CER 2.0

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May 29th, 2008
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Folks,

I just installed CER 2.0


Do we need to have an specific IOS version on the switches in order for CER to be able to poll the devices through SNMP ?

I can only associate 26 phones out of 462 to the proper switch port. the 26 phones are plugged to the same switch. If I check the application log it says


Failed to retrieve SysOid of a device 172.16.1.10 Please check if device is SNMP reachable. However all of the devices are SNMP reachable


C:\Program Files\OPENXTRA\NET-SNMP\usr\bin>snmpwalk -v2c -cCC_CALC 172.16.1.10 SysObjectID SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.9.1.614



This device is running IOS 12.2(25)SEE2


And the only switch that worked is running IOS 12.2(35)SE5


Please let me know


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Chris Deren Thu, 05/29/2008 - 11:22
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Yes a supportde IOS needs to be installed, you should be able to look it up in the relseas notes of CER.

Your version should be supported, unless you are running into some kind of a bug.

Does show CDP neighbors display the phones correctly on the switch?

Do you have these switches defined in CER with the correct subenet range and SNMP string?


Chris


cris_jimenez Thu, 05/29/2008 - 11:55
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I went to Phone Tracking>Lan Switches

and defined every switch there.


I went to Phone Tracking > SNMP Settings and defined the SNMP string as well as the Subnet range.

these are the outputs if I try to poll the cdpcacheentry through SNMP from my workstation this is the output I get


SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10102.73 = STRING: "SEP0004f2e0bd80"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10103.79 = STRING: "SEP000CCE35220A"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10105.15 = STRING: "SEP0019306F74A8"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10106.13 = STRING: "SEP0019306F6AD9"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10107.77 = STRING: "SEP000CCE62AF84"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10108.14 = STRING: "SEP0019306F7F12"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10109.10 = STRING: "SEP0019E7EE9612"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10110.12 = STRING: "SEP0019306F2B35"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10111.76 = STRING: "SEP000CCE3A7976"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10114.11 = STRING: "SEP0019306F7FA8"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10115.74 = STRING: "SEP0019305DB636"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10116.78 = STRING: "SEP0019305DB410"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10117.82 = STRING: "SEP0019305E12AB"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10119.80 = STRING: "SEP000C858D230C"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10121.83 = STRING: "SEP0019305DB3DE"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.6.10122.81 = STRING: "SEP0019305DB3D6"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.7.10125.61 = STRING: "GigabitEthernet4/2"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10102.73 = STRING: "Cisco IP Conference Station 7936"

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10103.79 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10105.15 = STRING: "Cisco IP Phone 7911

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10106.13 = STRING: "Cisco IP Phone 7911

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10107.77 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10108.14 = STRING: "Cisco IP Phone 7911

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10109.10 = STRING: "Cisco IP Phone 7911

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10110.12 = STRING: "Cisco IP Phone 7911

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10111.76 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10114.11 = STRING: "Cisco IP Phone 7911

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10115.74 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10116.78 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10117.82 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10119.80 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10121.83 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10122.81 = STRING: "Cisco IP Phone 7940

SNMPv2-SMI::enterprises.9.9.23.1.2.1.1.8.10125.61 = STRING: "cisco WS-C4510R"



I check the Release notes for CER 2.0.3

this is the OID of the swtich 1.2.6.1.4.1.9.1.614 and on the release notes says that the minimum IOS is Cisco IOS 12.2(20)SE or higher


C:\Program Files\OPENXTRA\NET-SNMP\usr\bin>snmpwalk -v2c -cCC_CALCO#1_COMM 172.1

6.1.10 SysDescr

SNMPv2-MIB::sysDescr.0 = STRING: Cisco IOS Software, C3560 Software (C3560-IPSER

VICES-M), Version 12.2(25)SEE2, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2006 by Cisco Systems, Inc.

Compiled Fri 28-Jul-06 07:19 by yenanh


please let me know, because is failing on 99% of my switches

Tommer Catlin Thu, 05/29/2008 - 13:47
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I think you are polling your switches, the problem is that you defined your subnets that included your phones. So CER is going out and requesting and SNMP read from every single phone in the defined subnet.


Only define your switches and the string per switch and see if that works.


Also, your phones maybe queried on the switches, but you do not have a connection to callmanager working. CER probably is not downloading the phone information from the AXL database (if using CUCM 6.x, etc)


CER will link the "phones" database from CUCM and the "SNMP" queries from the switches and present them into the CER GUI for searching.



cris_jimenez Thu, 05/29/2008 - 14:21
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I haven't defined any subnets yet.

I went to Phone Tracking>Lan Switches

and defined every switch there.


I went to Phone Tracking > SNMP Settings and defined the SNMP string as well as the IP address of every Switch.


CER is talking to CCM (4.1(3)) because the CTI ports are registered with CER on callmanager and if I go to Phone Tracking>Cisco Unified Communications Manager, select the publisher and then click on Cisco Unified Callmanager List, the 2 servers in my cluster shows up.


The Event viewer has the same error. Do you think we need to upgrade the IOS ?

Tommer Catlin Thu, 05/29/2008 - 14:24
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If you go to phone tracking, can you see the phones from CUCM?

cris_jimenez Thu, 05/29/2008 - 14:26
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Pretty much all of the phones shows up as Unalocated Phones.


Tommer Catlin Thu, 05/29/2008 - 16:42
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Ok, so it is then the SNMP to your switch.


Try setting your read only PW to something simple and see it works. Possibly there is some thing wrong with RO password on the switch and CER can not read.


If it still does not work, either a bug or IOS upgrade is in order.

cris_jimenez Fri, 05/30/2008 - 07:52
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You know what, something weird happen, I change the snmp community string on CER, and without even changing the string on the switches I was able to discover like 5 of them

I don't know what's going on

I am going to change the community string and that might solve my issue

thank you

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