09-10-2009 03:35 AM - edited 03-06-2019 07:40 AM
HI,
In our network we have ont CAT 6513 as the core switch and from the core switch uplinks connected two access switches CAT 3500 A and B
Switch CAT 3500 A with the vlan 5
Switch CAT 3500 B with the vlan 6
and we interconnected between the two CAT 3500 with the uplink
servers with the two NIC cards will be connected on the Switch CAT 3500 A and Switch CAT 3500 B and we will do teaming the Both server NIC card so redunacncy will be there
and reason also our internal VLAN traffic will be within the CAT 3500 not go through the core switch
Obousily STP is enabled and blocked one port
everything working fine but,
now later 6 months we have got issue that servers connected to the both the switches CAT 3500 are getting packet loss
and we try to login to the switches its hanged and not through console port also
might be i thought both the switches are gone to High cpu utlization
can u suggest us is there any issue with the network design and why its happened for both switches
any broadcast stroam
thanks
09-10-2009 03:35 AM
Hi,
as far as i know, you cannot do cross switch teaming on these standalone switches. Check the server if it is set to active/active in teaming configuration then you do have network loop/ spanning tree issue.
try changing to your server team as active/standby and that may help.
You may need to disconnect one of the teamed nic from the switch as your switches are seeing same mac address on 2 different switches.
For teaming to work as active/active, You have to use Chassis and plug each server nic into different blade slots, or you can use 3750 switches if they are stacked.
Hope this helps....
Shaheen
09-11-2009 07:00 AM
HI,
As i seen in my both the switches it peaks up to 100% CPU utlization on the both switches
I have attached the
sh version - might be an IOS issue if that case can anyone suggest us the IOS code to fix up the issue
sh process CPU - were i found the below are some using the CPU utlization and what service is this?
35 14969376 11182157 1338 0.39% 0.39% 0.39% 0 Vegas Statistics
40 3048 47528503 0 0.00% 0.00% 0.00% 0 VegasPM
41 252 1871203 0 0.00% 0.00% 0.00% 0 VUR_MGR bg proce
sh proc cpu history - which shows it increase the high cpu utilization when ever the traffic increase and getting packet loss
Cisco IOS Software, C3550 Software (C3550-IPBASE-M), Version 12.2(25)SED, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Sat 22-Oct-05 09:27 by yenanh
Image text-base: 0x00003000, data-base: 0x00A02660
System image file is "flash:c3550-ipbase-mz.122-25.SED/c3550-ipbase-mz.122-25.SED.bin"
18 7864 2651625 2 0.00% 0.00% 0.00% 0 Net Background
19 140 124864 1 0.00% 0.00% 0.00% 0 Logger
20 2812 3742200 0 0.00% 0.00% 0.00% 0 TTY Background
21 7336 3742214 1 0.00% 0.00% 0.00% 0 Per-Second Jobs
26 2188 3727386 0 0.00% 0.00% 0.00% 0 Vegas Storm Cont
27 39616 93549578 0 0.00% 0.00% 0.00% 0 Vegas LED Proces
28 0 1 0 0.00% 0.00% 0.00% 0 SCQ_PROCESS
29 6996 14909292 0 0.00% 0.00% 0.00% 0 RAM Access
30 50056 85250973 0 0.00% 0.00% 0.00% 0 SW Frame Ager
31 80 69 1159 0.00% 0.00% 0.00% 0 VLAN Info Update
32 0 1 0 0.00% 0.00% 0.00% 0 JADE Gbit lockup
