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AWILLIAMSON
1 Copper

SFP+ Non-qualified pluggable media present Question on S4810

Hi we have some S4810 switches in our DC.

We are getting some packet loss messages from our alerting system.

Looking at the server we cant see any issues.

On looking at the switch using the show interface command 

We are seeing the following Non-qualified pluggable media present, SFP+ type is 10GBASE-CU2M

Should we be worries about this ? or should the DAC be replaced ?

The DAC's are not dell branded could someone point me to a compatibility list for the SFP+'s for the S4810 Force10 switches.

 

Switches are running 9.11(2.6)

 

TenGigabitEthernet 0/37 is up, line protocol is up
Description: ESXi-iSCSI
Hardware is DellEth, address is 00:01:e8:XX:XX:XX
Current address is 00:01:e8:XX:XX:XX
Non-qualified pluggable media present, SFP+ type is 10GBASE-CU2M
Medium is Twinax Copper
Interface index is 1053316
Internet address is not set
Mode of IPv4 Address Assignment : NONE
DHCP Client-ID :0001e8XXXXXX
MTU 9216 bytes, IP MTU 9198 bytes
LineSpeed 10000 Mbit
Flowcontrol rx on tx off
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of "show interface" counters 44w4d7h
Queueing strategy: fifo
Input Statistics:
1670525726303 packets, 4671543338480154 bytes
9021174031 64-byte pkts, 298128399241 over 64-byte pkts, 391407413 over 127-byte pkts
2314001588 over 255-byte pkts, 59715533143 over 511-byte pkts, 1300955210887 over 1023-byte pkts
8872868203 Multicasts, 1 Broadcasts, 1661652858091 Unicasts
0 runts, 0 giants, 8872868203 throttles
0 CRC, 0 overrun, 0 discarded
Output Statistics:
816395164534 packets, 2349076520595327 bytes, 0 underruns
24230119733 64-byte pkts, 320580798188 over 64-byte pkts, 7098222206 over 127-byte pkts
2975671608 over 255-byte pkts, 5734875842 over 511-byte pkts, 455775476957 over 1023-byte pkts
44286817 Multicasts, 12864936 Broadcasts, 816338012781 Unicasts
0 throttles, 0 discarded, 0 collisions, 0 wreddrops
Rate info (interval 299 seconds):
Input 1602.00 Mbits/sec, 116950 packets/sec, 16.20% of line-rate
Output 492.00 Mbits/sec, 19107 packets/sec, 4.95% of line-rate
Time since last interface status change: 44w4d7h

 

Thanks,

Anthony

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4 Replies
AWILLIAMSON
1 Copper

Dell Force10 - SFP+ Non-qualified pluggable media present.

Hi we have some Dell Force10 - S4810 switches in our DC. We are getting some packet loss messages from our alerting system. Looking at the server we cant see any issues. On looking at the switch using the show interface command We are seeing the following Non-qualified pluggable media present, SFP+ type is 10GBASE-CU2M Should we be worries about this ? or should the DAC be replaced ? The DAC's are not dell branded could someone point me to a compatibility list for the SFP+'s for the S4810 Force10 switches. Switches are running 9.11(2.6)
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bealdrid2
2 Iron

Re: Dell Force10 - SFP+ Non-qualified pluggable media presen

The switch is basically just saying the DAC's are not DELL branded.  In my experience working with DELL networking/storage/server equipment over the past several years, I have used a wide variety of third party TwinAx/DAC cables without issue.  Typically switches are more particular about the brand/programming of optical transceivers, but for the most part TwinAx is similar to Cat5/6 UTP cabling in that most brands can be used across different vendor's equipment without issue.  I highly doubt your packet loss is a result of the non-DELL branded cable, especially given that the switch is not reporting any discards/drops.  You could always swap that one cable out just to be sure, but I'd be surprised if that's it.

I'd try running "show interface | grep discard" to see if any uplinks/other interfaces are showing drops.  If not, I suspect the issue is somewhere else.

AWILLIAMSON
1 Copper

Re: Dell Force10 - SFP+ Non-qualified pluggable media presen

Thanks,

I only see 1 CRC and 1 Discarded on the FortyGigE port.

We will look over the config, drivers and firmware level on the hosts to see if an issues are here.

The hosts we see the packet loss on will be rebuilt to new version of esxi in the coming weeks.

