Hello,
when i connect a Siemens Sentron PAC3200 (that is an industrial power sensor device) to a WS-C2960X-48FPD-L switchport, i get about 50% packet loss on that port.
The port shows symbol errors.
If i connect any other cheap desktop switch/hub between the PAC3200 and the 2960x switch port, then everything works fine, so there is no cabling issue or port defect.
The problem seems to only exist when directly connecting the PAC3200 to the 2960x switch port. It seems to be an incompatibility between those devices!
The switchport autonegs to 10Mbit/full-duplex.
I think i might have a variant of this bug: CSCuw37826.
However on different Hardware:
Model revision number : G0
Motherboard revision number : C0
Model number : WS-C2960X-48FPD-L
Top Assembly Revision Number : D0
Version ID : V02
Daughterboard revision number : A0
Hardware Board Revision Number : 0x12
What can i do to get a working connection?
Best Regards
Matthias
show interface ...
Hardware is Gigabit Ethernet, address is ...
Description: SENTRON-PAC3200
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 01:05:50, output hang never
Last clearing of "show interface" counters 1d05h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 12
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
6410 packets input, 858176 bytes, 0 no buffer
Received 150 broadcasts (61 multicasts)
0 runts, 0 giants, 0 throttles
3102 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 61 multicast, 0 pause input
0 input packets with dribble condition detected
219610 packets output, 21845453 bytes, 0 underruns
0 output errors, 0 collisions, 1 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
sho controller ...
Transmit GigabitEthernet1/0/11 Receive
798122799 Bytes 1734056 Bytes
252038 Unicast frames 13632 Unicast frames
2596412 Multicast frames 61 Multicast frames
8335121 Broadcast frames 98 Broadcast frames
0 Too old frames 1160841 Unicast bytes
3 Deferred frames 14675 Multicast bytes
0 MTU exceeded frames 11022 Broadcast bytes
0 1 collision frames 0 Alignment errors
0 2 collision frames 0 FCS errors
0 3 collision frames 0 Oversize frames
0 4 collision frames 0 Undersize frames
0 5 collision frames 0 Collision fragments
0 6 collision frames
0 7 collision frames 4212 Minimum size frames
0 8 collision frames 16038 65 to 127 byte frames
0 9 collision frames 31 128 to 255 byte frames
0 10 collision frames 22 256 to 511 byte frames
0 11 collision frames 17 512 to 1023 byte frames
0 12 collision frames 77 1024 to 1518 byte frames
0 13 collision frames 0 Overrun frames
0 14 collision frames 0 Pause frames
0 15 collision frames
0 Excessive collisions 6606 Symbol error frames
0 Late collisions 0 Invalid frames, too large
0 VLAN discard frames 0 Valid frames, too large
0 Excess defer frames 0 Invalid frames, too small
9140648 64 byte frames 0 Valid frames, too small
1826958 127 byte frames
135827 255 byte frames 0 Too old frames
63761 511 byte frames 0 Valid oversize frames
3694 1023 byte frames 0 System FCS error frames
12683 1518 byte frames 0 RxPortFifoFull drop frame
0 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames
