Specifications

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Cisco 7100 Series VPN Router Installation and Configuration Guide
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Chapter 1 Overview
Functional Overview
– Cisco 7140 series routers have three levels of cache: a primary and a secondary cache that are
internal to the microprocessor and a tertiary, 2-MB (fixed) external cache that provides
additional high-speed storage for data and instructions.
• Four environmental sensors—Monitor the cooling air as it leaves the chassis.
• Boot ROM—Stores sufficient code for booting the Cisco IOS software.
• Flash memory single in-line memory module (SIMM)—Stores the boot image used to boot the
router.
• NVRAM—Stores the system configuration and environmental monitoring logs (the NVRAM uses
lithium batteries to maintain its contents when disconnected from power).
• Console port—Provides access for a local terminal and is equipped with an RJ-45 receptacle.
• Auxiliary port—Provides access for a modem for remote access and is equipped with an RJ-45
receptacle.
• Two fixed LAN ports—Provide 10BaseT/100BaseTX autosensing Ethernet/Fast Ethernet (full and
half duplex) and are equipped with an RJ-45 receptacle.
• Two PC Card slots—Contain Flash Disks or Flash memory cards that provide the default Cisco IOS
software image.
Table 1-15 describes the memory types on the network processor card.
Table 1-15 Network Processor Memory Components
Memory Type Size Quantity Description Location
SDRAM
memory
64 to 128 MB 2 configurable
1
SDRAM slots
64–128-MB DIMMs
(based on maximum
SDRAM required)
DIMM 1 = U13
DIMM 2 = U14
Boot ROM 512 KB 1 OTP
2
ROM for the ROM
monitor program
Socket U21