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Cisco Line Cards

Cisco 12000 Series Three-Port Gigabit Ethernet Line Card

 

Data Sheet


Cisco 12000 Series Three-Port Gigabit Ethernet Line Card


Providing Service Providers with High-Throughput and Cost-Effective Connectivity

Figure 1
Cisco 12000 Series Three-Port Gigabit Ethernet Line Card

Cisco® offers the Cisco 12000 Series Three-Port Gigabit Ethernet Line Card (3-Port GbE) to address the needs for interconnecting devices within points of presence (POPs) at gigabit rates. The Cisco 3-Port GbE Line Card is the second Ethernet-based product for the Cisco 12000 Series, providing a cost-effective, high-bandwidth solution. This compelling solution is sought by Internet service providers (ISPs) with large Web hosting equipment such as servers, caches, edge routers, Gigabit Ethernet switches, and so on, who are looking for cost-effective links between their Cisco 12000 Series Routers and other network equipment.

This new line card, depicted in Figure 1, can be configured with up to three of the following interface types: a 1000BASE-SX multimode fiber interface with up to a 550-meter reach, a 1000BASE-LH single-mode fiber interface with up to a 10-km reach, or a 1000BASE-ZX single-mode fiber interface with up to a 70-km reach.

Feature Summary

Packet Layer

  • Layer 3 quality-of-service (QoS) support, providing differentiated services
  • Virtual output queues
  • Weighted Random Early Detection (WRED) Modified Deficit Round Robin (MDRR)
  • Application-specific integrated circuit (ASIC)-based Layer 3 Forwarding and queuing engine for Internet-scale performance
  • Multiple virtual output queues optimizing class of service (CoS) by minimizing latency and eliminating head-of-line blocking
  • A local forwarding table that can accommodate up to one million forwarding entries 512-kB burst buffers in Tx and Rx directions to smooth out bursty traffic
  • 256-MB default packet buffer memory to maximize TCP goodput
  • Scalable up to 512 MB
  • Configurable with up to 256 MB of code and route table memory

Ethernet Upper Layers

  • Ethernet frame size up to 9180 bytes1
  • Media Access Control (MAC) with full-duplex operation
  • 8/10B encoding/decoding
  • Optional 1000BASE-SX multimode 550-meter interface, 1000BASE-LX 10-km interface, or 1000BASE-ZX single-mode 70-km interface, compliant with IEEE 802.3z specifications

Physical Layer

  • SC duplex connectors
  • Error-Correcting Code

Software Features

Table 1   Software Features for the Cisco 12000 Series Three-Port Gigabit Ethernet Line Card

Features   Benefits  
Auto-Negotiation

A link protocol that automatically selects full-duplex operation when enabled.

Flow Control (receive)

Rx flow control is negotiated with the remote end by responding to the received PAUSE frames.

Precedence Setting/Mapping

Allows the IP packet to be delivered with QoS for different classes of applications.

Access Control List (xACL)

Extended access control lists used to provide access control by filtering out unwanted packets; with xACL, filtering can be done on source destination IP addresses and transport protocols using their source and destination address; ACLs can be up to 448 lines long.

Hot-Standby Router Protocol (HSRP)

Provides automatic router backup when configured on Cisco routers that run the Internet Protocol (IP).

Cisco Group Management Protocol (CGMP)

Cisco multicast control mechanisms that provide efficient distribution of multicast video/data streams at all networking layers.

Multiprotocol Label Switching (MPLS/Tag Switching)

Uses labels, or tags, that contain forwarding information, which are attached to IP packets by a router; 3-Port GbE supports MPLS-P (provider) switching, traffic engineering (TE), MPLS-PE (provider edge) QoS to support real-time voice and video as well as Service-Level Agreements (SLAs) that guarantee bandwidth, virtual private networks (VPNs), and CoS in network core applications.

802.1Q Virtual Local-Area Network (VLAN)

VLANs logical subgroup within a LAN that is created via software; combines user stations and network devices into a single unit, regardless of the physical LAN segment. 3-Port GbE can support up to 1K VLANs per card and all the VLANs can be in one port or can be divided into many ports. Over all VLAN limitation for the box is dependent on the number of IDBs supported by the IOS and from 12.0.21S, this limit is at 2000 for the whole system.

Error-Correcting Code (ECC)

Memory that corrects errors on the fly.

Weighted Random Early Detection (WRED)

Congestion control or query management; allows selective discard of low-priority flows before dropping packets from higher-priority flows.

