Smarts NCM: Support for pull of Startup config using SNMP/TFTP for CiscoIOSSwitch

Products

• VMware Smart Assurance

Issue/Introduction

Symptoms:


Pull of running config will be successful via SNMP/TFTP but startup fails since the mechanism is not supported even in DSR 23 HF1

Below error is observed in $VOYENCE_HOME/logs/commmgr.log proving the unsupported/invalid mechanism used:

Line 60183: Nov 16 10:22:09 -1501505216/pull(15460446)#4: RESULT: Pulling configuration file 'running' for IDX xxxxx with mechanism SNMP/TFTP and SNMPV2
Following error can be observed if services are not restarted.
Line 60131: Nov 16 10:22:09 -1501505216/pull(15460446)#4: RESULT: Pulling configuration file 'startup' for IDX xxxxx with mechanism Unspecified and SNMPV2
Line 60132: Nov 16 10:22:09 -1501505216/pull(15460446)#4: RESULT: The selected mechanism does not support pull.
Line 60133: Nov 16 10:22:09 -1501505216/pull(15460446)#3: ERROR: Invalid Mechanism Unspecified

Environment

VMware Smart Assurance - NCM

Cause

As the logic for fetching config from NCM, below are mechanism available/coded:
<Mechanisms>
        <Mechanism id="1" snmp-required="true">SNMP/TFTP</Mechanism>
        <Mechanism id="2" snmp-required="false">TELNET</Mechanism>
        <Mechanism id="3" snmp-required="false">SSH</Mechanism>
        <Mechanism id="6" snmp-required="false" default="true">TELNET/TFTP</Mechanism>
        <Mechanism id="8" snmp-required="false">SSH/TFTP</Mechanism>
        <Mechanism id="9" snmp-required="false">SSH/SCP</Mechanism>
    </Mechanisms>

For running :
            <PullMechanisms>
                <PullMechanism>1</PullMechanism>
                <PullMechanism>2</PullMechanism>
                <PullMechanism>3</PullMechanism>
                <PullMechanism default="true">6</PullMechanism>
                <PullMechanism>8</PullMechanism>
                <PullMechanism>9</PullMechanism> 

and for startup:
           <PullMechanisms>
                <PullMechanism>2</PullMechanism>
                <PullMechanism>3</PullMechanism>
                <PullMechanism default="true">6</PullMechanism>
                <PullMechanism>8</PullMechanism>
                <PullMechanism>9</PullMechanism>

The cause of fail is mechanism SNMP/TFTP(1) is not supported/hardwired in coding.

Resolution

To resolve this issue open CiscoIOSSwtich.pkg file under $VOYENCE_HOME/custompackage/pkgxml/CiscoIOSSwitch. If CiscoIOSSwtich.pkg doesn't exist in the $VOYENCE_HOME/custompackage/pkgxml/CiscoIOSSwitch directory, please copy CiscoIOSSwtich.pkg to the $VOYENCE_HOME/package/pkgxml/CiscoIOSSwitch directory.
Then locate the Startup and add <PullMechanism>1</PullMechanism> (as shown below)

Startup:
           <PullMechanisms>
                <PullMechanism>1</PullMechanism>   <<----Added----
                <PullMechanism>2</PullMechanism>
                <PullMechanism>3</PullMechanism>
                <PullMechanism default="true">6</PullMechanism>
                <PullMechanism>8</PullMechanism>
                <PullMechanism>9</PullMechanism>


Restart the voyence service.

If the user has a distributed setup, please make changes on both the AS and DS, then complete a voyence service restart on both.