Table Of Contents

Overview

Supported Platforms

NPE-G100 Description

NPE-G100 Hardware MAC Address

Interfaces and LEDs

Components

System Management Functions

NPE-G100 Memory Information

Gigabit Ethernet SFP Port and Cabling Information

CWDM SFPs

Optical GigabitEthernet 1000BASESX, 1000BASELX/LH, and 1000BASEZX SFPs

1000BASESX, 1000BASELX/LH, and 1000BASEZX SFP Port Cabling Specifications

Mode-Conditioning Patch Cord Description

Gigabit Ethernet RJ-45 Port Pinouts

Overview

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This chapter describes the network processing engine (NPE-G100) and contains the following sections:

•Supported Platforms

•NPE-G100 Description

•NPE-G100 Memory Information

•Gigabit Ethernet SFP Port and Cabling Information

Supported Platforms

The NPE-G100 is only supported on the Cisco 7304 router.

NPE-G100 Description

This section contains information about the NPE-G100 components and the system management functions. The NPE-G100 contains the Route Processor that maintains and executes the system management functions, as well as the forwarding path and forwarding packet functions, and also holds the system memory and environmental monitoring functions for the Cisco 7304 router.

The NPE-G100 consists of one board with multiple interfaces.

NPE-G100 Hardware MAC Address

Each native Gigabit Ethernet port on the NPE-G100 can support up to 8 hardware MAC addresses. Each ports hardware MAC addresses are stored in a hardware MAC address filtering table. With two NPE-G100s installed, the chassis can support up to six native Gigabit Ethernet ports.

Interfaces and LEDs

Figure 1-1 NPE-G100 Faceplate Identification

1	Locking lever	6	CompactFlash Disk (disk0:)
2	Reset	7	Console port
3	Gigabit Ethernet RJ-45 and SFP port 0	8	Auxiliary port
4	Gigabit Ethernet RJ-45 and SFP port 1	9	Captive installation screw
5	Gigabit Ethernet RJ-45 and SFP port 2

The three interfaces on the NPE-G100 consist of three Gigabit Ethernet (small form-factor pluggable) SFP ports and three 10/100/1000 RJ-45 Ethernet/Fast Ethernet/Gigabit Ethernet ports. The rules for using these ports are:

•Only one port per interface can be used at any one time. For example, for interface Gigabit Ethernet 1, either the RJ-45 port can be used or the SFP port, but not both.

•A total of three ports on any of the three interfaces (0, 1, or 2) can be used at any one time; for example, SFP port 0, SFP port 1, and RJ-45 port 2.

Figure 1-2 NPE-G100 LEDs

No.	LED Label	LED	Purpose	Color	LED Color Status
1	Active	Active	Indicates this NPE-G100 is the active NPE	Green	Solid green when this NPE is the active NPE
				Off	Off when this NPE is not the active NPE
2	Standby	Standby	Indicates this NPE-G100 is the redundant or secondary NPE	Green	Solid green when this NPE is the standby NPE
				Off	Off when this NPE is not active
3	System-Up	System-Up	System status	Green	Green when Cisco IOS is up and running
				Amber	•When ROMmon is booting up •When ROMmon is hanging before the system completes the bootup process •When ROMmon detects a fatal hardware error
				Off	Between amber when ROMmon is booting, and solid green when Cisco IOS is up and running
4	LINK (Interfaces 0, 1, 2)	RJ-45 and SFP ports	—	Green	On, indicating that a link has been established
				Off	Off when LINK is not up
5	EN (Enable) (Interfaces 0, 1, 2)	RJ-45 ports only	—	Green	On if the RJ-45 port is selected
				Off	Off if the SFP port is selected
6	Disk 0	CompactFlash Disk	—	Green	Solid green when the disk is being used Blinking when the disk is being accessed

The NPE-G100 faceplate contains LEDs that indicate system and port status. The RJ-45 and SFP ports share the same LINK LED because only one of these ports per interface (0, 1, or 2) can be used at any one time. The EN (Enable) LED is on if the RJ-45 port is in use.