33 828 7484340 0 0.00% 0.00% 0.00% 0 L2TM Process
34 2868 7484342 0 0.00% 0.00% 0.00% 0 L3TM
35 14969376 11182157 1338 0.39% 0.39% 0.39% 0 Vegas Statistics
36 64656 51973817 1 0.00% 0.00% 0.00% 0 HMATM Learn proc
37 636 3742206 0 0.00% 0.00% 0.00% 0 HMATM Age proces
38 56 106 528 0.00% 0.00% 0.00% 0 VL2MM
39 0 1 0 0.00% 0.00% 0.00% 0 Vegas Bridging
40 3048 47528503 0 0.00% 0.00% 0.00% 0 VegasPM
41 252 1871203 0 0.00% 0.00% 0.00% 0 VUR_MGR bg proce
42 0 2 0 0.00% 0.00% 0.00% 0 EAPoUDP Process
43 0 3 0 0.00% 0.00% 0.00% 0 CEF switching ba
44 5232 3742205 1 0.00% 0.00% 0.00% 0 PI MATM Aging Pr
45 0 2 0 0.00% 0.00% 0.00% 0 DTP Protocol
46 4 62374 0 0.00% 0.00% 0.00% 0 Port-Security
47 28 115 243 0.15% 0.03% 0.00% 0 Exec
50 20 374241 0 0.00% 0.00% 0.00% 0 Ethchnl
51 324 3742407 0 0.00% 0.00% 0.00% 0 UDLD
57 114648 1088242 105 0.00% 0.00% 0.00% 0 CDP Protocol
60 0 2 0 0.00% 0.00% 0.00% 0 AAA Dictionary R
61 24 31189 0 0.00% 0.00% 0.00% 0 DHCP Snooping
62 12 62374 0 0.00% 0.00% 0.00% 0 IP Input
63 0 1 0 0.00% 0.00% 0.00% 0 ICMP event handl
64 1647560 3789568 434 0.00% 0.00% 0.02% 0 Spanning Tree
65 1064 62416 17 0.00% 0.00% 0.00% 0 CEF background p
66 0 1 0
09-11-2009 07:03 AM
HI,
As i seen in my both the switches it peaks up to 100% CPU utlization on the both switches
I have attached the
sh version - might be an IOS issue if that case can anyone suggest us the IOS code to fix up the issue
sh process CPU - were i found the below are some using the CPU utlization and what service is this?
35 14969376 11182157 1338 0.39% 0.39% 0.39% 0 Vegas Statistics
40 3048 47528503 0 0.00% 0.00% 0.00% 0 VegasPM
41 252 1871203 0 0.00% 0.00% 0.00% 0 VUR_MGR bg proce
sh proc cpu history - which shows it increase the high cpu utilization when ever the traffic increase and getting packet loss
sh run -- running config
RACK19-SWA#sh version
Cisco IOS Software, C3550 Software (C3550-IPBASE-M), Version 12.2(25)SED, RELEASE SOFTWARE (fc1)
System image file is "flash:c3550-ipbase-mz.122-25.SED/c3550-ipbase-mz.122-25.SED.bin"
26 2188 3727386 0 0.00% 0.00% 0.00% 0 Vegas Storm Cont
27 39616 93549578 0 0.00% 0.00% 0.00% 0 Vegas LED Proces
35 14969376 11182157 1338 0.39% 0.39% 0.39% 0 Vegas Statistics
36 64656 51973817 1 0.00% 0.00% 0.00% 0 HMATM Learn proc
37 636 3742206 0 0.00% 0.00% 0.00% 0 HMATM Age proces
09-11-2009 07:16 AM
HI,
i forget a add a point that last 2 months back also we found the same issue as like the 3500 with the cisco 3750 switches also that getting imprpoer responce in terms of connectivity
its happening for the switches which is connected to sun solaris server
is there any issue with the sun OS and IOS
09-12-2009 05:06 PM
There are no issues with any clients running any OS when connected to any network appliance. If the you have observed that the switch is undergoing high CPU utilization, you should consider investigating where this issue is coming from. Do you have a loop issue? Have you tried moving the servers somewhere else? Are there any line errors on the switch ports?
The 3500XL's weakness is the lack of auto-negotiation capabilities. So speed/duplex can be a trial-and-error. Have you checked that end?
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