Hello!
I have a problem with multipath routes: the host bgpd daemon receives two
subnets
from two eBGP peers, each of the subnets is equally reachable via those peers,
but there is only one route for each subnet in the host routing table.
Please explain what should be done to get two routes in the routing table
for each subnet.
fw3# bgpctl -s /var/run/bgpd.sock.1 show rib | egrep -v "^$"
flags: * = Valid, > = Selected, I = via IBGP, A = Announced,
S = Stale, E = Error, F = Filtered, L = Leaked
origin validation state: N = not-found, V = valid, ! = invalid
aspa validation state: ? = unknown, V = valid, ! = invalid
origin: i = IGP, e = EGP, ? = Incomplete
flags vs destination gateway lpref med aspath origin
*> N-? 198.18.51.0/24 198.18.1.4 100 0 4267050871 ?
*m N-? 198.18.51.0/24 198.18.1.5 100 0 4267050871 ?
*> N-? 198.18.52.0/24 198.18.1.20 100 0 4267050881 ?
*m N-? 198.18.52.0/24 198.18.1.21 100 0 4267050881 ?
fw3# route -v -T 1 show | egrep -v "^$"
Routing tables
Internet:
Destination Gateway Flags Refs Use Mtu Prio Iface
Label
localhost localhost UHl 0 0 32768 1 lo1
192.0.2.0/30 192.0.2.1 UCn 1 3 - 4 ixl2
192.0.2.1 34:73:79:73:63:15 UHLl 0 650 - 1 ixl2
192.0.2.2 34:73:79:73:5c:0e UHLc 1 859 - 3 ixl2
192.0.2.3 192.0.2.1 UHb 0 0 - 1 ixl2
198.18.1.0/28 198.18.1.2 UCn 2 17 - 4 vlan751
198.18.1.0/28 198.18.1.1 UCn 0 0 - 19 carp751
198.18.1.1 00:00:5e:00:01:01 UHLl 0 761343 - 1 carp751
198.18.1.2 34:73:79:73:63:13 UHLl 0 1207 - 1 vlan751
198.18.1.4 24:6c:84:e9:e6:df UHLch 2 6968 - L 3 vlan751
198.18.1.5 90:eb:50:ba:2b:77 UHLc 1 77 - L 3 vlan751
198.18.1.15 198.18.1.2 UHb 0 0 - 1 vlan751
198.18.1.15 198.18.1.1 UHb 0 0 - 1 carp751
198.18.1.16/28 198.18.1.18 UCn 2 31 - 4 vlan752
198.18.1.16/28 198.18.1.17 UCn 0 0 - 19 carp752
198.18.1.17 00:00:5e:00:01:02 UHLl 0 1251 - 1 carp752
198.18.1.18 34:73:79:73:63:13 UHLl 0 1202 - 1 vlan752
198.18.1.20 24:6c:84:e9:e6:df UHLch 2 59 - L 3 vlan752
198.18.1.21 90:eb:50:ba:2b:77 UHLc 1 61 - L 3 vlan752
198.18.1.31 198.18.1.18 UHb 0 0 - 1 vlan752
198.18.1.31 198.18.1.17 UHb 0 0 - 1 carp752
198.18.51/24 198.18.1.4 UG 0 0 - 48 vlan751
198.18.52/24 198.18.1.20 UG 0 0 - 48 vlan752
fw3# sysctl net.inet.ip.multipath
net.inet.ip.multipath=1
fw3# uname -a
OpenBSD fw3 7.7 GENERIC.MP#625 amd64
--
Alex
