Orion NPM 10.3 is reporting transmit discards on a lightly used10G ethernet interface ~ 1 million/hr on a Nexus 5596 switch - System version: 5.2(1)N1(3).
The discards are not continuous, rather they occur sporadically according to Orion.
Logging onto the switch, I see no evidence of any type of transmit discards on the interface in question.
I'm beginning to question the accuracy of the statistics being reported by NPM ?!?
AS86# sh interf eth 1/5
Ethernet1/5 is up
Dedicated Interface
Belongs to Po50
Hardware: 1000/10000 Ethernet, address: 547f.eece.xxxx (bia 547f.eece.xxxx)
Description: [to_X86]
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA
Port mode is trunk
full-duplex, 10 Gb/s, media type is 10G
Beacon is turned off
Input flow-control is off, output flow-control is off
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
Last link flapped 5week(s) 1day(s)
Last clearing of "show interface" counters never
30 seconds input rate 29066544 bits/sec, 638 packets/sec
30 seconds output rate 28721848 bits/sec, 774 packets/sec
Load-Interval #2: 5 minute (300 seconds)
input rate 25.88 Mbps, 528 pps; output rate 41.46 Mbps, 970 pps
RX
3275948875 unicast packets 748892 multicast packets 192869 broadcast packets
3276890636 input packets 19581540017667 bytes
2488321762 jumbo packets 8212622 storm suppression bytes
0 runts 0 giants 0 CRC 0 no buffer
0 input error 0 short frame 0 overrun 0 underrun 0 ignored
0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop
0 input with dribble 0 input discard
0 Rx pause
TX
5949444361 unicast packets 210888 multicast packets 86652 broadcast packets
5949741901 output packets 32329239916867 bytes
3850347240 jumbo packets
0 output errors 0 collision 0 deferred 0 late collision
0 lost carrier 0 no carrier 0 babble 0 output discard
0 Tx pause
2 interface resets
AS86# sh platform fwm info pif eth 1/5
dump pif info: ifindex 0x1a004000 dump_all 0 verbose 1
Eth1/5: slot 0 port 4 state 0x6 pi_if 0x98e293c fwimpd ctx 0x899f18c
Eth1/5: oper_mode 0x100000 rcvd_rbind: No
Eth1/5: belongs to pc 'Po50'
Eth1/5: iftype 0x1 encap 0x1 bound_if? N #lifs 1 fwimpd ctx (nil)
Eth1/5: unique_fcf_mac? N fcf_mac 0 0. 0 0. 0 0
Eth1/5: lif_blk(pi) 0x97657bc foo vif_id_alloc_bmp 0x99b4aa4
Eth1/5: 0
Eth1/5: cfg_lif_blk_size 0 lif_blk_base(pi) 0 lif_blk_size(pi) 4096
Eth1/5: cfg_lif_blk_size(pi) 0
Eth1/5: if_flags 0x0 num_sub_lif_tbls 0 Num HIFs pinned 0
Eth1/5: sat lif_blk tbl base 1, size 4095
Eth1/5: max_hifpc_mbrs 0, max_hif_ports 0
Eth1/5: storm control (u: 0.10 m: 0.10 b: 0.10)
Eth1/5: SAT_HIF Port?: No
Eth1/5 pd: slot 0 logical port num 4 slot_asic_num 0 global_asic_num 0 fwm_inst 4 fc 0
Eth1/5 pd: pif_type 'data eth'(1) hw_present 1 port map idx 9
Eth1/5 pd: fabric a info: voq 0-7 port_id 92 connected 1 up 1
Eth1/5 pd: fabric b info: voq 0-7 port_id 92 connected 1 up 1
Eth1/5 pd: subported 0 primary 1 atherton 0
Eth1/5 pd: sup_src_dst_if 7 lif_blk -1--1
Eth1/5 pd: policer info: uc (sel 14) mc (sel 13) bc (sel 12)
Eth1/5 pd: mac-addr 547f.eece.xxxx
Eth1/5 pd: niv_idx 12
Eth1/5 pd: tx stats: bytes 32426201560732 frames 5950038156 discard 0 drop 0
Eth1/5 pd: rx stats: bytes 19582331248970 frames 3277001563 discard 0 drop 45722
Eth1/5 pd fcoe: tx stats: bytes 0 frames 0 discard 0 drop 0
Eth1/5 pd fcoe: rx stats: bytes 0 frames 0 discard 0 drop 0
Eth1/5 pd cdce_addr: switchid 1086 sub-switchid 0, endnodeid 0
Eth1/5 pd cdce_addr: Mcast 0, locally-adm 1, OutOfOrder/don't learn 0
Eth1/5 pd cdce_addr: localid 15, pbp_idx 0
What am I missing here?