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01-04-2017 06:43 AM
01-04-2017 06:43 AM
Weird Broadcast Storm
Hello All,
I’m having weird issue on 1 of our switches. The switch is a:
ProCurve J9089A Switch 2610-48-PWR
Software revision R.11.116
Every now and then the network on that switch goes down for a few seconds. When I look in the switch the CPU usage was over 90% and the errors are through the roof. All ports receive and send between 1Gb and 4Gb of data in just a few seconds. The Rx errors and Tx Drops go from 0 to as high as 548,000 in seconds. And the weirdest thing is that ports that are NOT connected send and receive data as well. For example, port 1 is down and there is no patch cable in the port. But the counters are as shown below:
Status and Counters - Port Counters for port 1
Name : Office
Link Status : Down
Totals (Since boot or last clear) :
Bytes Rx : 2,630,109,833 Bytes Tx : 3,851,483,045
Unicast Rx : 8,879,255 Unicast Tx : 12,249,457
Bcast/Mcast Rx : 112,936 Bcast/Mcast Tx : 1,673,512
Errors (Since boot or last clear) :
FCS Rx : 22 Drops Tx : 211
Alignment Rx : 30 Collisions Tx : 0
Runts Rx : 0 Late Colln Tx : 0
Giants Rx : 0 Excessive Colln : 0
Total Rx Errors : 42 Deferred Tx : 0
Rates (5 minute weighted average) :
Total Rx (bps) : 0 Total Tx (bps) : 0
Unicast Rx (Pkts/sec) : 0 Unicast Tx (Pkts/sec) : 0
B/Mcast Rx (Pkts/sec) : 0 B/Mcast Tx (Pkts/sec) : 0
Utilization Rx : 0 % Utilization Tx : 0 %
The statistics for all the ports are:
Status and Counters - Port Counters
Flow Bcast
Port Total Bytes Total Frames Errors Rx Drops Tx Ctrl Limit
------- ------------ ------------ ------------ ------------ ----- ------
1 2,186,625... 22,915,160 42 211 off 0
2 2,898,408... 61,699,756 0 88,038 off 0
3 1,177,410... 6,361,223 4 405 off 0
4 369,968,242 16,137,814 2 127 off 0
5 2,949,623... 384,356,113 0 754,306 off 0
6 1,572,208... 2,955,900 268 20 off 0
7 729,817,448 44,298,074 1 157,873 off 0
8 1,775,326... 42,946,214 0 158,578 off 0
9 1,009,498... 29,551,087 0 155,284 off 0
10 3,634,673... 34,794,969 273 155,535 off 0
11 0 0 0 0 off 0
12 3,656,204... 69,785,609 157,969 156,177 off 0
13 648,508,487 2,350,959 3 0 off 0
14 1,686,030... 44,087,419 5 5545 off 0
15 774 4 1 0 off 0
16 4,143,056... 138,345,593 24 161,565 off 0
17 166,970,809 1,194,749 2 32 off 0
18 255,391,213 334,981,928 6 175,149 off 0
19 452,525,822 40,150,657 2591 148 off 0
20 3,349,658... 170,835,943 548,538 22,436 off 0
21 134,446,920 1,100,442 2 27,992 off 0
22 2,415,604... 69,948,238 10 159,945 off 0
23 269,819,677 428,033 0 36 off 0
24 1,000,376... 2,154,290 172 155,175 off 0
25 2,319,175... 3,027,659 1 335 off 0
26 1,323,527 13,993 0 0 off 0
27 1,762,488... 29,318,736 3 158,185 off 0
28 3,132,146... 22,249,274 0 158,164 off 0
29 699,493,241 233,104,023 2 182,939 off 0
30 0 0 0 0 off 0
31 1,247,824... 33,402,322 2 158,164 off 0
32 0 0 0 0 off 0
33 2,253,144... 796,034,730 0 191,424 off 0
34 0 0 0 0 off 0
35 735,813,511 204,875,091 7 173,114 off 0
36 0 0 0 0 off 0
37 0 0 0 0 off 0
38 1,774,448... 5,324,206 2 19 off 0
39 345,588,799 114,448,187 1 86,461 off 0
40 1,435,537... 186,851,033 0 3858 off 0
41 4,189,278... 21,833,785 0 158,165 off 0
42 3,391,831... 18,263,350 5 435,142 off 0
43 2,711,372... 20,032,558 14 75,637 off 0
44 2,708,333... 14,612,315 0 78,136 off 0
45 1,043,213... 8,635,449 0 0 off 0
46 1,002,041... 26,210,443 0 158,165 off 0
47 2,770,060... 100,330,850 1 0 off 0
48 1,169,738... 10,400,757 0 227 off 0
49-Trk1 3,703,533... 3,847,487... 0 863 off 0
50-Trk1 3,737,030... 2,816,498... 0 249 off 0
51 0 0 0 0 off 0
52 0 0 0 0 off 0
Ports 1, 2, 3, 4, 6, 11, 13, 14, 15, 19, 20, 23, 25, 26, 30, 32, 34, 36, 37, 51 and 52 are empty ports with no patch cable in it. Port 20 is even disabled in software and still sending and receiving data.
interface 20
disable
name "Mogelijk defect"
exit
Spanning tree is enabled in the switch. I disabled spanning tree in the switch to see what the counters would look like during a “normal” broadcast storm. I connected 2 ports with a patch cable to create a loop and the counters of a “normal” broadcast storm are shown below.
