Error when attempting to issue show packet-counters command

gabacho4 · May 7, 2020, 5:47 PM

As indicated in the subject, I am getting an error when I issue a “show packet-counters” command. The error I get is:

TNSR tnsr(config)# show packet-counters
May 7 20:38:45: clixon_xml_parseerror: 198: XML error: xml_parse: line 21: syntax error: at or before: =: XML parse error
May 7 20:38:45: be_downcall: 600: Protocol error: failed BE RPC packet-counters
Protocol error: failed BE RPC packet-counters

In the past I’ve restarted the dataplane service and fixed this issue...I think. No such luck this time around. Any ideas?

jimp · May 7, 2020, 7:35 PM

From a shell, can you try sudo vppctl show node counters? Or from within TNSR you can run that as shell sudo vppctl show node counters. What does that output? Or does it also generate an error?

gabacho4 · May 7, 2020, 7:54 PM

Ran the requested command from tnsr and got output that I would expect to see running the show packet-counters command. What does that tell you Jim?

jimp · May 7, 2020, 8:09 PM

What exactly was in the output? Can you paste it here? I wouldn't expect an error unless maybe there was something unexpected in that output.

gabacho4 · May 7, 2020, 8:16 PM

The outout I get invoking your suggested command is:

TNSR tnsr# shell sudo vppctl show node counters
   Count                    Node                  Reason
     12651               dpdk-input               no error
         6          dhcp-proxy-to-client          DHCP packets for local client.
         3         ip4-dhcp-client-detect         Extract
         1           dhcp-client-process          DHCP discover packets sent
         2           dhcp-client-process          DHCP request packets sent
         2           dhcp-client-process          DHCP bind success
    110611          acl-plugin-out-ip4-fa         new sessions added
   8704269          acl-plugin-out-ip4-fa         existing session packets
   8814880          acl-plugin-out-ip4-fa         checked packets
       179          acl-plugin-out-ip4-fa         restart session timer
        14          acl-plugin-in-ip4-fa          ACL deny packets
    125341          acl-plugin-in-ip4-fa          ACL permit packets
   6507328          acl-plugin-in-ip4-fa          existing session packets
   6629562          acl-plugin-in-ip4-fa          checked packets
       119          acl-plugin-in-ip4-fa          restart session timer
      1701                arp-reply               ARP replies sent
        14                arp-reply               IP4 source address not local to subnet
        16                arp-reply               ARP request IP4 source address learned
         6              arp-disabled              ARP Disabled on this interface
         6                arp-input               IP4 destination address is unset         2                ip4-glean               ARP requests throttled
        90                ip4-glean               ARP requests sent
         1                ip4-input               ip4 ttl <= 1
      5435                ip4-input               Multicast RPF check failed
         1             ip4-icmp-error             hop limit exceeded response sent     13670             ip4-icmp-input             echo replies sent
       664               lldp-input               lldp packets received on disabled interfaces
      3354                llc-input               unknown llc ssap/dsap
        22       GigabitEthernet4/0/0-output      interface is down
        27     TenGigabitEthernet6/0/0-output     interface is down
        27     TenGigabitEthernet6/0/1-output     interface is down
        27     TenGigabitEthernet8/0/0-output     interface is down

I tried the normal command once more for kicks and still get the error I reported earlier. Also, an running an up to date 20.1-1 instance in an SG-5100 just have all the variables.

jimp · May 7, 2020, 8:17 PM

1 ip4-input ip4 ttl <= 1

I bet it's that.

Are there really missing line breaks in a couple places there? Or was that just a copy/paste issue?

gabacho4 · May 7, 2020, 8:18 PM

Screenshot from my phone just to avoid any copy and paste format fun.

gabacho4 · May 7, 2020, 8:20 PM

Sorry about those breaks. I hadn't noticed them when I copied from the terminal.

jimp · May 7, 2020, 8:22 PM

That's OK, I figured it was just a copy/paste issue but wanted to be certain.

I'll work that info into a bug report, thanks!

gabacho4 · May 7, 2020, 8:25 PM

Thanks for your understanding. So I've helped find a bug? Cool deal. Glad I could contribute to the cause. Any idea how long you think that one would take to correct? I'm not sure where it would fall on your list of priorities. In the meantime, I can always run the command you suggested. Pleasure interacting with you yet again!

jimp · May 7, 2020, 8:39 PM

Actually it looks like we already had one open for that. It's slated to be fixed in our next release (20.06) which isn't too far off.

In the meantime, you can run the vppctl version of the command to get the output.

gabacho4 · May 7, 2020, 8:41 PM

Way to make a guy feel redundant

audian · May 8, 2020, 6:01 AM

@gabacho4 - Thanks for all the great feedback and questions!

gabacho4 · May 8, 2020, 6:01 AM

@audian no problem at all! I'm enjoying the TNSR experience and look forward to seeing the fixes and improvements you all are working on.