Thank you, seems like the issue is with Cisco which is not able to process the request.
One more quick question, i had cisco .my mib and i converted it to .dic using the below command as per documentation:
smidump --level=1 -k -f python CISCO-MEMORY-POOL-MIB.my > CISCO-MEMORY-POOL-MIB.dic
#########O/P##########
CISCO-MEMORY-POOL-MIB.my:30: failed to locate MIB module `CISCO-QOS-PIB-MIB'
CISCO-MEMORY-POOL-MIB.my:32: failed to locate MIB module `CISCO-SMI'
CISCO-MEMORY-POOL-MIB.my:66: unknown object identifier label `ciscoMgmt'
smidump: module `CISCO-MEMORY-POOL-MIB.my' contains errors, expect flawed output
Can it also be causing the issue?