*Hi,*
*I am facing an issue with the LCP route update when a particular interface
changes state (i.e. when I manually shut it down and when I bring it up).*
*Before shutting interface down, below is the state both in FRR and Linux
table:*
*FRR table:*
ingress-node-vpp-58dcb69b5f-g9rzp:/# vtysh
Hello, this is FRRouting (version 8.5_git).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
ingress-node-vpp-58dcb69b5f-g9rzp# show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued, r - rejected, b -
backup
t - trapped, o - offload failure
K>* 0.0.0.0/0 [0/0] via 169.254.1.1, eth0, 00:29:12
C>* 10.0.0.142/32 is directly connected, eth0, 00:29:12
O 10.0.5.0/24 [110/10] is directly connected, dpdk0, weight 1, 00:29:12
C>* 10.0.5.0/24 is directly connected, dpdk0, 00:29:12
*O>* 10.0.9.0/24 <http://10.0.9.0/24> [110/40] via 192.168.100.2, gre0,
weight 1, 00:24:19 * via 192.168.100.6, gre1, weight
1, 00:24:19*
K>* 169.254.1.1/32 [0/0] is directly connected, eth0, 00:29:12
O 192.168.100.0/30 [110/10] is directly connected, gre0, weight 1,
00:24:31
C>* 192.168.100.0/30 is directly connected, gre0, 00:24:31
O 192.168.100.4/30 [110/10] is directly connected, gre1, weight 1,
00:24:33
C>* 192.168.100.4/30 is directly connected, gre1, 00:24:33
O>* 192.168.100.8/30 [110/20] via 192.168.100.2, gre0, weight 1, 00:24:19
O>* 192.168.100.12/30 [110/20] via 192.168.100.6, gre1, weight 1, 00:24:19
O>* 192.168.100.16/30 [110/30] via 192.168.100.2, gre0, weight 1, 00:24:19
O>* 192.168.100.20/30 [110/30] via 192.168.100.6, gre1, weight 1, 00:24:19
*Linux Table:*
ingress-node-vpp-58dcb69b5f-g9rzp:/# ip r
default via 169.254.1.1 dev eth0
10.0.5.0/24 dev dpdk0 proto kernel scope link src 10.0.5.16
*10.0.9.0/24 <http://10.0.9.0/24> nhid 22 proto ospf metric 20
nexthop via 192.168.100.2 dev gre0 weight 1 nexthop via
192.168.100.6 dev gre1 weight 1*
169.254.1.1 dev eth0 scope link
192.168.100.0/30 dev gre0 proto kernel scope link src 192.168.100.1
192.168.100.4/30 dev gre1 proto kernel scope link src 192.168.100.5
192.168.100.8/30 nhid 18 via 192.168.100.2 dev gre0 proto ospf metric 20
192.168.100.12/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.16/30 nhid 18 via 192.168.100.2 dev gre0 proto ospf metric 20
192.168.100.20/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
*When I manually shut gre0 down, it is removed from the nexthop:*
ingress-node-vpp-58dcb69b5f-g9rzp:/# vtysh
Hello, this is FRRouting (version 8.5_git).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
ingress-node-vpp-58dcb69b5f-g9rzp#
ingress-node-vpp-58dcb69b5f-g9rzp#
ingress-node-vpp-58dcb69b5f-g9rzp# show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued, r - rejected, b -
backup
t - trapped, o - offload failure
K>* 0.0.0.0/0 [0/0] via 169.254.1.1, eth0, 00:37:00
C>* 10.0.0.142/32 is directly connected, eth0, 00:37:00
O 10.0.5.0/24 [110/10] is directly connected, dpdk0, weight 1, 00:37:00
C>* 10.0.5.0/24 is directly connected, dpdk0, 00:37:00
*O>* 10.0.9.0/24 <http://10.0.9.0/24> [110/40] via 192.168.100.6, gre1,
weight 1, 00:00:06*
K>* 169.254.1.1/32 [0/0] is directly connected, eth0, 00:37:00
O>* 192.168.100.0/30 [110/60] via 192.168.100.6, gre1, weight 1, 00:00:06
O 192.168.100.4/30 [110/10] is directly connected, gre1, weight 1,
00:32:21
C>* 192.168.100.4/30 is directly connected, gre1, 00:32:21
O>* 192.168.100.8/30 [110/50] via 192.168.100.6, gre1, weight 1, 00:00:06
O>* 192.168.100.12/30 [110/20] via 192.168.100.6, gre1, weight 1, 00:32:07
O>* 192.168.100.16/30 [110/40] via 192.168.100.6, gre1, weight 1, 00:00:06
O>* 192.168.100.20/30 [110/30] via 192.168.100.6, gre1, weight 1, 00:32:07
ingress-node-vpp-58dcb69b5f-g9rzp:/# ip link set dev gre0 down
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/# ip r
default via 169.254.1.1 dev eth0
10.0.5.0/24 dev dpdk0 proto kernel scope link src 10.0.5.16
*10.0.9.0/24 <http://10.0.9.0/24> nhid 23 via 192.168.100.6 dev gre1 proto
ospf metric 20*
169.254.1.1 dev eth0 scope link
192.168.100.0/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.4/30 dev gre1 proto kernel scope link src 192.168.100.5
