5-1CHAPTER 5PPP MIBThe ELS10-26 supports RFC 1471 for PPP link control and RFC1473 for PPP IP support.The MIB tree for reaching the PPP group is:1.3.6.1.2.1.10ppp {transmission 23}5.1 PPP LINK CONTROL TABLEpppLCP {ppp 1}pppLinkStatusTable {pppLink1}Not-AccessibleA table containing PPP-Link specific variables for this PPPimplementation.pppLinkStatusEntry {pppLinkStatusTable 1}Not-AccessibleManagement information about a particular PPP Link.pppLinkStatusPhysicalIndex {pppLinkStatusEntry 1}Integer Read-onlyThe value of ifIndex that identifies the lower-level interface overwhich this PPP Link is operating. This interface would usually bean HDLC or RS-232 type of interface. If there is no lower layerinterface element, or there is no ifEntry for the element, or theelement can not be identified, then the value of this object is 0. Forexample, suppose that PPP is operating over a serial port. Thiswould use two entries in the ifTable. The PPP could be runningover ‘interface’ number 123 and the serial port could be runningover ‘interface’ number 987. Therefore, ifSpecific.123 wouldcontain the OBJECT IDENTIFIER ppppppLinkStatusPhysicalIndex.123 would contain 987, and