Hello~!
i'm using bird 2.0.10 ,1.6.3. both of them have same problem.
After restarting bird.service, Routing has been normalized.
Because of this, I don't think I can find the phenomenon in the command you
mentioned (route all)
when i checked "route all" in a trouble, there was only same value shown
below
Detailed setting values may be problematic, so we will replace them with *.
------------- route all ----------------
BIRD 2.0.10 ready.Table master4:10.171.0.0/24 unicast [as1 2024-05-27] * (100)
[********] via 10.171.0.25 on p0 Type: BGP univ
BGP.origin: IGP BGP.as_path: 65200 BGP.next_hop:
10.171.51.1 BGP.local_pref: 100
unicast [as2 2024-05-27] (100)
[********] via 10.171.1.25 on p1 Type: BGP univ
BGP.origin: IGP BGP.as_path: 65200
BGP.next_hop: 10.171.151.1 BGP.local_pref: 50
------------ config -------------------
log "/var/log/bird/bird.log" all;debug protocols all;protocol kernel {
persist; scan time *; merge paths on; ipv4 {
import none; export all;
};}protocol bgp as1 { ipv4 { import
all; export all; }; local *.*.*.* as *; neighbor
*.*.*.* as *; direct; enable route refresh off; hold time
*; error wait time *,*; capabilities on; allow
bgp_local_pref; advertise hostname on;}protocol bgp as2 { ipv4
{ import all; export all; }; local
*.*.*.* as *; neighbor *.*.*.* as *; direct; enable route
refresh off; hold time *; error wait time *,*; capabilities
on; allow bgp_local_pref; advertise hostname on;}
-----Original Message-----From: "Maria Matejka" [email protected]
mailto:[email protected]: "이재용" [email protected]
mailto:[email protected];Cc: [email protected]
mailto:[email protected];Sent: 2024-06-09 (일) 20:18:22 (UTC+09:00)Subject:
Re: [Routing Issue] There are two same net range routing on routing table.
Hello!
Which version of BIRD and Linux kernel are you running? Could you please share
your configuration file and dump of show route all?
Thanks,
Maria
On Mon, Jun 03, 2024 at 10:31:25AM +0900, 이재용 wrote: > Hello, > > We
use BIRD for communication with servers with higher-level switches. > >
But recently we came across the following case: > server run as a ecmp
routing. > 10.171.0.0/24 proto bird > nexthop via 10.171.0.25 dev p0
weight 1 > nexthop via 10.171.1.25 dev p1 weight 1 > For a
change higher-level switches, we adjusted our ibgp LP value to flow traffic as
a one path. As we expected, servers routing are changed as one path routing
> 10.171.0.0/24 proto bird > but, one server has a two same net range
routing. like this sample > case1) > 10.171.0.0/24 proto
bird10.171.0.0/24 proto bird metric 32 > nexthop via 10.171.0.25 dev
${interface1} > nexthop via 10.171.1.25 dev
${interface2} > case2 ) > 10.171.0.0/24 proto bird metric
3210.171.0.0/24 proto bird > nexthop via 10.171.0.25 dev ${interface1} >
nexthop via 10.171.1.25 dev ${interface2} > in case1,
there was any problem , but in case 2 it had. (flow packet as two paths)in my
thought, pervious routing not deleted. So, two same range is now avaliable.if
there are someone who have same problem, would you advise for this problem? >
– Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.