Multiple Spanning Tree (MST) Information
STP Enabled : No
switch01(config)# show interface
Status and Counters - Port Counters
Flow Bcast
Port Total Bytes Total Frames Errors Rx Drops Tx Ctrl Limit
------- ------------ ------------ ------------ ------------ ----- ------
1 0 0 0 0 off 0
2 0 0 0 0 off 0
3 0 0 0 0 off 0
4 0 0 0 0 off 0
5 159,228,129 667,678 0 154,956 off 0
6 0 0 0 0 off 0
7 70,606,276 557,311 0 154,871 off 0
8 70,559,303 557,212 0 154,871 off 0
9 71,755,868 576,603 0 154,870 off 0
10 70,819,847 557,946 0 154,871 off 0
11 0 0 0 0 off 0
12 70,589,586 557,309 0 154,871 off 0
13 0 0 0 0 off 0
14 0 0 0 0 off 0
15 0 0 0 0 off 0
16 1,017,955... 4,827,501 0 155,220 off 0
17 134,446,994 1,100,430 2 28 off 0
18 155,252,099 697,433 0 154,877 off 0
19 0 0 0 0 off 0
20 0 0 0 0 off 0
21 134,446,920 1,100,442 2 27,992 off 0
22 236,587,767 843,325 0 155,048 off 0
23 0 0 0 0 off 0
24 92,074,859 598,973 0 154,871 off 0
25 0 0 0 0 off 0
26 0 0 0 0 off 0
27 82,049,803 617,718 0 158,169 off 0
28 70,634,741 554,153 0 158,164 off 0
29 1,005,993... 1,556,212 0 158,168 off 0
30 0 0 0 0 off 0
31 70,806,465 554,358 0 158,164 off 0
32 0 0 0 0 off 0
33 70,806,010 554,372 0 158,165 off 0
34 0 0 0 0 off 0
35 133,232,516 672,983 0 158,176 off 0
36 0 0 0 0 off 0
37 0 0 0 0 off 0
38 15,404,065 223,642 0 0 off 0
39 86,343,666 467,160 0 84,169 off 0
40 219,213,861 448,576 0 22 off 0
41 70,575,828 553,964 0 158,165 off 0
42 9,736,418 62,166 0 434,692 off 0
43 70,260,428 421,219 0 75,637 off 0
44 69,823,860 418,717 0 78,133 off 0
45 14,291,113 219,036 0 0 off 0
46 71,510,347 556,221 0 158,165 off 0
47 52,745,885 421,484 0 0 off 0
48 14,291,177 219,037 0 0 off 0
49-Trk1 4,286,713... 6,631,332 0 0 off 0
50-Trk1 2,151,721... 3,460,206 0 0 off 0
51 0 0 0 0 off 0
52 0 0 0 0 off 0
Does anyone have any idea where to start troubleshooting this?
Thank you in advance.
Best regards,
Marc D.
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01-05-2017 12:48 AM
01-05-2017 12:48 AM
Re: Weird Broadcast Storm
Hello All,
I have a small update.
I created a new VLAN yesterday and assigned it to a few ports. Nothing is connected to the ports, but they still get a bunch of errors.
Status and Counters - Port Counters
Flow Bcast
Port Total Bytes Total Frames Errors Rx Drops Tx Ctrl Limit
------- ------------ ------------ ------------ ------------ ----- ------
15 774 4 1 0 off 0
17 166,970,809 1,194,749 2 32 off 0
19 452,525,822 40,150,657 2591 148 off 0
21 134,446,920 1,100,442 2 27,992 off 0
23 269,819,677 428,033 0 36 off 0
Status and Counters - VLAN Information - Ports - VLAN 999
VLAN ID : 999
Name : Isolate
Status : Port-based
Voice : No
Jumbo : No
Port Information Mode Unknown VLAN Status
---------------- -------- ------------ ----------
15 Untagged Learn Down
17 Untagged Learn Down
19 Untagged Learn Down
21 Untagged Learn Down
23 Untagged Learn Down
So, it doesn’t look like a broadcast storm or something like that. Broadcasts should stay in the same VLAN right?