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New Member

N7K interface output discard

Hello Guys

Do you have any ideas regarding N7K interface output discard?

here are   some outputs:

N7K1#  sh int eth7/3

Ethernet7/3 is up

  Dedicated Interface

  Hardware: 10000 Ethernet, address: 44d3.ca31.727a (bia 44d3.ca31.727a)

  Description: "SDL36 - SR31 NC2-NX2-BFN"

  MTU 7300 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

  Auto-Negotiation 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 2week(s) 1day(s)

  Last clearing of "show interface" counters never

  30 seconds input rate 1581904 bits/sec, 1329 packets/sec

  30 seconds output rate 4846240 bits/sec, 1552 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 1.66 Mbps, 1.37 Kpps; output rate 7.23 Mbps, 1.72 Kpps

  RX

    1771847594 unicast packets  23100138 multicast packets  415847 broadcast packets

    1795363579 input packets  772377242887 bytes

    326875 jumbo packets  0 storm suppression packets

    0 runts  0 giants  0 CRC  0 no buffer

    279643 input error  279643 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

    4150213675 unicast packets  7001449 multicast packets  558210 broadcast packets

    4157773334 output packets  1930599703860 bytes

    272590 jumbo packets

    0 output error  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble  24539961 output discard

    0 Tx pause

  6 interface resets

N7K1#

N7K2# sh int eth4/2

Ethernet4/2 is up

  Dedicated Interface

  Hardware: 10000 Ethernet, address: 2894.0ffc.3571 (bia 2894.0ffc.3571)

  Description:

  MTU 7300 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

  Auto-Negotiation 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 2week(s) 1day(s)

  Last clearing of "show interface" counters never

  30 seconds input rate 10165816 bits/sec, 2067 packets/sec

  30 seconds output rate 1754928 bits/sec, 1571 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 6.95 Mbps, 1.78 Kpps; output rate 1.78 Mbps, 1.46 Kpps

  RX

    4145928896 unicast packets  11134106 multicast packets  558547 broadcast packets

    4157621713 input packets  1930741170380 bytes

    269282 jumbo packets  0 storm suppression packets

    0 runts  0 giants  1 CRC  0 no buffer

    16588418 input error  16588417 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

    1771780548 unicast packets  23010768 multicast packets  416317 broadcast packets

    1795207633 output packets  772319216499 bytes

    323684 jumbo packets

    0 output error  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble  43527 output discard

    0 Tx pause

  2 interface resets

version 5.2(1)

interface Ethernet7/3

  description

  switchport

  switchport mode trunk

  switchport trunk allowed vlan 555,598,644,700

  mtu 7300

  no shutdown

N7K1#

version 5.2(1)

interface Ethernet4/2

  description

  switchport

  switchport mode trunk

  switchport trunk allowed vlan 555,598,644,700

  mtu 7300

  no shutdown

N7K2#

Thank you

Alioune

3 REPLIES
New Member

N7K interface output discard

Same problem here. I'm also wondering about some output discards on interfaces connected to some N5Ks and some firewalls. There is no policy-binding on these interfaces and the utilization is max. 70Mbit/s on a 10Gig/s interface.

Some interfaces have the same count of errors although they are connected to different devices.

Has anyone an explanation for this?

Eth1/18               0          0          0          0          0     4177708
Eth1/20               0          0          0          0          0     4177708
Eth1/22               0          0          0          0          0     4177708
Eth1/24               0          0          0          0          0     4177708
Eth1/25               0          0          0          0          0      112427
Eth1/26               0          0          0          0          0    50815310
Eth1/27               0          0          0          0          0      112427
Eth1/28               0          0          0          0          0    50815310
Eth1/29               0          0          0          0          0      112427
Eth1/30               0          0          0          0          0    50815311
Eth1/31               0          0          0          0          0      112427
Eth1/32               0          0          0          0          0    50815311
Eth2/1                0          0          0          0          0           0
Eth2/2                0          0          0          0          0           0
Eth2/3                0          0          0          0          0           0
Eth2/4                0          0          0          0          0           0
Eth2/5                0          0          0          0          0           0
Eth2/6                0          0          0          0          0           0
Eth2/7                0          0          0          0          0           0
Eth2/8                0          0          0          0          0           0
Eth2/10               0          0          0          0          0           0
Eth2/12               0          0          0          0          0           0
Eth2/14               0          0          0          0          0           0
Eth2/16               0          0          0          0          0           0
Eth2/18               0          0          0          0          0     4246082
Eth2/20               0          1          0          1          0     4246082
Eth2/22               0          0          0          0          0     4246082
Eth2/24               0          0          0          0          0     4246082
Eth2/25               0          0          0          0          0     2930664
Eth2/26               0          0          0          0          0     5592939
Eth2/27               0          0          0          0          0     2930664
Eth2/28               0          0          0          0          0     5592939
Eth2/29               0          0          0          0          0     2930664
Eth2/30               0          0          0          0          0     5592939
Eth2/31               0          0          0          0          0     2930664
Eth2/32               0          0          0          0          0     5592939

Thank you

Tobias

Re: N7K interface output discard

Hi
there lot of input errors on the interface
i suggest change the port n sfp n monitor this link

Sent from Cisco Technical Support iPhone App

New Member

Re: N7K interface output discard

Hello,

thank you for your reply. But the input errors are not the errors we are wondering about. But you are right, Alioune should check the SFP/cable.

Any ideas regarding to the output discards?

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