What are the disadvantages of SNMP as a configuration manage

What are the disadvantages of SNMP as a configuration management protocol? There are two management stations-one SNMP based and the other CORBA based The SNMP-based manager does poll-based fault management of a device by sending SNMP requests every 2 minutes. The CORBA-based NMS fault management is fully push based and the NMS receives a notification when there is a fault The size of the SNMP request and response PDUs is 150 bytes; and the size of a CORBA notification is about 400 bytes During 1 hour there are 20 alarms Calculate the bandwidth used in both cases. Consider a CORBA-based modeling of the interface table that uses two approaches-a single method that returns all the interfaces similar to a SNMPGetBulk and separate methods for each interface similar to SNMPGet (a one-one mapping from SMI to IDLs). Which of the approaches is more suitable? Explain why it is more suitable In a Management system at a Service Provider, it is required to query a device for SysUptime, tcpActiveOpens, tcpPassiveOpens, and tcpAttempts. A designer Anil wants to use SNMP for this while Bina wants to use CORBA(1 method call for SysUptime, 1 for the remaining 3 parameters) Which of their approaches uses less bandwidth? Why? This NMS also has to retrieve the ipRouteTable, which has about 10,000 rows. Anil suggests SNMPv2 GetBulk command, while Bina prefers CORBA (1 method to fetch the table) Whose approach results in less bandwidth being used? Why? Suppose a router has 80 interfaces and performance data are to be collected from the interface table. Calculate the average bandwidth used to retrieve 80 rows using SNMPGet, SNMPGetBulk, with and without compression. Also calculate the bandwidth used if Web services are used with and without compression. Use the following data to calculate bandwidth usage: Average size of SNMPGet (request + response) PDU is around 40 bytes and when objects are relieved using SNMPBulkGet, the average size per object is 20 bytes. Assume that compression with SNMP results in 25% decrease in bandwidth consumption. For Web services, every message has a header of size 500 bytes and in the SOAP message each row in the interface table occupies around 1,000 bytes. Compression results in 75% bandwidth reduction when 80 rows are retrieved.

Solution

1.The disadvantages of SNMP are

a)Security is expensive

b)more to configure and administer

1)unlocked doors are more convinient to use

2)Community strings were more relatively easy to administer

3)Off-the-shelf tools help

c)More overhead

1)Message headers longer and more complex

2)Cryptographic calculations can increase CPU load approximately 20-ish percent

3)It will run slower,it will run much slower if software based DES is used,especially if implemented in Java

d)Some machines dont have hardware assets