With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
crcERSpanIFDirection
crc ER Span IF Direction
1.3.6.1.4.1.9.9.103.1.2.6.1.2
This object affects the way traffic is copied from a device's source. If this object has the value 'copyRxOnly(1)', then only traffic received on crcERSpanIFIndex will be copied to the destination. If this object has the value 'copyTxOnly(2)', then only traffic transmitted out the crcERSpanIFIndex will be copied to the destination. If this object has the value 'copyBoth(3)', then all traffic received or transmitted on crcERSpanIFIndex will be copied to the destination. This object is only significant when object crcERSpanSessionType of the corresponding crcERSpanSessionTable, mapped via crcERSpanSessionNo, is eRSpanSource(1). This object may be modified when the row is active.
Back to CISCO-RMON-CONFIG-MIB MIB page.
IPHost Network monitor allows you to monitor crcERSpanIFDirection on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.