. two slots for personal computer memory card international association (pcmcia) cards (cisco 3620, cisco 3640, and cisco 3660 routers)
. flash memory capability
. sockets for memory modules; either:
- four sockets for dram single in-line memory modules (simms), user-configurable as shared memory or main (processor) memory (cisco 3620 and cisco 3640 routers) or
- two sockets for sdram dual in-line memory modules (dimms), user-configurable as shared memory or main (processor) memory (cisco 3631 and cisco 3660 routers)
. high-speed console and auxiliary ports (up to 115.2 kbps)
. hardware thermal alarm to warn of excessively high operating temperature
figure 1-1 through figure 1-4 show the front panels of the routers.
the cisco 3620 router includes these additional features:
. high-performance 80-mhz reduced instruction set computer (risc) processor
. two slots for network modules
. can be installed in a 19-, 23-, or 24-inch rack, on a wall, or on a desk
. cisco redundant power system
cisco 3620 and cisco 3640 routers can be connected to the cisco redundant power system (rps). for more information, refer to the cisco rps hardware installation guide.
the cisco 3631 router includes these additional features:
. high-performance 240-mhz pmc-sierra rm7061a risc processor
. one 10/100 ethernet port
. two slots for network modules
. one compact flash memory card slot
. one aim slot
. 2 wic/vic slots
. can be installed in a 19- or 23-inch rack or on a desk
. cisco redundant power system (ac)
the cisco 3640 router includes these additional features:
. high-performance 100-mhz risc processor
. four slots for network modules
. can be installed in a 19-, 23-, or 24-inch rack, on a wall, or on a desk
. cisco redundant power system
cisco 3620 and cisco 3640 routers can be connected to the cisco redundant power system (rps). for more information, refer to the cisco rps hardware installation guide.
the cisco 3660 router includes these additional features:
. high-performance 225-mhz risc processor installed on a removable mainboard tray
. six slots for hot swapping similar network modules
. can be installed in a 19- or 23-inch rack, or on a desk
. dual redundant, hot-swappable power supplies (second power supply is optional)
. hot-swappable fan cage used to cool the chassis
. one or two onboard, autosensing, 10/100 fast ethernet interfaces
supports two advanced interface module (aim) cards
the cisco 3660 router platform consists of two router models: cisco 3661 and cisco 3662. the cisco 3661 router with one fast ethernet interface (part number cisco3661-xc) is shown in figure 1-5, and the cisco 3662 router with two fast ethernet interfaces (part number cisco3662-xc or cisco3662-xc-co) is shown in figure 1-6.
figure 1-5 and figure 1-6 show cisco 3660 ac power supplies installed. the dc power supplies differ in appearance but occupy the same bays in the router.
in this publication, references to cisco 3660 routers include both cisco 3661 and cisco 3662 models.6
