06-30-2018 03:35 PM - edited 03-08-2019 03:31 PM
Is the Catalyst 2960 switch capable of generating logs about how it handles traffic on a port (why it drops it, for example)? How can I turn this on?
07-01-2018 01:28 AM
07-01-2018 04:38 AM
Hello Leo
Thanks for the response. I'll post the output of that command soon as I can.
What's happening is a little weird (and baffling) though (at least to me). I was hoping for some general pointers on the kind of debug facilities available on this device.
Here are some details, if you are interested.
I'll post the output you wanted tomorrow.
07-03-2018 09:28 AM
Here is the output of "show interface <port> control".
GigabitEthernet0/9 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 1c17.d35d.a789 (bia 1c17.d35d.a789)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 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 21:29:08, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 2000 bits/sec, 2 packets/sec
5 minute output rate 2000 bits/sec, 2 packets/sec
59570 packets input, 13247207 bytes, 0 no buffer
Received 56107 broadcasts (46540 multicasts)
0 runts, 0 giants, 0 throttles
1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 46540 multicast, 0 pause input
0 input packets with dribble condition detected
101671 packets output, 12670936 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 PAUSE output
0 output buffer failures, 0 output buffers swapped out
Transmit GigabitEthernet0/9 Receive
12672236 Bytes 13247463 Bytes
10133 Unicast frames 3467 Unicast frames
91426 Multicast frames 46540 Multicast frames
115 Broadcast frames 9567 Broadcast frames
0 Too old frames 229210 Unicast bytes
0 Deferred frames 10271782 Multicast bytes
0 MTU exceeded frames 2728941 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 7187 Minimum size frames
0 8 collision frames 7619 65 to 127 byte frames
0 9 collision frames 37831 128 to 255 byte frames
0 10 collision frames 2589 256 to 511 byte frames
0 11 collision frames 4329 512 to 1023 byte frames
0 12 collision frames 20 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 1 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
53162 64 byte frames 0 Valid frames, too small
5780 127 byte frames
40950 255 byte frames 0 Too old frames
1704 511 byte frames 0 Valid oversize frames
78 1023 byte frames 0 System FCS error frames
0 1518 byte frames 0 RxPortFifoFull drop frame
0 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames
07-01-2018 06:50 AM
Hello,
on a side note, the port by itself if left a its default setting wouldn't drop any IGMP traffic.
You can only globally debug igmp (debug ip igmp)...
07-01-2018 04:59 PM
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