Components

Figure 1-3 NPE-G100

1	Lithium battery	9	Midboard temperature sensor
2	Midplane connectors	10	Inlet temperature sensor
3	Outlet temperature sensor	11	CompactFlash Disk (disk0:)
4	bootdisk:	12	Console port
5	Gigabit Ethernet port 0	13	Auxiliary port
6	Gigabit Ethernet port 1	14	SODIMM 1 (J3)
7	Gigabit Ethernet port 2	15	SODIMM 2 (J4)
8	BCM 1250 processor system

The NPE-G100 consists of the following components:

•BCM 1250 processor system:

–Microprocessor operates at an internal clock speed of 800 Mhz.

–Hardware logic to interconnect the processor, dual double data rate synchronous dynamic random-access memory (DDR-SDRAM), hypertransport (HT) interface, the generic PCI bus, and the two midplanes.

–Cache memory—The NPE-G100 has two levels of cache: primary and secondary cache that are internal to the BCM 1250 processor system with secondary unified cache for data and instruction.

•DDR-SDRAM for providing code, data, and packet storage.

•Three environmental sensors for monitoring the cooling air as it enters, moves across the system board, and leaves the chassis.

•Three Gigabit Ethernet interfaces (six connectors: three Gigabit Ethernet SFP [optical] and three 10/100/1000 RJ-45s [copper]). For each interface, either the Gigabit Ethernet SFP or the RJ-45 port is available. The ports are linked directly to the BCM 1250 processor system.

•CompactFlash Disk: Stores sufficient code for booting the Cisco IOS boot loader image (bootdisk:).

•NVRAM for storing the system configuration and environmental monitoring logs. NVRAM uses a lithium battery to maintain its contents when disconnected from power.

•Upgradeable boot ROM for storing the ROMmon image and upgrading the system to newer versions of the ROMmon image. There are two upgradeable boot ROMs for storing the ROMmon image.

•Non-upgradeable boot ROM provides a "golden copy" of the default ROMmon image.

•Auxiliary port with full data terminal equipment (DTE) functionality.

•Console port with full data communications equipment (DCE) functionality.

•ECC (error correction code) system memory and internal L2 cache support.

System Management Functions

The NPE-G100 performs the following system management functions in additon to packet forwarding:

•Sending and receiving routing protocol updates

•Managing tables, caches, and buffers

•Monitoring interface and environmental status

•Providing Simple Network Management Protocol (SNMP) management

•Booting and reloading images

•Managing line cards (including recognition and initialization during online insertion and removal)

•High availability (HA) support and management for two NPE-G100s, one active and one standby

•Routing and forwarding traffic

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Caution Two NPE-G100s or two NSE-100s are supported in the Cisco 7304. You cannot use both an NPE-G100 and NSE-100 in the same router.

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NPE-G100 Memory Information

To determine the memory configuration of your NPE-G100, use the show version command.

The following example shows an NPE-G100 installed in a Cisco 7304 router:

Router# show version

Cisco Internetwork Operating System Software 

IOS (tm) 7300 Software (C7300-JS-M), Version 12.2(WINDSTAR_ISP.030330.), CISCO DEVELOPMENT 
TEST VERSION

Copyright (c) 1986-2003 by cisco Systems, Inc.

Compiled Sun 30-Mar-03 06:15 by 

Image text-base:0x40008B50, data-base:0x423F8000

ROM:System Bootstrap, Version 12.2(14r)SZ, RELEASE SOFTWARE (fc1)

Currently running ROMMON from ROM 2

BOOTLDR:7300 Software (C7300-BOOT-M), Version 12.2(WINDSTAR_ISP.030330.), CISCO 
DEVELOPMENT TEST VERSION

G100 uptime is 19 minutes

System returned to ROM by reload at 16:06:46 EST Sat Feb 19 2000

System restarted at 16:10:01 EST Sat Feb 19 2000

System image file is "tftp://10.0.0.0/g100/c7300-js-mz.999-99.WINDSTAR_ISP_UB_030330"

cisco 7300 (NPEG100) processor (revision 0x00) with 229376K/32768K bytes of memory.