 

fortyGigE 1/53 is up, line protocol is up

Port is part of Port-channel 1

Description: X

Hardware is DellEth, address is f4:8e: XX:XX:XX

    Current address is f4:8e:38: XX:XX:XX

Non-qualified pluggable media present, QSFP type is 40GBASE-CR4

Interface index is 2105349

Internet address is not set

Mode of IPv4 Address Assignment : NONE

DHCP Client-ID :f48e38XXXXXX

MTU 9216 bytes, IP MTU 9198 bytes

LineSpeed 40000 Mbit

Flowcontrol rx on tx off

ARP type: ARPA, ARP Timeout 04:00:00

Last clearing of "show interface" counters 44w5d4h

Queueing strategy: fifo

Input Statistics:

     1529755797532 packets, 6949073574946332 bytes

     0 64-byte pkts, 221948466063 over 64-byte pkts, 1103288979 over 127-byte pkts

     1379924957 over 255-byte pkts, 25386340116 over 511-byte pkts, 1279937777417 over 1023-byte pkts

     1729471 Multicasts, 1233318 Broadcasts, 1529752834743 Unicasts

     0 runts, 0 giants, 0 throttles

     0 CRC, 0 overrun, 0 discarded

Output Statistics:

     735772970385 packets, 2335981230074881 bytes, 0 underruns

     18478300 64-byte pkts, 312458142612 over 64-byte pkts, 9229175997 over 127-byte pkts

     2699713732 over 255-byte pkts, 7322089602 over 511-byte pkts, 404045370142 over 1023-byte pkts

     39955754 Multicasts, 119561594 Broadcasts, 735613453037 Unicasts

     0 throttles, 0 discarded, 0 collisions, 0 wreddrops

Rate info (interval 299 seconds):

     Input 3465.00 Mbits/sec,      93137 packets/sec, 8.70% of line-rate

     Output 667.00 Mbits/sec,      24969 packets/sec, 1.68% of line-rate

Time since last interface status change: 44w4d8h

 

 

fortyGigE 1/54 is up, line protocol is up

Port is part of Port-channel 1

Description: X

Hardware is DellEth, address is f4:8e:38:XX:XX:XX

    Current address is f4:8e:38:XX:XX:XX

Non-qualified pluggable media present, QSFP type is 40GBASE-CR4

Interface index is 2105861

Internet address is not set

Mode of IPv4 Address Assignment : NONE

DHCP Client-ID :f48e38XXXXXX

MTU 9216 bytes, IP MTU 9198 bytes

LineSpeed 40000 Mbit

Flowcontrol rx on tx off

ARP type: ARPA, ARP Timeout 04:00:00

Last clearing of "show interface" counters 44w5d5h

Queueing strategy: fifo

Input Statistics:

     913719463299 packets, 4712647130501785 bytes

     1 64-byte pkts, 141334309680 over 64-byte pkts, 236716837 over 127-byte pkts

     321344970 over 255-byte pkts, 13089596022 over 511-byte pkts, 758737495789 over 1023-byte pkts

     1734521 Multicasts, 2329 Broadcasts, 913717726448 Unicasts

     0 runts, 0 giants, 0 throttles

     1 CRC, 0 overrun, 1 discarded

Output Statistics:

     799941925689 packets, 2700877526021858 bytes, 0 underruns

     13651186 64-byte pkts, 435473018575 over 64-byte pkts, 10293525864 over 127-byte pkts

     2380528691 over 255-byte pkts, 7755028731 over 511-byte pkts, 344026172641 over 1023-byte pkts

     41032301 Multicasts, 60284992 Broadcasts, 799840608396 Unicasts

     0 throttles, 0 discarded, 0 collisions, 0 wreddrops

Rate info (interval 299 seconds):

     Input 921.00 Mbits/sec,      23474 packets/sec, 2.31% of line-rate

     Output 1023.00 Mbits/sec,      45383 packets/sec, 2.58% of line-rate

Time since last interface status change: 44w5d5h

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Re: Dell Force10 - SFP+ Non-qualified pluggable media presen

1. What exactly is port 0/37 connected to? It says ESXi-iSCSI, but it is a server or target device? 2. Port 0/37 (inbound) is seeing a ton of throttles (i.e. flow control packets). If throttles are at a high rate, then this will impact traffic and even cause timeouts/retransmission related issues. To get a better gauge on the throttle rate, you could clear the counters and check the rate to see how fast the throttles are coming in. Not too worried about the cable, whereas there are no CRCs on the two ports you listed. (except 1).
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