Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario descargar pdf (Pagina 14)

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Cisco Catalyst 6500 Series Virtual Switching System Hardware Deployment Recommendations

You can deploy Cisco Virtual Switching System in your network in numerous ways. In order to maximize system

availability and capacity, note the following recommendations with their associated benefits and caveats.

Two-Port VSL Using Supervisor-Engine Uplinks

In this scenario, the two members of the Cisco Virtual Switching System are connected through a 2-port VSL bundle.

Figure 7 shows the VSL being forme

d out of the two 10 Gigabit Ethernet uplink ports on the Supervisor Engine 720-10G VSS.

Figure 7. VSL Formed Out of Two 10 Gigabit Ethernet Uplink Ports

This deployment scenario is the minimum recommended configuration and allows for a redundant VSL interface

connection without requiring additional hardware modules. However, if a VSL module fails (in this case, the VSL

module is also the supervisor engine), the VSL as well as the chassis associated with the failed supervisor engine will

stop operating. Note that this scenario does not allow for future scaling of VSL bandwidth because no extra VSL -

capable 10 Gigabit Ethernet interfaces are available. See the Failure Scenarios section of this document for a

description of the outage associated with a single chassis failure.

Two-Port VSL Using Quad-Sup Uplink Forwarding

This deployment scenario is supported beginning in the 12.2(33)SXI4 software release using the Quad-Sup Uplink

Forwarding capability. (See Figure 8.)

Figure 8.

In this configuration the In-chassis Standby supervisors are fully operational and can used to form the VSL or as

uplinks to other devices. Also the In-chassis Standby is capable of assuming the In-chassis Active role in the event

the In-chassis Active should fail. Therefore it is important that VSL is built using interfaces from more than a single

Supervisor engine. In this case the VSL is built using the ten gigabit interfaces from both supervisor engines. More

details on the Quad-Sup Uplink Forwarding feature are provided in the High Availability section of this paper.

Two-Port VSL Using Line Cards Only

Figure 9 shows the two members of the Cisco Virtual Switching System connected through a 2-port VSL bundle, but

takes full advantage of line cards instead of the supervisor-engine uplinks.

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Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario Pagina 14