We are monitoring several Routers and Switches with the SNMPcollector probe and on some of the discovered devices we are seeing different issues:
The Vendor Certification is returning the information missing.
The Devices we are discovering are supported.
During the Device discovery the probe is not able to capture the Interface information:
The snnmpcollector.log might show:
[..]
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifAdminStatus
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifType
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifSpeed
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifMtu
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifPhysAddress
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifOperStatus
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifDescr
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifAdminStatus
Sep 24 13:16:32:128 [DiscoveryController23, snmpcollector] Could not find a value for variable ifType
[..]
To resolve this issue
1. Open the SNMPcollector raw configure and change the following key:
MAX_BATCH = 2
(if the key MAX_BATCH is not present, please add the key in the setup section)
2. For the profiles where this issue is seen, increase the timeout:
SNMP timeout in Milliseconds = 30000
3. Force component rediscover:
MAX_BATCH:
By default, the snmpcollector gets the information from devices using an SNMP bulk request, including up to a maximum of 20 OIDs, (the default number when the MAX_BATCH key is not present).
Some SNMP devices will not accept a SNMP GetBulk of this size.
So, default value is MAX_BATCH is 20. Setting it to 2 will reduce the size of the batch.
Profile Timeout:
Unless you are seeing any other issue after changing these settings you can safely keep the Max Batch = 2 and timeout set to 30000ms (30 seconds)
These values can be tuned for better performance and results.