Chapter 1: Introduction1-6 6E122-26, 6E132-25, 6E123-26 and 6E133-25 User’s Guide1.3.6 Standards CompatibilityThe 6E12X-26 and 6E13X-25 are fully compliant with the IEEE 802.3standard. The optional Fast Ethernet Interface Modules are fullycompliant with the IEEE 802.3u standard. The 6E12X-26 and 6E13X-25provide IEEE 802.1D Spanning Tree Algorithm (STA) support to enhancethe overall reliability of the network and protect against “loop”conditions. The 6E12X-26 and 6E13X-25 support a wide variety ofindustry standard MIBs including RFC 1213 (MIB II), RFC 1757(RMON), RFC 1493 (Bridge MIB) and RFC 1354 (FIB MIB). A full suiteof Cabletron Systems Enterprise MIBs provide a wide array of statisticalinformation to enhance troubleshooting.1.3.7 LANVIEW Diagnostic LEDsLANVIEW diagnostic LEDs serve as an important troubleshooting aid byproviding an easy way to observe the status of individual ports and overallnetwork operations. Chapter 4 provides details about the 6E12X-26 and6E13X-25 LANVIEW LEDs.1.3.8 Year 2000 CompliantThe 6E12X-26 and 6E13X-25 have an internal clock that can maintain thecurrent time and date beyond the year 1999.1.3.9 Runtime IP Address DiscoveryThis feature enables the modules to automatically accept an IP addressfrom a BootP server on the network into NVRAM without requiring auser to enter an IP address through Local Management.When the modules are connected to the network and powered up,Runtime IP Address Discovery (RAD) checks the modules for an IPaddress. If one has not yet been assigned (module and 6C105 chassis IPaddress set to 0.0.0.0), RAD checks to see if any of the module interfaceshave a link. If so, RAD sends out Reverse Address Resolution Protocol(RARP) and BootP requests to obtain an IP address from a RARP orBootP server on the network.The RAD requests start out at an interval of one second. The interval thendoubles after every transmission until an interval of 300 seconds isreached. At this point, the interval remains at 300 seconds. The RADrequests continue until an IP address is received from a RARP or BootPserver, or an IP address is entered using Local Management.
