Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 374
Fabric-Level Traffic Isolation in a backbone fabric, For the FX8-24 blades only
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Traffic Isolation Zoning ∙ A TI zone defined within the backbone fabric does not guarantee that edge fabric traffic will arrive at a particular EX_Port. You must set up a TI zone in the edge fabric to guarantee this. ∙ TI zones within the backbone fabric cannot contain more than one destination router port (DRP) per each fabric. This means you cannot define more than one EX_Port to any one edge fabric unless they are part of a trunk. ∙ Only one egress E_Port or VE_Port connected to the next hop can be defined within TI zones. Only one ISL or trunk can be defined between two backbone switches. The E_Port in the backbone fabric TI zone should be the least cost ISL. ∙ TI over FCR is supported only from edge fabric to edge fabric. Traffic isolation from backbone to edge is not supported. ∙ Non-TI data traffic is not restricted from going through the TI path in the backbone fabric. ∙ For TI over FCR, failover must be enabled in the TI zones in the edge fabrics and in the backbone fabric. ∙ TI over FCR is not supported with FC Fast Write. ∙ ETIZ over FCR is not supported. ∙ Configuring backbone TI zone with remote FC router EX_Port is not supported if local chassis has the EX_Port to source and destination edge fabric in the same chip/port group. ∙ For the FX8-24 blades only: If Virtual Fabrics is disabled, two or more shared area EX_Ports connected to the same edge fabric should not be configured in different TI zones. This configuration is not supported. Fabric-Level Traffic Isolation in a backbone fabric For Fibre Channel Routed (FCR) environments, you can use TI zoning if you want traffic isolation only at the fabric level and not at the device level. For example, two fabrics within a MetaSAN need to communicate only with each other. There is no other traffic across the backbone that goes from either of these edge fabrics to any other edge fabric in the MetaSAN. In this case, all of the traffic entering the FCR backbone from one of these edge fabrics will go to the other edge fabric. If these two edge fabrics are connected to two different backbone switches (FC routers), then traffic between these fabrics can be isolated to a specified set of links within the backbone fabric using one of two methods: ∙ TI over FCR, which includes the PWWN of devices and maintains device level isolation ∙ TI zoning in the backbone, which provides fabric level isolation If device-level isolation is needed from one edge fabric to another, then use TI over FCR using Port World Wide Names (PWWNs). However, if there is no need for device-level isolation, but a need for fabric-level isolation, then use Fabric-Level Traffic Isolation, described in this section. TI over FCR is described in Traffic Isolation Zoning over FC routers on page 370. If two edge fabrics are connected to two different backbone switches, then traffic between these fabrics can be isolated to a specified set of links within the backbone fabric using TI zoning in the backbone without including device PWWNs. This is called Fabric-Level Traffic Isolation, as shown in the following figure. Brocade Fabric OS Administration Guide, 8.0.1 374 53-1004111-02
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