Processor board ID SCA07020053

SB-1 CPU at 700Mhz, Implementation 1025, Rev 0.2, 512KB L2 Cache

4 slot midplane, Version 67.49

Last reset from software reset or reload

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

TN3270 Emulation software.

3 Gigabit Ethernet/IEEE 802.3 interface(s)

6 Serial network interface(s)

2 Packet over SONET network interface(s)

1021K bytes of non-volatile configuration memory.

31744K bytes of ATA compact flash in bootdisk (Sector size 512 bytes).

62720K bytes of ATA compact flash in disk0 (Sector size 512 bytes).

Configuration register is 0x0

Table 1-1 provides memory specifications and Table 1-2 provides user-replaceable memory configuration information for the NPE-G100.

Table 1-1 NPE-G100 Memory Specifications  

Memory Type	Memory Size	Quantity	Description	Location on NPE-G100 Board
SDRAM	256, 512 MB, or 1 GB	2	512-MB SODIMMs	J3, J4
Non-upgradeable boot ROM	512 KB	1	OTP1 ROM for the ROM monitor (ROMmon)	U15
NVRAM	512 KB	2	Configuration and crash information files	U1, U7
Upgradeable boot ROM	1 MB	2	Programmable ROM	U26, U64
Flash memory	disk0: 256 MB bootdisk: 32 MB	1	CompactFlash Disks	External (disk0:)
Primary cache	16 KB (instruction), 16 KB (data)	—	BCM 1250 processor system, internal cache	U24
Secondary cache	512 KB	—	BCM 1250 processor system; internal, unified instruction and data cache	U24

1 OTP = one-time programmable. Although the OTP ROMmon cannot be upgraded, the boot code can be upgraded using the Cisco IOS software. If the boot code is upgraded, the updated boot code is stored in upgradeable boot ROM.

Table 1-2 NPE-G100 SODIMM Configurations—Configurable Memory

Total SDRAM	SDRAM SODIMMs	Quantity	Product Number
1 GB	J3 and J4	2 512-MB SODIMMs	7304-MEM-G100-1GB=

Table 1-3 CompactFlash Disk Configurations

Memory Size	Product Number
256 MB	7300-I/O-CFM-256M=

Table 1-4 Optical Gigabit Ethernet SFP Module Configurations

Type	Product Number
Short wavelength (1000BASESX)	GLC-SX-MM=
Long wavelength/long haul (1000BASELX/LH)	GLC-LH-SM=
Extended distance wavelength (1000BASEZX)	GLC-ZX-SM=

Table 1-5 CWDM Gigabit Ethernet SFP Module Configurations

GBIC Product Number	Wavelength
CWDM-SFP-1470=	Longwave 1470 nm laser, single mode
CWDM-SFP-1490=	Longwave 1490 nm laser, single mode
CWDM-SFP-1510=	Longwave 1510 nm laser, single mode
CWDM-SFP-1530=	Longwave 1530 nm laser, single mode
CWDM-SFP-1550=	Longwave 1550 nm laser, single mode
CWDM-SFP-1570=	Longwave 1570 nm laser, single mode
CWDM-SFP-1590=	Longwave 1590 nm laser, single mode
CWDM-SFP-1610=	Longwave 1610 nm laser, single mode

Gigabit Ethernet SFP Port and Cabling Information

The following sections describe the SFPs supported for the NPE-G100:

•CWDM SFPs

•Optical GigabitEthernet 1000BASESX, 1000BASELX/LH, and 1000BASEZX SFPs

•1000BASESX, 1000BASELX/LH, and 1000BASEZX SFP Port Cabling Specifications

•Mode-Conditioning Patch Cord Description

•Gigabit Ethernet RJ-45 Port Pinouts

CWDM SFPs

CWDM SFPs were first supported on the NPE-G100 in Cisco IOS Release 12.2(28)SB. CWDM SFPs for the NPE-G100 come in eight wavelengths that range from 1470 nm to 1610 nm. Color markings on the devices identify the wavelength to which the Gigabit Ethernet channel is mapped. Table 1-6 lists the CWDM SFPs with their wavelengths and color codes that are supported on the NPE-G100.

