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Copyright © 1997 Cisco Systems, Inc.
6-59CSE: Networking Fundamentals — WAN Basics
© 1999, Cisco Systems, Inc.
www.cisco.com
Cisco 2500 Series
• Fixed-configuration access routers/ access
servers
• World’s most popular branch office
router
• Ethernet and Token Ring models
• Most models have 2 serial ports
• Frame Relay, X.25, ISDN, Switched 56
software
• Some models include:
– ISDN BRI for dial-
backup
– Integrated NT1
– Integrated DSU/CSU
– Low-speed async/
sync serial ports
– IBM support
– Integrated hub
ports
High-
Single Dual Density Router/ Mission Access
LAN LAN Serial Hubs Specific Servers
2501 2513 2520 2505 2503I 2521CF 2509
2502 2514 2521 2507 2504I 2522CF 2511
2503 2515 2522 2516 2501CF 2523CF 2512
2504 2523 2502CF 2520LF
2524 2501LF 2521LF
2525 2502LF 2522LF
2520CF 2523LF
High-
Single Dual Density Router/ Mission Access
LAN LAN Serial Hubs Specific Servers
2501 2513 2520 2505 2503I 2521CF 2509
2502 2514 2521 2507 2504I 2522CF 2511
2503 2515 2522 2516 2501CF 2523CF 2512
2504 2523 2502CF 2520LF
2524 2501LF 2521LF
2525 2502LF 2522LF
2520CF 2523LF
Rev 1.01 (Feb 99)
6-60CSE: Networking Fundamentals — WAN Basics
© 1999, Cisco Systems, Inc.
www.cisco.com
Cisco 2500 Series
Cisco 2501 1 Ethernet, 2 sync
Cisco 2502 1 Token Ring, 2 sync
Cisco 2503 1 Ethernet, 1 ISDN, 2 sync
Cisco 2504 1 Token Ring, 1 ISDN, 2 sync
Cisco 2524 1 Ethernet, 2 modular high-speed
serial, 1 modular ISDN, optional
integrated NT1 or CSU/DSU
Cisco 2525 1 Token Ring, 2 modular high-speed
serial, 1 modular ISDN,
optional integrated NT1 or CSU/DSU
Single LAN Routers
Cisco 2520 1 Ethernet, 2 serial,
2 low-speed A/S serial, 1 ISDN
Cisco 2521 1 Token Ring, 2 serial,
2 low-speed A/S serial, 1 ISDN
Cisco 2522 1 Ethernet, 2 serial,
8 low-speed A/S serial, 1 ISDN
Cisco 2523 1 Token Ring, 2 serial,
8 low-speed A/S serial, 1 ISDN
High Density Serial
Dual LAN Routers
Cisco 2513 1 Ethernet, 1 Token Ring,
2 synchronous
Cisco 2514 2 Ethernet, 2 synchronous
Cisco 2515 2 Token Ring, 2 synchronous
Access Servers
Cisco 2505 1 Ethernet, 8 hub ports,
2 synchronous
Cisco 2507 1 Ethernet, 16 hub ports,
2 synchronous
Cisco 2516 1 Ethernet, 14 hub ports,
2 synchronous, 1 ISDN
Router/Hubs
Rev 1.01 (Feb 99)
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