Dell Networking S6000 System Manual de usuario descargar pdf (Pagina 18)

18 Network Virtualization with Dell Infrastructure and VMware NSX | Version 1.2

SAN traffic, and each CNA port per server is connected to a different ToR/access switch as shown

in Figure 10 above.

 Dell EqualLogic PS6210 array is used and is DCB enabled for use with iSCSI. It has 2 controllers

with 2 x 10 GbE copper and fiber ports (either the 2 x copper or the 2 x fiber ports can be utilized

but not both).

 A 40 GbE to 4 x 10 GbE breakout cable is utilized to connect the S6000 to the Dell EqualLogic

storage array; unused 10 GbE ports can be utilized for additional EqualLogic storage arrays (only

one EqualLogic array is shown above in Figure 10).

 The Dell EqualLogic array controllers are active/standby with vertical failover employed, meaning

that corresponding physical ports in each controller (vertical pairs) are combined into a single

logical port from the point of view of the active controller. This allows for continuous full

bandwidth to the array even if there is a link or switch failure.

 Utilizing DCB and having the Dell EqualLogic array connected centrally to the core allows for ease

of scale while providing remote storage access to all blade and rack servers. Additional arrays can

easily be connected to the Dell S6000 switches.

 Proxy ARP on Virtual Link Trunking (VLT) peer nodes or VRRP can be used to provide high

availability for infrastructure VLAN gateways on the L2/L3 boundary on the S6000s.

VRRP provides a virtual IP that can be used by two switches for redundancy purposes. One switch

will be active in responding to ARP requests for the virtual IP while the other switch will be

standby.

A proxy ARP-enabled L3 switch/router answers the ARP requests that are destined for another L3

switch/router. The local host forwards the traffic to the proxy ARP-enabled device, which in turn

transmits the packets to the destination.

VLT is Dell’s L2 multi-pathing technology which allows for active-active connectivity from one host/switch

to two different switches. In this network design, it is utilized on the Dell S6000 core switches down to the

Dell MXL switches and ToR Dell S4810 switches. VLT is not used on the Dell MXL or S4810 switches to

connect to any vSphere ESXi hosts. Active-Active connectivity is achieved from the vSphere ESXi server to

the access/ToR switches via VMware vSphere’s teaming options. VLT is only used on the ToR S4810s for

connecting to the non-virtualized Dell PowerEdge R720 server running Windows Server 2008 Enterprise

with local storage.

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Dell Networking S6000 System Manual de usuario Pagina 18