1-6The master in a fabric collects the newest configurations of the user and the slaves periodicallysynchronize the configurations from the master. In this way, the entire fabric can operate with the sameconfigurations.DRRDistributed Redundancy Routing (DRR) is used to implement redundancy routing backup. The devicesin a fabric run their independent routing protocols and maintain their own routing tables. Unlike acommon layer 3 switch, a fabric member does not generate a layer 3 forwarding table to forwardpackets; instead, it uploads the routing table to the master, which generates a forwarding table used bythe entire fabric by integrating the routing tables of all the devices. Then each slave synchronizes thisforwarding table from the master and takes it as the basis for layer 3 forwarding.In this way, the forwarding table entries of each device in the fabric can be consistent. Even if the masterfails, other devices can use the forwarding table synchronized from the master to perform layer 3forwarding, thus ensuring the accuracy of forwarding path. After re-electing the master, the fabric willrestart routing update.DLAAs a new link aggregation mode, Distributed Link Aggregation (DLA) can improve fault tolerance andredundancy backup of user networks.Link aggregation enables you to configure ports on the same device as an aggregation port group,avoiding network interruptions resulted from single port failure. Based on link aggregation, DLAprovides a more reliable solution, with which you can select ports on different devices to form anaggregation port group. In this way, single port failure can be avoided and network reliability can begreatly improved, because the fabric can communicate with the destination network through ports onother devices in case a single device fails.IRF Fabric ConfigurationIRF Fabric Configuration Task ListComplete the following tasks to configure IRF fabric:Task RemarksSpecifying the Fabric Port of a Switch RequiredSetting a Unit ID for a Switch OptionalAssigning a Unit Name to a Switch OptionalAssigning an IRF Fabric Name to a Switch OptionalConfiguring IRF Automatic Fabric for a Switch OptionalSpecifying the Fabric Port of a SwitchFollow these steps to specify a fabric port:To do… Use the command… RemarksEnter system view system-view —
