Cisco 40-Gigabit and 100-Gigabit CFP Transceiver Modules Instrukcja Użytkownika Pobierz pdf (Strona 4)

Features and Benefits

Table 1 summarizes the primary features and benefits of the Cisco Catalyst 6900 Series 4-Port 40 Gigabit

Ethernet Fiber Module.

Table 1. 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

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IPv6 in IPv4 tunneling (Intra-Site Automatic Tunnel Addressing Protocol [ISATAP], 6to4, GRE)

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Quality-of-service (QoS) support for uniform, short pipe, and pipe mode tunnel

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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

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Receive: 1p7q4t/2p6q4t

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Transmit: 1p7q4t/2p6q4t

Queuing mechanisms

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Class-of-service (CoS)-based queue mapping

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Differentiated Service Code Point (DSCP)-based queue mapping

Scheduler

●

Deficit Weighted Round Robin (DWRR)

●

Weighted Random Early Detection (WRED)

Port buffers

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Port Group 1& 2 has combined Ingress packet buffer of 10 MB same as the Port Group 3 & 4

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Port Group 1 & 2 has combined Egress packet buffer of 176 MB same as Port Group 3 & 4

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Distribution of packet buffers among the ports in Performance or Oversubscribed mode is explained in more

detail below

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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

1 2 3 4 5 6 7 8

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