Table 1-6 CWDM GBIC Wavelengths and Color Coding

GBIC Product Number	Wavelength	Color Identifier
CWDM-SFP-1470=	Longwave 1470 nm laser, single mode	Gray
CWDM-SFP-1490=	Longwave 1490 nm laser, single mode	Violet
CWDM-SFP-1510=	Longwave 1510 nm laser, single mode	Blue
CWDM-SFP-1530=	Longwave 1530 nm laser, single mode	Green
CWDM-SFP-1550=	Longwave 1550 nm laser, single mode	Yellow
CWDM-SFP-1570=	Longwave 1570 nm laser, single mode	Orange
CWDM-SFP-1590=	Longwave 1590 nm laser, single mode	Red
CWDM-SFP-1610=	Longwave 1610 nm laser, single mode	Brown

For more detailed information on these CWDM SFP modules, see the Cisco CWDM GBIC and SFP Solution Data Sheet.

Optical GigabitEthernet 1000BASESX, 1000BASELX/LH, and 1000BASEZX SFPs

The optical Gigabit Ethernet SFP modules listed in Table 1-7 can be used with the NPE-G100 on any Cisco IOS release that can run a Cisco 7304 router using an NPE-G100.

Table 1-7 Gigabit Ethernet SFP Module Products, Descriptions, and Operating Distances 

Product Number	SFP Module	Description	Operating Distance
GLC-SX-MM=	Short wavelength (1000BASESX)	Contains a Class 1 laser of 850 nm for 1000BASESX (short-wavelength) applications.	Operates on standard multimode fiber-optic link spans of up to 1804 feet (550 m).
GLC-LH-SM=	Long wavelength/ long haul (1000BASELX/LH)	Contains a Class 1 laser of 1300 nm for 1000BASELX/LH (long-wavelength) applications.	Operates on single-mode fiber-optic link spans of up to 6.2 miles (10 km) or multimode spans up to 1804 feet (550 m) with mode-conditioning patch cord.
GLC-ZX-SM=	Extended distance wavelength (1000BASEZX)	Contains a Class 1 laser of 1550 nm for 1000BASEZX (extended wavelength) applications.	Operates on ordinary single-mode fiber-optic link spans of up to 43.5 miles (70 km). Link spans of up to 62.1 miles (100 km) are possible using premium single-mode fiber or dispersion-shifted single-mode fiber (premium single-mode fiber has a lower attenuation per unit length than ordinary single-mode fiber; dispersion-shifted single-mode fiber has both lower attenuation and less dispersion).

1000BASESX, 1000BASELX/LH, and 1000BASEZX SFP Port Cabling Specifications

The Gigabit Ethernet SFP port is a 1000-Mbps optical interface in the form of an LC-type duplex connection for the 1000BASESX and 1000BASELX interfaces compliant with IEEE 802.3z.

Table 1-8 provides cabling specifications for the SFP modules that you install in Gigabit Ethernet devices. Note that all SFP ports have LC-type connectors. Also, the minimum cable distance for the SFP GLC-SX-MM multimode fiber (MMF) and SFP GLC-LH-SM single-mode fiber (SMF) is 6.5 feet (2 m).

Table 1-8 SFP Port Cabling Specifications 

SFP Module	Wave- length (nm)	Fiber Type	Core Size (micron)	Modal Bandwidth (MHz/km)	Maximum Cable Distance
GLC-SX-MM=	850	MMF1	62.5	160	722 ft (220 m)
			62.5	200	902 ft (275 m)
			50.0	400	1640 ft (500 m)
			50.0	500	1804 ft (550 m)
GLC-LH-SM=	1300	MMF2 and SMF	62.5	500	1804 ft (550 m)
			50.0	400	1804 ft (550 m)
			50.0	500	1804 ft (550 m)
			9/10	—	6.2 miles (10 km)
GLC-ZX-SM=3	1550	SMF and	9/10	—	43.5 miles (70 km)
		SMF4	8	—	62.1 miles (100 km)

