Re: Cisco Network Assistant mismatch of port settings

jamesedmonds · ‎09-30-2017

Hi All,

Not sure if I am missing something, but when I use Cisco network assistant to have a look at port settings for one of my switches (Trying to set ESXi port speed to auto which is failing, so investigating negotiation settings on the switch), it seems the port settings window when right clicking on the port and viewing port settings, does not match what is shown in the global port settings page:

Top pane is global port settings, and lower pane is from when I right click on the port from the front panel window.

As you can see, the lower pane says the speed is 10, but global port settings says auto. Other ports don't seem to have the mismatch, so I am now unsure which of the two windows is giving me correct information.

Below is output from show interface for problematic port and non problematic port:

CB-SW-02#show interface GigabitEthernet2/8
GigabitEthernet2/8 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet Port, address is 0024.1440.9ef7 (bia 0024.1440.9e                                                                                                                                                             f7)
  Description: FLX-ESXi-02-MGMT
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX
  input flow-control is on, output flow-control is on
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 4213818
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 145000 bits/sec, 46 packets/sec
  5 minute output rate 738000 bits/sec, 173 packets/sec
     356200043 packets input, 225625467309 bytes, 0 no buffer
     Received 8512064 broadcasts (3020115 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     8817025238 packets output, 2523569590042 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
CB-SW-02#show interface GigabitEthernet2/9
GigabitEthernet2/9 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet Port, address is 0024.1440.9ef8 (bia 0024.1440.9ef8)
  Description: *** Server Access Port ***
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Auto-duplex, Auto-speed, link type is auto, media type is 10/100/1000-TX
  input flow-control is off, output flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 160940
  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
     9217495 packets input, 2493949841 bytes, 0 no buffer
     Received 39883 broadcasts (38 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     8059464519 packets output, 2073197862973 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

This confuses me even more, as it doesn't show auto, or 10, it shows full duplex 1000Mb/s.

Is the gui wrong, or am I misinterpreting what I am reading?

Cheers

Eds

Georg Pauwen · ‎09-30-2017

Hello,

the reading is probably related to what is connected on the other end. If you disconnect the device, do you get the correct value (auto) ?

jamesedmonds · ‎10-01-2017

Hi,

The other end is an esxi host that is currently to 1000Mb, and is what I am trying to switch to auto.
This times out though, which I suspect is because the port isn’t set to auto.

I might try a physical disconnect tomorrow, but still seems a little odd to me.

Cheers
Eds

jamesedmonds · ‎11-10-2017

Well it's a bit late, but the issue here seems to lie with vmware.

When I tried to change to auto negotiate for one NIC on one host via vcenter, it would fail. If I then did the same directly via the management interface for the host, it would complete successfully.

The modify port settings box still shows a speed of 10, but I believe this erroneous as vmware does now show auto negotiated at 1000Mbs.

Thanks

Eds