Hello,
You can use the sequence of CLI commands below:
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* ePMP command line interface *
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ePMP2000_d20d59>config show | SSID
wirelessInterfaceSSID ePMP-2000
ePMP2000_d20d59>config set wirelessInterfaceSSID Demo-ePMP-2000
ePMP2000_d20d59>config save
ePMP2000_d20d59>config apply
ePMP2000_d20d59>
ePMP2000_d20d59>config show | SSID
wirelessInterfaceSSID Demo-ePMP-2000
ePMP2000_d20d59>
The "config show | SSID" just shows the current SSID. To change the SSID, you need the "config set", "config save" and "config apply" commands.
You can find the ePMP CLI User Guide v3.4.1 here.
Regards