Dear Rubina, looking at the outputs, there are a few anomalies that hopefully you can clarify:
1) the max session count is 1000000. The latest master has the default limit of 500000, and I do not see any startup config parameters changing that. Which version are you testing with/building off ? 2) there are 6 fa_conn_list_head elements in each worker for your outputs. That number was initially 3, and in the early spring when I introduced the purgatory list and the reserved unused list this number has increased to 5. The vectors are initialized at a start with a constant, so I am wondering why your outputs have a different number. Would be able to comment on these observations ? Thank you! --a On 9/17/18, Rubina Bianchi <r_bian...@outlook.com> wrote: > * Dear VPP > > I ran a test on VPP configured with permit+reflect ACl rules with t-rex. In > this test, I put two interfaces on one bridge-domain and had an ACL on all > of its input and output interfaces. The ACL had just one rule which was > allowing any traffic. I ran my test until VPP's session table was full. I > run t-rex whith following command: > > "./t-rex-64 -f cap2/sfr.yaml -m 10 -d 10000" > > > After a couple of days, I took another test on VPP. I tried to establish a > ssh session between two clients via my VPP. But session could not be > established. When I checked VPP trace, All of my ssh packets where dropped > due to following error: > > "acl-plugin-in-ip4-l2: too many sessions to add new" > > when I checked VPP's session table, I realized that it was full. No session > where deleted since my previous test and no session where going to be added > to session table.I also checked my /var/log/hawk.log file and saw following > error: > > "acl_fa_node_fn:516: BUG: session LSB16(sw_if_index) and 5-tuple > collision!" > > I could not fix this problem so I restarted my VPP service. After that, > I could not reproduce this state again. Does anyone have any idea on > what my problem on VPP was? > > I attached my hawk.log, vpp trace, "vppctl sh acl-plugin sessions" output > and startup.conf file to this email. > > > > >
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