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Cisco IOS Software
Modeled after the Cisco 2500 and 3600, the Cisco 2600
Series supports a full range of Cisco Internetworking
Operating System, (IOS) features. These feature sets
include a wide variety of intranet, multiprotocol, QoS,
andlegacyIBM applicationsin use today. TheCisco2600
Series offers several base protocol feature sets and a
combination of premium feature options including the
Plus, encryption and firewall feature sets.
The available IOS feature sets are:
•IP
• IP/IPX/AppleTalk/DEC
• Remote Access Services
• Enterprise
• Enterprise APPN
• Telco
The Base feature sets support popular protocols and
standards such as network address translation (NAT),
openshortestpath first (OSPF), BorderGateway Protocol
(BGP), Remote Access Dial-In User Service (RADIUS),
IP Multicast, remote monitoring (RMON), and WAN
optimization features (such as Bandwidth on Demand;
Custom, Priority and WFQ, Dial Back-up and RSVP).
Some base feature sets are offered in combination with
premium capabilities found in the Plus, Firewall and
Encryption feature sets. The Plus feature sets contain
additionalvalue-addedfeatures such as,L2TP,L2F,Voice/
Data integration, legacy mainframe protocols, DLSw,
Asynchronous Transfer Mode (ATM), virtual LANs
(VLANs), Netflow, etc. Additional premium security
oriented features include IPSec, and 3DES encryption
as well as ICSA certified Firewall capabilities.
The CiscoIOS
®
Telco feature setisa specialized image for
service providers. This optimized Cisco IOS image
supports IP, X.25/PAD, X.25/IP protocol translations,
and all OSI routing and protocol translation features.
This image offers the service provider the critical
network-management features required to manage a
diverse network topology. The Cisco IOS Telco image
enhances memory utilization by stripping away
underutilized features such as Appletalk and Banion
Vines. This Cisco IOS image is specific to the Cisco DCN
environment, and isnotavailablewith Cisco IOS 12.2.2T.
TheEnterprisePlus featuresetis theCiscocomprehensive
offering of protocols, standards, and value-add
networking capabilities. This feature set includes a broad
array of QoS, LAN and WAN protocols including legacy
mainframe protocols, protocol translation, remote node
and terminal services. Additionally, the Enterprise Plus
feature set includes a number of telco-oriented features,
such as OSI and X.25 Pad, IP/X.25 protocol translation,
request for comment (RFC) 1613-XOT, TL1 transport
and TARP Storm Avoidance.
The Remote Access Services feature set includes various
management, multicast, security (excluding encryption),
protocol translation, remote node and terminal services
and some LAN and WAN service and optimization
protocols but excludes some of the capabilities found in
the Enterprise Plus feature set.
A more detailed list of features can be found in the
Cisco 2600 IOS release notes. The memory requirements
for a given feature set can be found in the Cisco 2600
software features and memory requirements product
bulletin. Note: Cisco 2600 Series modular access routers
ship with 32MB of DRAM memory and 8MB of Flash
memory as the default configuration. Some Cisco IOS
feature sets require additional memory.
Technical Specifications
• MainProcessor:80MHzRISC (Cisco265x); 50MHz
RISC (Cisco 262x); 40 MHz RISC (Cisco 261x)
• Flash Memory: 8 to 16MB (Cisco 261x); 8 to 32MB
(Cisco 262x
1
and Cisco 265x only)
• System Memory (DRAM): 32 to 64MB (Cisco 261x
and Cisco 262x); 32 to 128MB (Cisco 265x only, uses
SDRAM)
• WAN Interface Card Slots: 2
• Network Module Slot: 1
• AIM Slot: 1
• Console/Aux Speed: 115.2-Kbps (maximum)
• Width: 17.5 in. (445 mm)
• Height: 1.69 in. (43 mm)
• Depth: 11.8 in. (300 mm)
1. Support for 32MB Flash requires Cisco IOS 12.1(3)T or later.
