![]() Layer two troubleshooting can be dealt with in term of the irregularities in the ARP entries received by using the arp aspect of the global counter with the command show counter global filter aspect arp > show counter global filter aspect arpĮlapsed time since last sampling: 8.330 secondsįlow_arp_pkt_rcv 42685 0 info flow arp ARP packets receivedįlow_arp_pkt_xmt 1875 0 info flow arp ARP packets transmittedįlow_arp_pkt_replied 6995 0 info flow arp ARP requests repliedįlow_arp_pkt_learned 17 0 info flow arp ARP entry learnedįlow_arp_rcv_gratuitous 494 0 info flow arp Gratuitous ARP packets receivedįlow_arp_resolve_xmt 1843 0 info flow arp ARP resolution packets transmitted Logical interface counters read from CPU: The same counter can be used to check data plane interface statistics as well. This is used to assist in troubleshooting connectivity. To view management interface statistics use show counter interface management command. #Controlplane app updateLicense information fetched from update server: 0 This command is useful when suspecting a hardware issue that would require RMA replacement. The counters can be used to view management server statistics (number of logs written to trigger counters assigned to each management server process) To troubleshoot Management Server Statistics, use show counter management-server. A few examples are: error, informational and warning. > show counter global filter delta yes severity dropĮlapsed time since last sampling: 55.446 secondsįlow_ipv6_disabled 3 0 drop flow parse Packets dropped: IPv6 disabled on interfaceįlow_fwd_l3_mcast_drop 2 0 drop flow forward Packets dropped: no route for IP multicastįlow_host_service_deny 26 0 drop flow mgmt Device management session deniedįlow_host_service_unknown 2 0 drop flow mgmt Session discarded: unknown application to control planeĪpart from the severity drop, there are various other severities that this command can be used for based on the scenario. ![]() Using the above command with delta option allows viewing packets dropped since the last time the command was issued. Url_request_pkt_drop 204 0 drop url pktproc The number of packets get dropped because of waiting for url category request Proxy_offload_check_err 1030 0 drop proxy pktproc The number offload proxy setup check failed because of not SYN or no certificate Name value rate severity category aspect descriptionįlow_rcv_err 98 0 drop flow parse Packets dropped: flow stage receive errorįlow_rcv_dot1q_tag_err 1 0 drop flow parse Packets dropped: 802.1q tag not configuredįlow_no_interface 263 0 drop flow parse Packets dropped: invalid interfaceįlow_ipv6_disabled 30622 0 drop flow parse Packets dropped: IPv6 disabled on interfaceįlow_policy_nat_land 6732 0 drop flow session Session setup: source NAT IP allocation result in LAND attackįlow_fwd_l3_mcast_drop 2756 0 drop flow forward Packets dropped: no route for IP multicastįlow_fwd_l3_ttl_zero 4 0 drop flow forward Packets dropped: IP TTL reaches zeroįlow_fwd_l3_noroute 5 0 drop flow forward Packets dropped: no routeįlow_fwd_l3_noarp 1 0 drop flow forward Packets dropped: no ARPįlow_action_reset 1 0 drop flow pktproc TCP clients reset via responding RSTįlow_arp_rcv_err 162 0 drop flow arp ARP receive errorįlow_host_decap_err 412 0 drop flow mgmt Packets dropped: encapsulation error to control planeįlow_host_service_deny 153865 0 drop flow mgmt Device management session deniedįlow_host_service_unknown 2762 0 drop flow mgmt Session discarded: unknown application to control planeįlow_tunnel_encap_err 33 0 drop flow tunnel Packet dropped: tunnel encapsulation errorĪppid_lookup_invalid_flow 1 0 drop appid pktproc Packets dropped: invalid session state > show counter global filter severity dropĮlapsed time since last sampling: 34.999 seconds ![]() Repeating the command multiple times helps narrow down the drops. To troubleshoot dropped packets show counter global filter severity drop can be used. ![]() Counters are a very useful set of indicators for the processes, packet flows and sessions on the PA firewall and can be used to troubleshoot various scenarios. ![]()
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