Hi Dojo,
We need your guidance regarding the SNMP Maximum Message Size (MMS) configuration used on our E6000 CMTS for SNMP v3 informs sent to DataMiner.
Currently, the SNMP server host configuration on the CMTS is set with the default MMS value of 484, as shown below:
configure snmp-server host 10.176.226.xx name "10.176.226.xx:162:0" udp-port 162 informs version v3 \
taglist "InformV3SNMPv3NotifyTagList" tparam "10.176.226.xx:162:0" timeout 300 retry 20 \
notify-filter "InformV3SNMPv3NotifyProfile" mms 484
We are considering increasing the MMS value to 3000 on the CMTS and would like to confirm if there are DataMiner limitations or known constraints related to receiving SNMP v3 informs with an MMS value of approximately 3000 bytes?
Hi Arun,
According to SNMPv3 responses now have a dynamic size [ID 37948], the size of SNMPv3 responses is not limited. The maximum constraint will be the maximum size of a UDP packet (65K bytes). Based on this, increasing the message size to 3K bytes should not be a problem. As usual, it is recommended first to perform this update on a single CMTS to confirm that there are no issues.
Hope it helps.