >> >> > > >> >> >> > Question is why was it working before without direct ?? :=) > >> >> >> > > >> >> >> > Many thanks for your time! > >> >> >> > > >> >> >> > Have a great day all! > >> >> >> > > >> >> >> > Irene. > >> >> >> > > >> >> >> > On 23/03/2020 17:07, Fabiano D'Agostino wrote: > >> >> >> > > >> >> >> > Hi Bernd, > >> >> >> > no, the routing "from the kernel" doesn't come via 'learn yes', > but via RIB, I mean if I do 'route' it shows the directly connected > networks. The problem is that if I use the Direct protocol, the command > 'route' shows me two same directly connected networks, one coming from RIB > and the other one coming from Bird. > >> >> >> > I tried protocol bgp { direct; }, but it doesn't change. > >> >> >> > > >> >> >> > Thanks, > >> >> >> > > >> >> >> > Fabiano > >> >> >> > > >> >> >> > Il giorno lun 23 mar 2020 alle ore 16:15 Bernd Naumann < > b...@spreadshirt.net> ha scritto: > >> >> >> >> > >> >> >> >> On 23.03.20 16:01, Fabiano D'Agostino wrote: > >> >> >> >> > Hi Benedikt, > >> >> >> >> > I am just learning Bird and I didn't want to use the Direct > protocol > >> >> >> >> > because using it I have two same routes in the RIB for the > directly > >> >> >> >> > connected networks, one coming from the kernel and the > second one coming > >> >> >> >> > from the direct protocol. > >> >> >> >> > >> >> >> >> > >> >> >> >> Is the routing "from the kernel" coming via `learn yes;`? If > you have no > >> >> >> >> need to import "alien" routes, you can disable `learn` and > just use > >> >> >> >> `direct` and `static` protocol. /* OR if you know that your > neighbor is > >> >> >> >> directly connected to you can also set 'direct' on the > `protocol bgp`. */ > >> >> >> >> > >> >> >> >> Bernd > >> >> >> >> > >> >> >> >> > >> >> >> > > >> >> >> > -- > >> >> >> > Irene Lalioti > >> >> >> > Network Engineer > >> >> >> > Fondation RESTENA > >> >> >> > 2, avenue de l'Université > >> >> >> > L-4365 Esch/Alzette > >> >> >> > > >> >> >> > Tel: +352 424409 1 > >> >> >> > Fax: +352 422473 >