IF MIB RFC 2863 DRAFT STANDARD REPLACES IF

IF MIB RFC 2863 DRAFT STANDARD REPLACES IF GROUP OF MIB-II • RFC 1213 • RFC 1229 (EXTENSIONS TO THE IF GROUP) DEFINES THE FOLLOWING MAIN TABLES: • if. Stack. Table • if. XTable SEE ALSO: INVERTED STACK TABLE RFC 2864 DRAFT STANDARD Copyright © 2001 by Aiko Pras These sheets may be used for educational purposes

IF GROUP OF MIB-II • PROVIDES DETAILED INFORMATION OF "GENERALIZED" INTERFACES • CONTAINS POINTERS TO MEDIA SPECIFIC MIBS • INTERFACES CAN BE PHYSICAL OR VIRTUAL • DEFINES 1 COUNTER AND 1 TABLE

if. Index if. Descr if. Type if. Mtu if. Speed if. Phys. Address if. Admin. Status if. Operstatus if. Last. Change if. In. Octets if. In. Ucast. Pkts if. In. NUcast. Pkts if. In. Discards if. In. Errors if. In. Unknown. Protos if. Out. Octets if. Out. Ucast. Pkts if. Out. NUcast. Pkts if. Out. Discards if. Out. Errors if. Out. QLen if. Specific if. Table OF MIB-II 1 2 n

if. Type and if. Status • if. Type EXAMPLES: • if. Admin. Status / if. Oper. Status 1 = up 2 = down 3 = testing

IF PACKET COUNT

PROBLEMS WITH if. Table OF MIB-I LAYERED INTERFACES DIFFICULT TO DESCRIBE • WHAT SHOULD BE THE VALUE OF if. Type? NO DISTINCTION BETWEEN VIRTUAL & PHYSICAL INTERFACES NO SUPPORT FOR DYNAMIC ADDITION/REMOVAL OF INTERFACES COUNTERS ARE 32 BITS (SMIv 1) • WRAP AROUND 10 MBIT ETHERNET: 57 MINUTES • WRAP AROUND 1 GBIT ETHERNET: LESS THAN 1 MINUTE! GAUGES ARE 32 BITS • if. Speed INTERFACE TYPES "HARD CODED" IN STANDARD NO DIFFERENCE BETWEEN MULTICAST & BROADCAST TOO MANY TRAPS

INTERFACE STACKS LAYERING OF INTERFACES NOW DEFINED BY if. Stack. Table

CHANGES / ADDITIONS TO THE if. Table NEW interface. Index TEXTUAL CONVENTION • INTERFACE NUMBERING NEED NOT BE CONSEQUETIVE NEW IANAif. Type • INTERFACE TYPES CAN BE DEFINED EXTERNALLY HIGH CAPACITY COUNTERS NEW if. High. Speed OBJECT • IN 1. 000 BITS/S SEVERAL OTHER NEW OBJECTS • if. Name • if. Alias • if. Link. Up. Down. Trap. Enable • if. Connector. Present • if. Promiscuous. Mode • if. Counter. Discontinuity. Time

if. XTable: HIGH CAPACITY COUNTERS

OTHER ADDITIONS RECEIVE ADDRESS TABLE • DEFINES THE ADDRESSES FOR WHICH EACH INTERFACE WILL RECEIVE PACKETS / FRAMES link. Up / link. Down NOTIFICATION TYPES COMPLIANCE GROUPS