Enabling QoS MIB

[lamav]

Correct me if Im wrong, but whenever one enables a certain technology or protocol on a Cisco device, the option exists to monitor the behavior through SNMP.

The example I am concerned with in particular is MQC QoS.

I have read in many documents that Cisco has an SNMP MIB for MQC QoS, but how does one go about enabling that MIB so that an NMS station can leverage it to monitor....

I would think that one would have to enable the traps under the "snmp-server" set of congiurations, but no matter what version of code I use to check, there is never an option for enabling MQC QoS traps, even though the technology is configurable on the device.

Example:

3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
3(config)#snmp-server enable traps ?
  alarms            Enable SNMP alarms traps
  atm               Enable SNMP atm traps
  bgp               Enable BGP traps
  bridge            Enable SNMP STP Bridge MIB traps
  bulkstat          Enable Data-Collection-MIB Collection notifications
  c6kxbar           Enable SNMP CISCO-CAT6K-CROSSBAR-MIB traps
  call-home         Enable SNMP CISCO-CALLHOME-MIB traps
  casa              Enable SNMP casa traps
  cef               Enable SNMP CEF traps
  chassis           Enable SNMP chassis traps
  config            Enable SNMP config traps
  config-copy       Enable SNMP config-copy traps
  config-ctid       Enable SNMP config-ctid traps
  cpu               Allow cpu related traps
  csg               Enable SNMP CSG traps
  dhcp              Enable SNMP dhcp traps
  dot1x             Enable SNMP dot1x traps
  ds1               Enable SNMP DS1 traps
  eigrp             Enable SNMP EIGRP traps
  entity            Enable SNMP entity traps
  envmon            Enable SNMP environmental monitor traps
  ether-oam         Enable SNMP ethernet oam traps
  ethernet          Enable SNMP Ethernet traps
  event-manager     Enable SNMP Embedded Event Manager traps
  flash             Enable SNMP FLASH notifications
  flex-links        Enable SNMP FLEX Links traps
  frame-relay       Enable SNMP frame-relay traps
  fru-ctrl          Enable SNMP entity FRU control traps
  hsrp              Enable SNMP HSRP traps
  ipmulticast       Enable SNMP ipmulticast traps
  ipsec             Enable IPsec traps
  isakmp            Enable ISAKMP traps traps
  isis              Enable IS-IS traps
  l2tun             Enable SNMP L2 tunnel protocol traps
  mac-notification  Enable SNMP MAC Notification traps
  memory            Enable SNMP Memory traps
  module            Enable SNMP module traps
  mpls              Enable SNMP MPLS traps
  msdp              Enable SNMP MSDP traps
  mvpn              Enable Multicast Virtual Private Networks traps
  ospf              Enable OSPF traps
  pim               Enable SNMP PIM traps
  port-security     Enable SNMP port security traps
  pppoe             Enable SNMP pppoe traps
  pw                Enable SNMP PW traps
  rep               Enable SNMP Resilient Ethernet Protocol Traps
  resource-policy   Enable CISCO-ERM-MIB notifications
  rf                Enable all SNMP traps defined in CISCO-RF-MIB
  rsvp              Enable RSVP flow change traps
  rtr               Enable SNMP Response Time Reporter traps
  slb               Enable SNMP SLB traps
  snmp              Enable SNMP traps
  sonet             Enable SNMP SONET traps
  stpx              Enable SNMP STPX MIB traps
  syslog            Enable SNMP syslog traps
  transceiver       Enable SNMP transceiver traps
  tty               Enable TCP connection traps
  vlan-mac-limit    Enable SNMP L2 Control VLAN MAC Limit notifications
  vlancreate        Enable SNMP VLAN created traps
  vlandelete        Enable SNMP VLAN deleted traps
  vtp               Enable SNMP VTP traps
  <cr>

3(config)#snmp-server enable traps

Thanks

[Giuseppe Larosa]

Hello Victor,

it is just enough to check if the IOS image supports the required MIB and to load the required MIB(s) on the NMS server that is called compiling the MIB.

the second to allow the NMS to perform the appropriate SNMP gets.

we can use the SNMP MIB  navigator tool

http://tools.cisco.com/Support/SNMP/do/BrowseOID.do?local=en

view and download MIBs

searching mibs containing QoS in the name

CISCO-CLASS-BASED-QOS-MIB

select View MIB dependencies and download MIB

you see an ordered list of MIBs that need to be in the NMS system

I think that to build an event based approach you should use EEM and to build the expressions equivalent to the tresholds on the QoS mib variables.

For a polling approach all is needed is to compile the MIBs. I tested this some years ago.

So it depends from what you want to achieve, but not all MIB variables have a voice in the snmp traps commands because traps are a different approach where it is the device that sends a message to NMS when something  happens (also in RMON it is so)

Hope to help

Giuseppe

[lamav]

OK, I have seen the link to download the MIB and I have downloaded it. Its a text file that opens with Notepad...

What do you do with that file? Download the MIB and install it? Where?

[Giuseppe Larosa]

Hello Victor,

the MIB file has to be "installed" (actually the term is compiled) on an SNMP MIB browser that can be a standalone program or a tool part of NMS software.

an example of MIB browser software is:

http://www.ndt-inc.com/SNMP/MIBrowser.html

I used older versions of the following that is a professional product

http://www.snmp.co.uk/snmpc/snmpcent.htm

there are some free SWs.

Recently I tried hillsoft mib browser

http://www.softpedia.com/get/Network-Tools/Network-Monitoring/HiliSoft-MIB-Browser-Free-Edition.shtml

Hope to help

Giuseppe