1 Multimode fiber (MMF) only. 2 A mode-conditioning patch cord is required. When using the SFP GLC-LH-SM with 62.5-micron diameter MMF, you must install a mode-conditioning patch cord between the SFP module and the MMF cable on both the transmit and the receive ends of the link when link distances are greater than 984 ft (300 m). We do not recommend using the SFP GLC-LH-SM and MMF with no patch cord for very short link distances (tens of meters). The result could be an elevated bit error rate (BER). 3 You can have a maximum of 12 1000BASEZX SFP modules per system to comply with EN55022 Class B and 24 1000BASEZX SFP modules per system to comply with FCC Class A regulations. 4 Dispersion-shifted single-mode fiber-optic cable

Mode-Conditioning Patch Cord Description

A mode-conditioning patch cord can be used with the GLC-LH-SM= to allow reliable laser transmission between the single-mode laser source on the GBIC and a multimode optical fiber cable.

When an unconditioned laser source designed for operation on single-mode optical fiber is directly coupled to a multimode optical fiber cable, an effect known as differential mode delay (DMD) might result in a degradation of the modal bandwidth of the optical fiber cable.

This degradation results in a decrease in the link span (the distance between a transmitter and a receiver) that can be supported reliably. The effect of DMD can be overcome by conditioning the launch characteristics of a laser source. A practical means of performing this conditioning is to use a device called a mode-conditioning patch cord.

A mode-conditioning patch cord is an optical fiber cable assembly that consists of a pair of optical fibers terminated with connector hardware. Specifically, the mode-conditioning patch cord is composed of a single-mode optical fiber permanently coupled off-center (see Offset in Figure 1-4) to a graded-index multimode optical fiber. Figure 1-4 shows a diagram of the mode-conditioning patch cord assembly.

The mode-conditioning patch cord assembly is composed of duplex optical fibers, including a single-mode-to-multimode offset launch fiber connected to the transmitter, and a second conventional graded-index multimode optical fiber connected to the receiver. The use of a plug-to-plug patch cord maximizes the power budget of multimode 1000BASE-LX and 1000BASE-LH links.

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Note The mode-conditioning patch cord is required to comply with IEEE standards. The IEEE found that link distances could not be met with certain types of fiber-optic cable cores. The solution is to launch light from the laser at a precise offset from the center, which is accomplished by using the mode-conditioning patch cord. At the output of the patch cord, the GBIC-LX/LH is compliant with the IEEE 802.3z standard for 1000BASE-LX.

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Figure 1-4 Mode Conditioning Patch Cord

1	Gray color identifier	5	Single-mode bar
2	To GE interface	6	Offset
3	Blue color identifier	7	Beige color identifier
4	Multimode bar	8	To cable plant
1	Gray color identifier	5	Single-mode bar

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Note Figure 1-4 shows one type of mode-conditioning patch cord.

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Gigabit Ethernet RJ-45 Port Pinouts

The Cisco 7304 router has RJ-45 ports for the three 10/100/1000 Ethernet/Fast Ethernet/Gigabit Ethernet connections. The RJ-45 ports support IEEE 802.3ab (Gigabit Ethernet) and IEEE 802.3u (Fast Ethernet) interfaces compliant with 10BASET, 100BASETX, and 1000BASET specifications.

The RJ-45 ports support standard straight-through and crossover Category 5 UTP cables with RJ-45 connectors. Cisco Systems does not supply Category 5 UTP cables; these cables are available commercially.

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Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

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Figure 1-5 shows an RJ-45 port and connector. Table 1-9Table 1-9 lists the pinouts and signals for the RJ-45 port.

Figure 1-5 RJ-45 Port and Connector

1

RJ-45 connector

Table 1-9 RJ-45 Receptacle Pinouts 

Pin	FE Signal	GE Signal
1	TX DATA+1	Tx A+
2	TX DATA-	Tx A-
3	RX DATA+2	Rx B+
4	N/C	Tx C+
5	N/C	Tx C-
6	RX DATA-	Rx B-
7	N/C	Rx D+
8	N/C	Rx D-

1 TX DATA = Transmit Data 2 RX DATA = Receive Data