Catalyst C9200-24T: rate is always 0

Exonix · ‎05-31-2021

Hi everyone.

we have Switch C9500-48Y4C and several Switches C9200-24T are connected to it.

On the Switch C9500-48Y4C I see in- and outgoing traffic to other switches:

#sh inter Twe 1/0/3
TwentyFiveGigE1/0/3 is up, line protocol is up (connected)
  Hardware is Twenty Five Gigabit Ethernet, address is xxxx.xxxx.xxxx (bia xxxx.xxxx.xxxx)
  Description: Uplink C9200-24T-1
  MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 5/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 10Gb/s, link type is auto, media type is SFP-10GBase-SR
  input flow-control is on, output flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:08, output 00:00:00, output hang never
  Last clearing of "show interface" counters 45w2d
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 201222000 bits/sec, 16600 packets/sec
  5 minute output rate 2021000 bits/sec, 3700 packets/sec
     50957325969 packets input, 43890419464368 bytes, 0 no buffer
     Received 11105742 broadcasts (5141354 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 5141354 multicast, 0 pause input
     0 input packets with dribble condition detected
     197459344960 packets output, 281313050020957 bytes, 0 underruns
     0 output errors, 0 collisions, 3 interface resets
     1 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
                  D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
C9200-24T-1
                 Twe 1/0/3         158              S I   C9200-24T Ten 1/1/1

but I don't see anything on other switches:

#sh inter Te1/1/1
TenGigabitEthernet1/1/1 is up, line protocol is up (connected)
  Hardware is Ten Gigabit Ethernet, address is yyyy.yyyy.yyyy (bia yyyy.yyyy.yyyy)
  Description: C9200-48T-CORE - Port Twe1/0/3
  MTU 1500 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Full-duplex, 10Gb/s, link type is auto, media type is SFP-10GBase-SR
  input flow-control is on, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:01, output 00:00:00, output hang never
  Last clearing of "show interface" counters 3w0d
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

#sh version
Cisco IOS XE Software, Version 16.12.01
Cisco IOS Software [Gibraltar], Catalyst L3 Switch Software (CAT9K_LITE_IOSXE), Version 16.12.1, RELEASE SOFTWARE (fc4)

Every night we have almost 1Gbit traffic for two hours (backup). I see it in our Monitoring system (basic MRTG) for C9500-48Y4C, but I don't see if for C9200-24T. What is wrong?

Thank you in advance!

pieterh · ‎06-02-2021

do you mean you are manually chenckin the switch at night ?

5 minute input rate 0 bits/sec, 0 packets/sec

the rate in this output is over the last 5 minutes, so in the morning this will never show anything about the activity done at night!

if you mean your(MRTG) monitoring system does not show anything, then it may be you configured this wrong
make sure MRTG is querying the correct OID.
this may have been renumbered at some time e.g. because of switch software upgrade?

Exonix · ‎06-03-2021

Hi Pieterh,
No, the MRTG checks the switch 24\7, I do this manually during a working day when we also have a traffic, but in both cases the rate is always 0. The "show interface XXX" above was made at the same time. Both interfaces of the switches are connected to each other. One interface shows a traffic, but another one - doesn't, although current traffic is 250 Mbit/sec.