3Com 3CBLSG48 User Guide - Page 225

214 appendix F: gLOSSARY Protected Extensible Authentication Protocol (PEAP) A protocol proposed by Microsoft, Cisco and RSA Security for securely transporting authentication data, including passwords, over 802.11 wireless networks. Like the competing standard Tunneled Transport Layer Security (TTLS), PEAP makes it possible to authenticate wireless LAN clients without requiring them to have certificates, simplifying the architecture of secure wireless LANs.Protocol-Independent Multicasting (PIM) This multicast routing protocol floods multicast traffic downstream, and calculates the shortest-path back to the multicast source network via reverse path forwarding. PIM uses the router's IP routing table rather than maintaining a separate multicast routing table as with DVMRP. PIM - Sparse Mode is designed for networks where the probability of a multicast client is low, such as on a Wide Area Network. PIM - Dense Mode is designed for networks where the probability of a multicast client is high and frequent flooding of multicast traffic can be justified. Remote RADIUS is a logon authentication protocol that uses software running Authentication on a central server to control access to RADIUS-compliant devices on Dial-in User Service the network. (RADIUS) Remote Monitoring RMON provides comprehensive network monitoring capabilities. It (RMON) eliminates the polling required in standard SNMP, and can set alarms on a variety of traffic conditions, including specific error types. Rapid Spanning Tree RSTP reduces the convergence time for network topology changes to Protocol (RSTP) about 10% of that required by the older IEEE 802.1D STP standard. Secure Shell (SSH) A secure replacement for remote access functions, including Telnet. SSH can authenticate users with a cryptographic key, and encrypt data connections between management clients and the switch. Routing Information The RIP protocol seeks to find the shortest route to another device by Protocol (RIP) minimizing the distance-vector, or hop count, which serves as a rough estimate of transmission cost. RIP-2 is a compatible upgrade to RIP. It adds useful capabilities for subnet routing, authentication, and multicast transmissions. Simple Network The application protocol in the Internet suite of protocols which offers Management network management services. Protocol (SNMP)