There is something in the DHCP OFFER the client does not like and moves back to new DHCP session. Or the DHCP OFFER never made it to the client.
Hemant From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Thakur, Anagha Sent: Thursday, March 02, 2023 4:02 PM To: vpp-dev@lists.fd.io Subject: Re: [vpp-dev] FW: Bug: DHCP Client not sending DHCP REQUEST using VPP v22.02 I do see DHCP Offer in the packet tracer from the Server which I have set up on the other side. But VPP does not send any DHCP Request out, instead I always see that VPP continuously keeps sending DHCP Discovery. I have attached tx and rx pcap trace in my prevous email. Best Regards, Anagha _____ From: vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> <vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> > on behalf of Dave Barach via lists.fd.io <vpp=barachs....@lists.fd.io <mailto:vpp=barachs....@lists.fd.io> > Sent: Thursday, 2 March 2023, 19:15 To: vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> <vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> > Subject: Re: [vpp-dev] FW: Bug: DHCP Client not sending DHCP REQUEST using VPP v22.02 Do you see a response to the DHCP Discover packets? What does the vpp packet tracer show? Thanks... Dave On Mar 2, 2023, at 7:03 AM, Thakur, Anagha <anagha.tha...@siemens.com <mailto:anagha.tha...@siemens.com> > wrote: 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 <vpp_show_version.txt> <trace_tx_rx.pcap>
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