[mrtg] SNMP OID's for Redback equipment (IN MESG)

[Brantley Jones]

I know that a lot of you (including me) have had trouble getting stats from 
Redback boxes with MRTG.  This is due to the default SNMP support on a 
Redback, which is weak (at least at first look anyway).  I'm including a 
.txt file that tells you how to include this information.  It requires a 
little extra configuration on the Redback, but once you get these commands 
in place, our SMS 500 responds with just as much information as most of our 
other devices...

We're doing an SNMPwalk on interfaces.ifTable.ifEntry.ifType and doing a 
'grep -c ppp'.  This will show us the number of ppoe subs online, which is 
what we're looking for.

If somebody has any other OID's, such as CPU, etc., please let us/me know.

Brantley

Here's the contents:

Configuring SMS for read and write access via SNMP.
Configure SNMP:

[local]RedBack(config)snmp server
[local]RedBack(config)snmp community SecretHandshake

By default this only allows the viewing of Objects under the System Group
(iso.org.dod.internet.mgmt.mib-2.system). To view all of the mib objects
supported by the SMS SNMP agent a new view needs to be created that 
encompasses
the internet branch (iso.org.dod.internet). An example configuration follows:

[local]RedBack(config)snmp server
[local]RedBack(config)snmp view InternetView internet included
[local]RedBack(config)snmp community SecretRead view InternetView
[local]RedBack(config)snmp community SecretReadWrite view Internetview 
read-write

Using community name SecretRead will allow read access to the MIB Objects 
under
the internet branch, to perform write operations on MIB Objects the community
name SecretReadWrite must be used. All of the above commands are entered in
global configuration mode.

Obtaining traffic statistics from an I/O Port on the SMS:
Let's suppose with the following hardware configuration you wanted to poll 
for ifOutOctets
(interfaces.ifTable.ifEntry.ifOutOctets) for port atm 4/0.

ENET (3/0) 2  0.1  0.1  0.1  0.1 0000 05021049811251   600-0106-01      100TX
ATOC3(4/0) 2  0.1  0.1  0.1  0.3 0000 03031069921187   600-0110-01      SM

1. Ensure that IF-MIB defined by RFC 2233 is compiled into your Network 
Management
Application.
2. Query ifName: 1.3.6.1.2.1.31.1.1.1.1 OR
...mgmt.mib-2.ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName

Sample Response:
...
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.2 = port ethernet 3/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.3 = port atm 4/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.4 = port atm 4/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.5 = port atm 4/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.6 = port atm 4/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.7 = port atm 4/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.8 = port atm 4/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.9 = port atm 4/0
  ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.10 = port atm 4/0
..

There are multiple entries for ATM Port 4/0 because it's a multilayered 
interface
and the SMS provides different stats depending on the layer that is of 
interest.
To find the corresponding layer ifDescr needs to be queried ie:
..
interfaces.ifTable.ifEntry.ifDescr.3 = "slot=(3/0), id_version= ...
interfaces.ifTable.ifEntry.ifDescr.4 = "SONET/SDH Path"
interfaces.ifTable.ifEntry.ifDescr.5 = "ATM layer interface"
interfaces.ifTable.ifEntry.ifDescr.6 = "AAL5 layer interface"
...

To obtain the ifOutOctets for port ATM 4/0 at the AAL5 Layer you need to 
use ifIndex 6
snmpget 10.10.10.1 [community name]  interfaces.ifTable.ifEntry.ifOutOctets.6

sysObjId for SMS500:
iso.org.dod.internet.private.enterprise.redBackNetworks.rbnProducts.rbnSMS500
1.3.6.1.4.1.2352.1.2

What OID's do I use to obtain traffic statistics for ATM PVC's?

1: Please ensure that the "RBN-X-AAL5-VCL-STAT-MIB" MIB is compiled into 
your NMS.
2: Please ensure that counters are enabled in the ATM Profile(s) that is 
applied to all
PVC's that are required to be queried.

3: If you are planning to poll PVC's on a regular interval please use the 
BulkStats
feature of the SMS. Bulkstats is a more flexible and less resource 
intensive mechanism
to obtain PVC Statistics.

The following are the OID's for PVC Related Statistics
(obtained from RBN-X-AAL5-VCL-STAT-MIB):

Full OID for querying (snmpwalk) In Packets on all defined PVC's with 
counter enabled:
iso.org.dod.internet.private.enterprises.redBackNetworks.rbnExperiment.rbnXA 
al5clStatMIB.
rbnXAal5VclStatMIBObjects.rbnXAtmAal5VclStatTable.rbnXAtmAal5VVclStatEntry.r 
bnatmAal5VclInPkts
1.3.6.1.4.1.2352.3.1.1.1.1.1

Full OID for querying (snmpwalk) Out Packets on all defined PVC's with 
counters enabled:
iso.org.dod.internet.private.enterprises.redBackNetworks.rbnExperiment.rbnXA 
al5clStatMIB.
rbnXAal5VclStatMIBObjects.rbnXAtmAal5VclStatTable.rbnXAtmAal5VVclStatEntry.r 
bnXAtmAal5VclOutPkts
1.3.6.1.4.1.2352.3.1.1.1.1.2

Full OID for querying (snmpwalk) In Octets on all defined PVC's with 
counters enabled:
iso.org.dod.internet.private.enterprises.redBackNetworks.rbnExperiment.rbnXA 
al5clStatMIB.
rbnXAal5VclStatMIBObjects.rbnXAtmAal5VclStatTable.rbnXAtmAal5VVclStatEntry. 
  rbnXAtmAal5VclInOctets
.3.6.1.4.1.2352.3.1.1.1.1.3

Full OID for querying (snmpwalk) Out Octets on all defined PVC's with 
counters enabled:
iso.org.dod.internet.private.enterprises.redBackNetworks.rbnExperiment.rbnXA 
al5clStatMIB.rbnXAal5VclStatMIBObjects.rbnXAtmAal5VclSta
tTable.rbnXAtmAal5VVclStatEntry.rbnXAtmAal5VclOutOctets
.1.3.6.1.4.1.2352.3.1.1.1.1.4

To obtain the specific stats for a particular PVC, the ifIndex for the AAL5 
Layer on the Port
that the PVC is configured on, and the VPI/VCI needs to appended to the 
OID's defined above.
For example if the SMS Configurations is as follows.

...
  snmp server
  snmp view InternetView internet included
  snmp community publocal view InternetView context local
...
atm profile ubr
  counters
  shaping ubr
port ethernet 0/0
  shutdown
port atm 3/0
  atm pvc 0 32 profile ubr encapsulation ppp over-ethernet
   bind authentication chap
port atm 3/1
  atm pvc 3 32 profile ubr encapsulation ppp over-ethernet
   bind authentication chap
...
  snmp server
  snmp view InternetView internet included
  snmp community public view InternetView context local

To query for the total packets received on atm pvc 3 32 on port 3/1 the OID 
that needs to be
used is:
1.3.6.1.4.1.2352.3.1.1.1.1.1.(ifIndex of AAL5 Layer for Port 3/1).3.32

After determining the ifIndex for the AAL5 Layer on Port 3/1 (which is 7) 
the total packets
received can be obtained as follows.
$ snmpget sms1 public .1.3.6.1.4.1.2352.3.1.1.1.1.1.7.3.32
enterprises.2352.3.1.1.1.1.1.7.3.32 = Counter: 0








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