Deployment Guide

Fabric State Changes |Out of operating range |No Errors |

Switch Resource |In operating range |Out of operating range |

Traffic Performance |In operating range |In operating range |

FCIP Health |Not applicable |Not applicable |

Fabric Performance Impact|In operating range |In operating range |

3.2 Rules Affecting Health:

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Fabric State Changes(2)|1 |LSan_Dev_Count|08/21/02 00:30:6|Port 23|12 % |

|1 |L2_Dev_Count |08/21/13 01:04:6|Port 23|12 % |

For more detailed information on scalability limits, refer to Brocade SAN Scalability Guidelines: Brocade

Fabric OS v7.X.

Layer 2 fabric device connection monitoring

A pure Layer 2 (L2) fabric is a collection of Fibre Channel switches and devices and switches that

doesn’t participate in a metaSAN. In such a fabric, rules for device counts are calculated as a

percentage of the total number of devices. For example, an L2 fabric with 5500 devices logged in is

using 92 percent of the maximum limit of 6000 devices for a L2 fabric. So if user have configured a rule

to trigger an alert at 90 percent or greater, then MAPS triggers the action configured for that rule and

sends the data to the dashboard.

Imported LSAN device connection monitoring in a metaSAN

The collection of all devices, switches, edge and Backbone fabrics, LSANs, and routers that make up a

physically connected but logically partitioned storage network is called a metaSAN. Using MAPS, the

total number of LSAN device connections (including the total number of devices imported from all edge

fabrics) in a metaSAN can be monitored for a scalability limit.

NOTE

MAPS rules for monitoring imported LSAN device connections in a metaSAN can be configured only on

switches that are a part of the Backbone fabric.

Device counts in this framework are calculated as a percentage of the total number of LSAN devices in

a metaSAN (including imported devices from all edge fabric). For example: if a fabric has four switches

in the Backbone fabric and four switches each in four edge fabrics, the total number of LSAN devices in

this metaSAN (including imported devices from all edge fabrics) is 1200. Given a maximum of 10000

devices, this is 12 percent. If you have configured a rule to trigger at 10 percent or greater, then MAPS

triggers the action configured for the rule, but only on those switches that are part of the Backbone

fabric, and caches the data in the dashboard.

Backbone fabric Fibre Channel router count monitoring

In a Backbone fabric, there can be maximum number of 12 Fibre Channel routers (FCRs). MAPS rules

can be configured to monitor the number of Fibre Channel routers in the Backbone fabric as an

absolute value. If the number of Fibre Channel routers reaches the configured threshold, MAPS triggers

the action configured for the rule and caches the data in the dashboard. Refer to Default rules for

scalability limit monitoring on page 91 for these values.

Layer 2 fabric device connection monitoring

Monitoring and Alerting Policy Suite Administrator's Guide 89

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