With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
slipInErrs
slip In Errs
1.3.6.1.4.1.11.2.3.9.3.1.4.29
The number of errors encountered on received octets on the serial interface while running SLIP.
Back to hp-700rx MIB page.
IPHost Network monitor allows you to monitor slipInErrs on Hewlett Packard device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.