6
ID Direct Inward Dialing
IDS Intrusion Detection System
IE Information Element
IEEE Institute of Electrical and Electronics Engineers
IETF Internet Engineering Task Force
IGMP Internet Group Management Protocol
IGMP Snooping Internet Group Management Protocol Snooping
IGP Interior Gateway Protocol
IKE Internet Key Exchange
ILM Incoming Label Map
ILS Internet Locator Service
IM Instant Messaging
IMA Inverse Multiplexing for ATM
IMSI International Mobile Subscriber Identification Number
InARP Inverse Address Resolution Protocol
IntServ Integrated Service
IPC Inter-process Communication
IPHC IP Header Compression
IPng IP Next Generation
IPS Intrusion Prevention System
IPsec IP Security
IPTA IP Terminal Access
IPv6 Internet Protocol Version 6
IPX Internetwork Packet Exchange
IRDP ICMP Router Discovery Protocol
IRF Intelligent Resilient Framework
ISAKMP Internet Security Association and Key Management Protocol
ISATAP Intra-Site Automatic Tunnel Addressing Protocol
ISDN Integrated Services Digital Network
I-SID Backbone Service Instance Identifier
IS-IS Intermediate System-to-Intermediate System
ISP Internet Service Provider
ISPF Incremental Shortest Path First
ISSU In-Service Software Upgrade
IST Internal Spanning Tree
ITSP Internet Telephone Service Provider
IVR Interactive Voice Response
L
Return
L2F Layer 2 Forwarding
L2TP Layer 2 Tunneling Protocol
LAC L2TP Access Concentrator
LACP Link Aggregation Control Protocol
LACPDU Link Aggregation Control Protocol Data Unit
LAN Local Area Network
LB Load Balance