Cisco Cisco IOS Software Release 12.4(4)T

NAT

Network Address Translation is used by a device 
(firewall, router or computer) that sits between an 
internal network and the rest of the world.

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NetFlow

The Cisco IOS NetFlow feature tracks the IP 
traffic that is routed by your Cisco device by using 
a built-in cache. Tracked information can be 
retrieved and viewed on-screen using “show” 
commands, or exported and printed in reports, 
which enables you to analyze the IP traffic data 
for a specific time period. Using the NetFlow 
feature, you can review traffic, trend, billing, and 
other traffic-related data.

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QoS

Quality of Service

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Routing Protocols OSPF: Open Shortest Path First (OSPF) is a 

routing protocol developed for Internet Protocol 
(IP) networks by the interior gateway protocol 
(IGP) working group of the Internet Engineering 
Task Force (IETF).

RIP: Routing Information Protocol (RIP) is a 
distance-vector protocol that uses hop count as its 
metric.

EIGRP: Enhanced Interior Gateway Routing 
Protocol

BGP: Border Gateway Protocol

STP: Spanning tree algorithms provide path 
redundancy by defining a tree that spans all of the 
switches in an extended network and then force 
certain redundant data paths into a standby 
(blocked) state.

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SSH

SSHv2 client and server support

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SLB

Server load balancing

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SNMP

The Simple Network Management Protocol 
(SNMP) is an application layer protocol that 
facilitates the exchange of management 
information between network devices. It is part of 
the Transmission Control Protocol/Internet 
Protocol (TCP/IP) protocol suite. SNMP enables 
network administrators to manage network 
performance, find and solve network problems, 
and plan for network growth.

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SPAN

Switch Port Analyzer

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Syslog

Configuration and delivery of SYSLOG messages

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Telnet

Legacy unencrypted protocol for administration

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