Modified Deficit Round Robin (MDRR)

Uses class-based packet queuing to control the packet dequeuing process in a manner that allows the users to guarantee transit latency for differentiated flows.

Features and Benefits

Table 2   Features and Benefits Summary for the Three-Port Gigabit Ethernet Line Card

Features   Benefits  
IEEE 802.3z Standards Compliant

Used to connect to Gigabit Ethernet switches or Gigabit Ethernet IP port adapters of Cisco 7500 Series Routers

Standardized on GBIC Module Interfaces (1000BASE-SX 550 meters, multimode and 1000BASE-LH 10 km, single mode, and 1000BASE-ZX, single mode 70 km)

Provides flexibility in network design with reach capability up to 70 km; hot-swappable GBIC unit enables change/replacement without the need to power down the line card

Supports IEEE 802.1q VLAN Tagging

Gigabit Ethernet link can be used as a VLAN trunk

Support for IP QoS/CoS, Including ACL and MPLS/Tag Switching

Enables traffic engineering solutions to increase network utilization and provide basis for offering differentiated CoS models

128-MB Packet Buffer Memory and 512-KB Burst Buffers for Each Rx and Tx Direction, Upgradable to 256-MB for Each Direction

Maximizes TCP/IP throughput and smoothes out all traffic bursts

Forwarding Table with up to One Million Forwarding Entries

Allows for phenomenal growth well beyond today's Internet with 240,000 route entries

Minimum Very Long Reach (ZX) Link Power Budget Parameter

10µm SMF UNit Link Power Budget 21-db; operating distance 70,000 meter

ECC

Memory that corrects errors on the fly

WRED

Congestion control or query management; allows selective discard of low-priority flows before dropping packets from higher-priority flows

MDRR

Uses class-based packet queuing to control the packet dequeuing process in a manner that allows the users to guarantee transit latency for differentiated flows

Cisco 3-Port GbE Line Card Features Flexible and Expandable Packet Buffer Memory

Depending on the network topology, sufficient buffering must be available on Layer 3 line cards to satisfy queuing requirements for the network at gigabit rates. The largest queuing requirement would be 120 MB of memory. The Cisco 12000 Series line cards implement the buffering memory with SDRAM modules, giving users the flexibility to install the requirements for their applications and to upgrade their requirement when necessary. The Cisco 12000 Series Gigabit Ethernet line cards provide 256-MB and 512-MB SDRAM options. Other features include:

  • Multiple virtual output queues, eliminating head-of-line blocking
  • ASICs-based queuing, providing line-rate queue performance
  • Layer 3 QoS support, providing differentiated services

The packet memory option on the Cisco 3-Port GbE Line Card is different from some existing line cards. The memory on the 3-Port GbE Line Card runs at 100 MHz, versus 50 MHz for some existing line cards. (See Table 3.)

Table 3   Packet Memory Options

Part Numbers   Description  
Default- 256 MB

128/128 Tx/Rx line-card buffer memory (4 x 64 MB)

MEM-PKT-512-UPG(=)

Option upgrade 256/256 Tx/Rx line-card buffer memory (4 x 128 MB)

Cisco 12000 Series Gigabit Ethernet Line Cards Feature Flexible and Expandable Routing Table Memory

These line cards support Cisco Express Forwarding (CEF). This technique implements a distributed architecture within the platform whereby each line card can make its own decision in forwarding packets in the network. Away from the data path, the route processor card maintains the routing tables and transports a full image of its routing table to every line card.

As the number of networks that make up the Internet grows, the number of entries in the routing tables will grow as well. The Cisco 12000 Series Gigabit Ethernet line cards implement an expandable routing table with the addition of DRAM modules, which provide flexibility to the user. The expandable DRAM options range from 128 MB to 256 MB. The forwarding table can accommodate up to one million forwarding entries. (See Table 4.)

Table 4   Route Memory Options

Part Number   Description  
MEM-DFT-LC-2X64

128-MB line card program/route memory (2 x 64 MB)

MEM-GRP/LC-128

Option upgrade 128-MB GRP and line-card route memory (1 x 128 MB)

MEM-GRP/LC-256

Option upgrade 256-MB GRP and line-card program/route memory (2 x 128 MB)

Switch Card Requirement

At minimum, full bandwidth fabric cards must be installed in your Cisco 12000 Series Router (one clock scheduler and three switch fabric cards).

