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| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
|
| Created: | Wed Nov 13 1991 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 4455 |
| Total number of notes: | 16761 |
3004.0. "Switch900's counters are reliable ?" by TKTVFS::YAMAUCHI_Y () Fri Nov 24 1995 05:25
Is there any trouble with SW900's counter?
I am collecting SW900's counters of a customer.
In the case below,node A is attempting to trasmit its data to node B.
HUB900 #1
+ -------------------------------------------------+
| Flexible channel |
| |=======| |=======| |
| +---------+-+ +-+------+-+ +-+------+-+ |
| | B | | A B | | A | |
| | SW900EF | | SW900EF | | SW900EF | |
| | (SW1) | | (SW2) | | (SW3) | |
| | | | | | | |
| | | | PORT3 | | | |
| | | | <>--+ | | | |
| | A | | | | | | |
| +-+---------+ +------|---+ +--------+-+ |
+----|--------------------|----------------|-------+
| | |
| +---+----+ |
MIC | cable | NODE A | MIC | cable
| +--------+ |
| | HUB900 #2
+ ---|-------------------------------------|-------+
| | Flexible channel | |
| | |=======| |=======| | |
| +-+-------+-+ +-+------+-+ +-+------+-+ |
| | B A | | B A | | B A | |
| | SW900EF | | SW900EF | | SW900EF | |
| | (SW4) | | (SW5) | | (SW6) | |
| | | | | | | |
| | | | PORT3 | | | |
| | | | <>--+ | | | |
| | | | | | | | |
| +-----------+ +------|---+ +----------+ |
+-------------------------|------------------------+
SW900EF ver 1.4 |
HUB900 ver 3.1 +---+----+
| NODE B |
+--------+
The command I use is
MCC> show snmp SW1 interface * all counter ,by pass=public-6
Node A periodically transmits its data to node B,once in an hour,about 40M
bytes. In this case ,I think SW2's port1's counter ifOutOctets should be the
same with SW1's port1's counter ifInOctets. But these counters are not the
same.
SW2's port1's counter ifOutOctets increments exactly, but SW1's port1's
counter ifInOctets does not increments sometimes. Following counters are
these counters.
SW2 PORT3 COUNTER
TIME ifOutOctets ifInOctets
"05:05" 176673 10045
"05:15" 979294 40632335 <- data node A transmitted to node B
"05:25" 176491 10424
"05:35" 189383 9834
"05:45" 187974 9706
"05:55" 192828 9706
"06:05" 188877 9642
"06:15" 991411 40613498
"06:25" 268094 10001
"06:35" 191918 9706
"06:45" 188906 9642
"06:55" 191884 9706
"07:05" 188258 9706
"07:15" 992464 40609535
"07:25" 190979 9578
"07:35" 193712 9706
"07:45" 508384 9578
"07:55" 192126 9770
"08:05" 188560 10001
"08:15" 995923 40610435
"08:25" 190266 9578
SW2 PORT1 COUNTER
TIME ifOutOctets ifInOctets
"04:55" 113258 847905
"05:05" 41008623 <- 1718216 node A's data to the ring
"05:15" 61734 709409
"05:25" 50732 683766
"05:35" 66423 748283
"05:45" 45725 726807
"05:55" 80602 886407
"06:05" 41100998 2264841
"06:15" 66509 604459
"06:25" 92106 658294
"06:35" 153414 805368
"06:45" 86191 766960
"06:55" 119636 1105822
"07:05" 41018069 2790480
"07:15" 213071 1393171
"07:25" 166875 2550219
"07:35" 129754 3203973
"07:45" 206582 1391753
"07:55" 188755 1291557
"08:05" 41097505 2104403
"08:15" 161010 1097136
SW1 PORT1 COUNTER
TIME ifOutOctets ifInOctets
"04:54" 360530 691201
"05:04" 916135 42508351
"05:14" 220454 650716
"05:24" 202897 633590
"05:34" 249832 646544
"05:44" 352674 702434
"05:54" 343335 766666
"06:04" 878354 42599583
"06:14" 1100058 1256478
"06:24" 547242 659272
"06:34" 624214 501844
"06:44" 441215 672352
"06:54" 463232 875108
"07:04" 1328003 1014327 <- not incremented
"07:14" 849284 937316
"07:24" 1242209 1072460
"07:34" 1828204 1453718
"07:44" 1134353 967381
"07:54" 767396 742900
"08:04" 1289501 42558883
"08:14" 563577 776296
The same things apply other switchs.Switchs doesn't add to its counter
occasinally. At that time, node A can communicate with node B normally.
I think something is wrong with SW900's counter.
SW900 just doesn't add to its SNMP's counter ?
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