192.168.100.8/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.12/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.16/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.20/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
*But when I bring it up again, FRR shows that both gre0 and gre1 are
nexthops but Linux table (also in VPP fib) still shows only gre1:*
ingress-node-vpp-58dcb69b5f-g9rzp:/# ip link set dev gre0 up
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/# ip r
default via 169.254.1.1 dev eth0
10.0.5.0/24 dev dpdk0 proto kernel scope link src 10.0.5.16
*10.0.9.0/24 <http://10.0.9.0/24> nhid 23 via 192.168.100.6 dev gre1 proto
ospf metric 20*
169.254.1.1 dev eth0 scope link
192.168.100.0/30 dev gre0 proto kernel scope link src 192.168.100.1
192.168.100.4/30 dev gre1 proto kernel scope link src 192.168.100.5
192.168.100.8/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.12/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.16/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
192.168.100.20/30 nhid 23 via 192.168.100.6 dev gre1 proto ospf metric 20
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/#
ingress-node-vpp-58dcb69b5f-g9rzp:/# vtysh
Hello, this is FRRouting (version 8.5_git).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
ingress-node-vpp-58dcb69b5f-g9rzp#
ingress-node-vpp-58dcb69b5f-g9rzp#
ingress-node-vpp-58dcb69b5f-g9rzp# show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued, r - rejected, b -
backup
t - trapped, o - offload failure
K>* 0.0.0.0/0 [0/0] via 169.254.1.1, eth0, 00:34:25
C>* 10.0.0.142/32 is directly connected, eth0, 00:34:25
O 10.0.5.0/24 [110/10] is directly connected, dpdk0, weight 1, 00:34:25
C>* 10.0.5.0/24 is directly connected, dpdk0, 00:34:25
*O>* 10.0.9.0/24 <http://10.0.9.0/24> [110/40] via 192.168.100.2, gre0,
weight 1, 00:00:17 * via 192.168.100.6, gre1, weight
1, 00:00:17*
K>* 169.254.1.1/32 [0/0] is directly connected, eth0, 00:34:25
O 192.168.100.0/30 [110/10] is directly connected, gre0, weight 1,
00:00:24
C>* 192.168.100.0/30 is directly connected, gre0, 00:00:24
O 192.168.100.4/30 [110/10] is directly connected, gre1, weight 1,
00:29:46
C>* 192.168.100.4/30 is directly connected, gre1, 00:29:46
O>* 192.168.100.8/30 [110/20] via 192.168.100.2, gre0, weight 1, 00:00:17
O>* 192.168.100.12/30 [110/20] via 192.168.100.6, gre1, weight 1, 00:29:32
O>* 192.168.100.16/30 [110/30] via 192.168.100.2, gre0, weight 1, 00:00:17
O>* 192.168.100.20/30 [110/30] via 192.168.100.6, gre1, weight 1, 00:29:32
*startup.conf:*
unix {
nodaemon
log /tmp/vpp.log
full-coredump
gid vpp
interactive
cli-listen /run/vpp/cli.sock
exec /etc/vpp/init.conf
}
cpu {
main-core CORE1
corelist-workers CORE2
}
memory {
main-heap-size 2G
}
api-trace {
on
}
buffers {
buffers-per-numa 128000
default data-size 2048
page-size default-hugepage
}
dpdk {
dev 0000:00:06.0 {name dpdk0}
dev 0000:00:07.0 {name dpdk1}
}
api-segment {
gid vpp
}
plugins {
path /usr/lib/x86_64-linux-gnu/vpp_plugins/
plugin ping_plugin.so { disable }
plugin linux_cp_plugin.so { disable }
plugin linux_nl_plugin.so { disable }
plugin lcpng_if_plugin.so { enable }
plugin lcpng_nl_plugin.so { enable }
plugin dpdk_plugin.so { enable }
}
lcpng {
lcp-sync
lcp-auto-subint
}
logging {
default-log-level info
default-syslog-log-level crit
class linux-cp/if { rate-limit 10000 level debug syslog-level debug }
class linux-cp/nl { rate-limit 10000 level debug syslog-level debug }
}
*Init conf:*
create gre tunnel src 10.0.6.16 dst 10.0.6.17 instance 0
create gre tunnel src 10.0.6.16 dst 10.0.6.18 instance 1
lcp create gre0 host-if gre0 tun
lcp create gre1 host-if gre1 tun
lcp create dpdk0 host-if dpdk0
set interface ip address gre0 192.168.100.1/30
set interface ip address gre1 192.168.100.5/30
set interface state gre0 up
set interface state gre1 up
set interface mtu 9001 dpdk0
set interface mtu 9001 dpdk1
set interface ip address dpdk0 10.0.5.16/24
set interface ip address dpdk1 10.0.6.16/24
set interface state dpdk0 up
set interface state dpdk1 up
What could be wrong?
Thanks
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