Specifications

Physical

  • Occupies a single slot
  • Weight: 6 lb (2.7 kg)
  • Height: 14.5 in. (35.6 cm)
  • Depth: 18.5 in. (45.7 cm)

Environmental

  • Operating temperature: 32 to 104° F (0 to 40° C)
  • Storage temperature: -4 to 149° F (-20 to 65° C)
  • Relative humidity: 10 to 90%, noncondensing

Regulatory Compliance

Safety

  • UL 1950, Third Edition
  • CSA C22.2, No. 950-95, Third Edition
  • EN 60950
  • AUSTEL TS001
  • AS/NZS 3260
  • EN 60825 Laser Safety (Class 1)
  • IEC 950

Network Equipment Building Systems Level 3

Electromagnetic Emissions Certification

  • FCC Class A
  • AS 3548 Class B
  • EN 55022 Class B
  • VCCI Class B
  • CISPR 22 Class B

Immunity

  • IEC-1000-4-2 ESD
  • IEC-1000-4-3 radiated immunity
  • IEC-1000-4-4 EFT
  • IEC-1000-4-5 surge
  • IEC-1000-4-6 low-frequency common immunity
  • IEC-1000-4-11 voltage dips and sags
  • IEC-1000-3-2 power line harmonics

LEDs

  • Link
  • Active (port)
  • Tx activity
  • Rx activity

Connector

  • SC-duplex connector

Network Management

  • CiscoView
  • Simple Network Management Protocol (SNMP)
  • Management Information Base II (MIB-II)

System Feature

  • Hot-swap without system interruption

Optical Power Budget

Table 5   Minimum Long-Haul Link Power Budget

Parameter   10µm SMF   Unit  

Link Power Budget

10.5

db

Operating Distance

10,000

m

Table 6   Minimum 1000BASE-SX Link Power Budget

Parameter   MMF   Unit  

Modal Bandwidth (measured at 850 nm)

500

MHz*km

Link Power Budget

7.5

db

Operating Distance

550

m

Ordering and Availability

The Cisco 12000 Series Three-Port Gigabit Ethernet Line Card is orderable now.

Table 7   Cisco 12000 Series Three-Port Gigabit Ethernet Line Card Availability

Product Number   Description   Availability   Cisco IOS® Release  

3GE-GBIC-SC(=)

  • Three-Port Gigabit Ethernet Line Card with default 128-MB code and route table memory
  • 128/128 MB Tx/Rx packet buffer memory

Now

Cisco IOS 12.(11)S3 or higher

WS-G5484

1000BASE-SX GBIC module with multimode fiber interface, SC connector, 550 meters

Now

 

WS-G5486

1000BASE-LH GBIC module with single-mode fiber interface, SC connector, up to 10 km

Now

 

WS-G5487

1000 BASE-VLR GBIC module with single-mode fiber interface, SC connector, up to 70 km

Now

 


Note:    The Cisco 3-Port GbE Line Card must be configured with WS-G5484, WS-G5486, or WS-G5487 modules. No third-party GBIC is currently approved by Cisco Systems®.


Special Notes

1. When filling in the Cisco 3-Port GbE Line Card sales order, do not use the following Cisco 7500 GBIC components: GBIC-SX, GBIC-SX=, GBIC-LX, GBIC-LX=.

2. When employing the Cisco 12008 or 12012 with Cisco 3-Port GbE Line Card, please ensure that the system is configured with full bandwidth (one clock scheduler card and three switch fabric cards).

3. 3GE-GBIC-SC(=) and the GBIC part numbers can be ordered individually as spares.

4. MPLS-enabled Ethernet frames that are smaller than 2450 bytes can be switched without fragmentation. From 12.0.22S, this 2450 bytes size was extended to support 9180 bytes.

Service and Support

Cisco Systems offers a wide range of service and support offerings for its service provider customers. Cisco has earned the highest customer satisfaction ratings in the industry by providing the world-class service and support necessary to deploy, operate, and optimize service provider networks. Whether the goal is speed to market, maximizing network availability, or enhancing customer satisfaction and retention, Cisco is committed to the success of its service provider customers.

For More Information

For more information about Cisco service and support programs and benefits, go to:

http://www.cisco.com/en/US/support/index.html

For more information about the Cisco 12000 Series, visit Cisco at:

http://www.cisco.com/go/12000 or contact your account representative today.


From 12.0.22S; older releases support frame sizes of up to 2450 bytes.