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WS-X6904-40G

  • ModelWS-X6904-40G
  • MakerCISCO
  • DescriptionCisco® Catalyst® 6500 Series Switches offer a variety of Ethernet modules to serve different needs in the campus and data center for enterprise, commercial, and service provider customers. The Cisco Catalyst 6904 4-Port 40 Gigabit Ethernet Fiber Module (Figure 1), fully compliant with the IEEE 802.3ba standard, complements this product portfolio.
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Data Sheet

Cisco Catalyst 6900 Series 4-Port 40 Gigabit Ethernet Fiber Module Primary Features

Feature

Description

Ports

4 x 40 Gigabit Ethernet/16 x 10 Gigabit Ethernet

Optics

CFP-40G-LR4, 40G-CFP-SR4

FourX converter for 10 Gigabit Ethernet SFP+

Switch fabric connection

80 Gbps full duplex

Oversubscription

2:1 in Oversubscription mode 1:1 in Performance mode

Forwarding engine
●  WS-X6904-40G-2T: Comes equipped with DFC4-E for distributed forwarding, supporting 256K forwarding entries, increased ACL entries to 64 K, increased Cisco IOS® NetFlow entries to 512K, and increased IPv4 forwarding speed to 60 mpps
●  WS-X6904-40G-2TXL: Equipped with DFC4-EXL for distributed forwarding, supporting 1 million forwarding entries, increased ACL entries to 256K, increased NetFlow entries to 1 million, and increased IPv4 forwarding speed to 60 mpps
●  In addition to the increased NetFlow entries, supports in hardware Flexible NetFlow, Sampled NetFlow, and Egress NetFlow
●  Increased performance of up to 60 mpps for Layer 2, IPv4 and Multiprotocol Label Switching (MPLS) forwarding, and up to 30 mpps for Generic Routing Encapsulation (GRE), IPv6, and VPLS forwarding
●  Increased multicast routes to 256K (128K IPv4 + 128K IPv6)
●  Support for 16K bridge domains, allowing the standard 4K VLANs to be reused across these bridge domains, effectively increasing the number of VLANs available in the system
●  Increased MAC address table to 128K
●  IPv4 Internet Group Management Protocol Version 3 (IGMPv3) snooping in hardware
●  IPv6 Multicast Listener Discovery Version 2 (MLDv2) snooping in hardware
●  Protocol Independent Multicast (PIM) registers in hardware
●  IPV4 and IPv6 in IPv6 tunneling
●  IPv6 in IPv4 tunneling (Intra-Site Automatic Tunnel Addressing Protocol [ISATAP], 6to4, GRE)
●  Quality-of-service (QoS) support for uniform, short pipe, and pipe mode tunnel
●  Terminate the tunnel in the same loopback

Security
●  Layer 2 and Layer 3 Cisco TrustSec (Security Group Tagging & Security Group Access Control List) and IEEE 802.1ae (MACsec) Layer 2 encryption in hardware

Queues
●  Receive: 1p7q4t/2p6q4t
●  Transmit: 1p7q4t/2p6q4t

Queuing mechanisms
●  Class-of-service (CoS)-based queue mapping
●  Differentiated Service Code Point (DSCP)-based queue mapping

Scheduler
●  Deficit Weighted Round Robin (DWRR)
●  Weighted Random Early Detection (WRED)

Port buffers
●  Port Group 1& 2 has combined Ingress packet buffer of 10 MB same as the Port Group 3 & 4
●  Port Group 1 & 2 has combined Egress packet buffer of 176 MB same as Port Group 3 & 4
●  Distribution of packet buffers among the ports in Performance or Oversubscribed mode is explained in more detail below
●  Ingress buffer for Port Group (1&2) or Port Group (3&4):
◦   In Performance mode 1ms of storage = 10 MB or 10 MB/4 for each of the 4 x 10 Gigabit Ethernet
◦   In Oversubscribed mode = 10MB/2 for each of the 2 x 40GE ports and/or (10MB/4)/2) for each of the 8 x 10GE
●  Egress buffer for Port Group (1&2) or Port Group (3&4):
◦   In Performance mode, 10 ms of storage equals 176 MB or 176 MB/4 for each of the 4 x 10 Gigabit Ethernet
◦   In Oversubscribed mode equals 176 MB/2 for each of 2 x 40 Gigabit Ethernet ports and/or (176/4)/2) for each of 8 x 10 Gigabit Ethernet

Hardware-based multicast replication
●  Ingress and Egress mode
●  Approximately 20 Gbps per replication engine
●  Four replication engines per module delivering total throughput of 80 Gbps

Jumbo frame support for bridged and routed packets

Up to 9216 bytes

+ LED

New Blue Beacon LED added on front panel for slot-level and port-level service flashing indicator

EtherChannel Capacity

40 Gigabit Ethernet mode

●  A maximum of 4 x 40 Gigabit Ethernet links, whether on one module or spread across multiple modules, is allowed in a single EtherChannel.
●  This does not affect other modules in the system.
●  10 Gigabit Ethernet mode
●  Up to eight 10 Gigabit Ethernet ports can be used in an EtherChannel, whether on one module or spread across multiple modules.

Best Practices

●  EtherChannel should be two or four ports (or eight, with 10 Gigabit Ethernet ports)

Maximum port density per chassis

32 x 40 Gigabit Ethernet ports or 128 (+2 Supervisor Uplink) 10 Gigabit Ethernet ports (6509-E chassis)

44 x 40 Gigabit Ethernet ports or 176 (+2 Supervisor Uplink) 10 Gigabit Ethernet ports (6513-E chassis)

Maximum port density per VSS

64 x 40 Gigabit Ethernet ports or 256 10 Gigabit Ethernet ports (6509-E chassis)

88 x 40 Gigabit Ethernet ports or 352 10 Gigabit Ethernet ports (6513-E chassis)

Can be used to form virtual switch link

Yes (on all ports). Maximum of 4 x 40 G ports (refer to EtherChannel capacity section above)

Supervisor engines supported

Cisco IOS Supervisor Engine 2T and 2TXL

Can you upgrade WS-x6904-40G-2T to XL version with DFC4XL?

Yes. WS-6904-40G-2T can be upgraded to a XL version by swapping out the DFC4 with DFC4XL

Chassis supported
●  Any Cisco Catalyst 6500 E-Series chassis, including 6503-E, 6504-E, 6506-E, 6509-E, 6509-V-E, 6513-E (NEBS compliant: operating temperature up to 55°C)
●  Not supported in non-E Series chassis

Slot requirements
●  Can occupy any slot in any Cisco Catalyst 6503-E, 6504-E, 6506-E, 6509-E, or 6509-V-E chassis
●  Can occupy slots 1-6 and 9-13 in a Cisco Catalyst 6513-E chassis

Onboard memory

2 GB default (no higher upgrade)

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