Hello, I am testing DHCP client feature from VPP stack (v22.02) onto our system.
My setup is: I run k8s cluster on x86 system in which I have a pod which uses
VPP stack and it accesses physical NIC interface using DPDK and SR-IOV. There
are two physical interfaces which we use in VPP, one of them is with static IP
(eno2) and other one with as DHCP client (eno1).
I expect this interface shall act as a DHCP Client and we run a DHCP server on
the other end of the system. But unfortunately, the VPP does not send any DHCP
REQUEST. It keeps sending DHCP DISCOVERY every interval. It receives a DHCP
Offer.
But VPP does not send further DHCP REQUEST to the DHCP server. I do not expect
that it is a problem from lower layer and it should be an issue from VPP side.
Please let me know if I need to enable any extra plugin other than the ones in
the attached file.
I attached pcap file recorded vpp trace of tx and rx.
Our versions are currently as follows:
-> DPDK 22.03
-> VPP 22.02
-> VPP library 22.02
Version Information attached.
plugins
{
path /opt /vpp/lib/vpp_plugins
plugin default { disable }
plugin dpdk_plugin.so { enable }
plugin memif_plugin.so { enable }
plugin ping_plugin.so { enable }
plugin router_plugin.so { enable }
plugin upffp_plugin.so { enable }
plugin dhcp_plugin.so { enable }
}
Commands used:
set intfc VPP-N6-0 state up
set int mac address eno1 00:11:22:33:44:66
set dhcp client intfc eno1
sh dhcp client verbose
[0] VPP-N6-0 state DHCP_DISCOVER installed 0 no address
lease: lifetime:0 renewal-interval:0 expires:0.00 (now:2412.35)
retry-count:346, next-xmt:2416.87
broadcast adjacency:20
sh log
2023/02/27 16:11:03:986 notice dhcp/client sm active session 0
2023/02/27 16:11:03:986 notice dhcp/client send: type:discover bcast:1
[0] VPP-N6-0 state DHCP_DISCOVER installed 0 no address
lease: lifetime:0 renewal-interval:0 expires:0.00 (now:255827.12)
retry-count:439, next-xmt:255827.12
broadcast adjacency:11
2023/02/27 16:11:08:986 notice dhcp/client sm active session 0
2023/02/27 16:11:08:986 notice dhcp/client send: type:discover bcast:1
[0] VPP-N6-0 state DHCP_DISCOVER installed 0 no address
lease: lifetime:0 renewal-interval:0 expires:0.00 (now:255832.12)
retry-count:440, next-xmt:255832.12
broadcast adjacency:11
2023/02/27 16:11:13:986 notice dhcp/client sm active session 0
2023/02/27 16:11:13:986 notice dhcp/client send: type:discover bcast:1
[0] VPP-N6-0 state DHCP_DISCOVER installed 0 no address
lease: lifetime:0 renewal-interval:0 expires:0.00 (now:255837.12)
retry-count:441, next-xmt:255837.12
broadcast adjacency:11
2023/02/27 16:11:18:986 notice dhcp/client sm active session 0
2023/02/27 16:11:18:986 notice dhcp/client send: type:discover bcast:1
[0] VPP-N6-0 state DHCP_DISCOVER installed 0 no address
lease: lifetime:0 renewal-interval:0 expires:0.00 (now:255842.12)
retry-count:442, next-xmt:255842.12
broadcast adjacency:11
show interface address
eno2 (up):
L3 172.31.254.17/29
eno1 (up):
host-vpp1out (up):
L3 128.0.129.144/24
local0 (dn):
memif0/502 (up):
Thank you in advance.
Best Regards,
Anagha
Version: v22.02
Compiled by: root
Compile host: ubuntu-22
Compile date: 2022-12-16T10:32:54
Compile location: /root/upf/upfv3/fastpath/build-vpp/vpp
Compiler: Clang/LLVM 11.0.1
Current PID: 70
Command line arguments:
/opt/upf_fp/vpp/bin/vpp
unix
{
nodaemon
log
/tmp/vpp.log
full-coredump
cli-listen
/run/vpp/cli.sock
}
api-trace
{
on
}
cpu
{
main-core
1
corelist-workers
2-4
}
dpdk
{
dev
0000:02:09.0
{
name
VPP-N3-0
num-rx-queues
1
num-tx-queues
2
num-rx-desc
1024
num-tx-desc
1024
}
dev
0000:02:01.0
{
name
VPP-N6-0
num-rx-queues
1
num-tx-queues
2
num-rx-desc
1024
num-tx-desc
1024
}
socket-mem
256,256
}
plugins
{
path
/opt/upf_fp/vpp/lib/vpp_plugins
plugin
default
{
disable
}
plugin
dpdk_plugin.so
{
enable
}
plugin
memif_plugin.so
{
enable
}
plugin
ping_plugin.so
{
enable
}
plugin
router_plugin.so
{
enable
}
plugin
upffp_plugin.so
{
enable
}
plugin
dhcp_plugin.so
{
enable
}
}
plugin_path
/opt/upf_fp/vpp/lib/vpp_plugins
logging
{
default-log-level
debug
default-syslog-log-level
info
}
tap-inject
{
enable
}
trace_tx_rx.pcap
Description: trace_tx_rx.pcap
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