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 >