Juniper FEB-M7I-SVCS-S-B Enhanced Forwarding Engine/ Services
Mod for M7i Router
In Good Condition
In Full Working Order
- 1 x Juniper FEB-M7I-SVCS-S-B Enhanced Forwarding Engine for M7i Router
- 1 x Adaptive Services Module - 750-015931
The CFEB provides the following functions:
- Route lookups - Performs route lookups using the forwarding table stored in the synchronous SRAM (SSRAM) on CFEBs or stored in the RLDRAM on CFEB-Es.
- Management of shared memory - Uniformly allocates incoming data packets throughout the router's shared memory.
- Transfer of outgoing data packets - Passes data packets to the destination FIC or PIC when the data is ready to be transmitted.
- Transfer of exception and control packets - Passes exception packets to the microprocessor on the CFEB or CFEB-E, which processes almost all of them. The remainder are sent to the Routing Engine for further processing. Any errors originating in the Packet Forwarding Engine and detected by the CFEB or CFEB-E are sent to the Routing Engine using system log messages.
- Built-in tunnel interface - Encapsulates arbitrary packets inside a transport protocol, providing a private, secure path through an otherwise public network.
- The built-in tunnel interface on the CFEB or CFEB-E is configured the same way as a PIC. For information about configuring the built-in tunnel interface, see the Junos OS Services Interfaces Library for Routing Devices.
- Optional Adaptive Services Module (ASM)—Provides one or more services on one PIC. See M7i Adaptive Services Module for more information.
- The CFEB and CFEB-E are hot-pluggable when you replace a CFEB with a CFEB or a CFEB-E with a CFEB-E. Upgrading or downgrading a CFEB device requires a system reboot, as described in Upgrading and Downgrading the CFEB and CFEB-E. You can remove and replace the CFEB or CFEB-E without powering down the router, but the routing functions of the system are interrupted when it is removed.
The CFEB has the following major components:
- 266-MHz CPU and supporting circuitry
- Integrated ASIC
- 33-MHz PCI bus
- 128-MB SDRAM for packet memory
- 128-MB SDRAM for the microkernel
- 8-MB SSRAM for route lookup
- 4-MB SSRAM for control memory
- Built-in tunnel interface
- Optional Adaptive Services Module
- 100-Mbps link for internal interface to the Routing Engine
- 19.44-MHz reference clock—Generates clock signal for SONET/SDH PICs.
- I2C controller to read the I2C/EEPROMs in the PICs and temperature sensors
- I2C/EEPROM containing the serial number and revision level
- Two 512-KB boot flash EPROMs (programmable on the board)
- One PowerPC 8245 integrated processor
- Three LEDs—A green LED labeled OK, a red LED labeled FAIL, and a blue LED labeled MASTER indicate CFEB status.
- Online/Offline button—Prepares the CFEB for removal from the router when pressed.
- Ejector levers—Control the locking system that secures the CFEB in the chassis.
Adaptive Services Module
The Adaptive Services Module is an optional component of the CFEB and CFEB-E. The Adaptive Services Module is similar to the standalone Adaptive Services PIC, but operates at a reduced bandwidth. The Adaptive Services Module enables you to perform one or more services on the same PIC by configuring a set of services and applications.
The Adaptive Services Module provides the following services:
- Stateful firewall - A type of firewall filter that considers state information derived from previous communications and other applications when evaluating traffic.
- Network Address Translation (NAT) - A security procedure for concealing host addresses on a private network behind a pool of public addresses.
- Intrusion detection services (IDS) - A set of tools for detecting, redirecting, and preventing certain kinds of network attack and intrusion.
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