Hi  ,

I am getting "snmpwalk: security service 3 error parsing ScopedPDU "  and 
"Timeout: No Response from localhost" while doing snmpwalk on bgpI

SNMPv2 walk
-------------------
 snmpwalk -v2c -c public localhost 1.3.6.1.2.1.15.4
registered debug token recv, 1
recv: error while parsing VarBindList:
recv: Error: Generic error
recv: error while parsing VarBindList:
recv: Error: Generic error
recv: error while parsing VarBindList:
recv: Error: Generic error


SNMPv3 walk
---------------------
registered debug token recv, 1
recv: error while parsing VarBindList:
security service 3 error parsing ScopedPDU
recv: error while parsing VarBindList:
security service 3 error parsing ScopedPDU
recv: error while parsing VarBindList:
security service 3 error parsing ScopedPDU
recv: error while parsing VarBindList:
security service 3 error parsing ScopedPDU
recv: error while parsing VarBindList:
security service 3 error parsing ScopedPDU

Captured PCAP files between 5.7.2 client <---> 5.8 server  and 5.8 client 
<--->s5.8 server

My observations on the PCAP file.

server is 5.8 ---client 5.7.2
------------------------------------

the client is sending snmpwalk request  for bgpIdentifier
the server is responding to the client as below.


                        variable-bindings: 1 item
                            RFC1213-MIB::mib-2.15.3.1.1.4.0.0.41.218 
(1.3.6.1.2.1.15.3.1.1.4.0.0.41.218): <MISSING>
                                Object Name: 1.3.6.1.2.1.15.3.1.1.4.0.0.41.218 
(RFC1213-MIB::mib-2.15.3.1.1.4.0.0.41.218)
                                Value (IpAddress): <MISSING>


client is returning the o/p as 0.0.0.0 for bgp identifier.

case 2:
----------
 server is 5.8 or 5.9  ---- client 5.8 or 5.9

the client is sending snmpwalk request  for bgpIdentifier OID
the server is responding to the client as below.


                           variable-bindings: 1 item
                            RFC1213-MIB::mib-2.15.3.1.1.4.0.0.41.218 
(1.3.6.1.2.1.15.3.1.1.4.0.0.41.218): <MISSING>
                                Object Name: 1.3.6.1.2.1.15.3.1.1.4.0.0.41.218 
(RFC1213-MIB::mib-2.15.3.1.1.4.0.0.41.218)
                                Value (IpAddress): <MISSING>

the client is resending  requests bgpIdentifier

The issue is seeing on net-snmp 5.8 and net-snmp 5.9 SNMP clients.

Are there any behavioral changes between 5.8 and 5.7.2 clientsimplimentation?



Thanks,
Chandra Sekhar.



























Thanks

Chandra Sekhar

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