NX5000(config-if-range)# channel-group 100 mode on NX5000(config)# interface port-channel 100
The output of this command provides details as to the software versions, operational configuration, uplink status, and much more
show fex Displays a list of fabric extension (FEX) units, their description, state,.Use the following commands to verify the fabric extension: NX5000(config-if)# switchport mode fex-fabric (One to four uplinks are supported in this configuration)Ĭreate the fex configuration: NX5000(config)# fex 100Ĭhange in Max-links will cause traffic disruptionĪssociate the 2 x eth uplinks to fex 100: NX5000(config)# interface ethernet 1/17 The drawback of static pinning is that if uplinks are added or removed, the host ports are bounced to repin the hosts across the uplinks. Static pinning is a good option in which tight control over the bandwidth and oversubscription is preferable. For example, if one uplink is active, all front-panel ports are mapped. The pinning is based on the number of uplinks available. This configuration creates a direct relationship between front-panel ports and their uplinks. The Nexus 2000 can be connected to the 5000 or 7000 in one of two distinct modes:īasic example of Static Pinning between the Nexus parent and the FEX The Nexus 2000 does not perform any local switching functions, and all traffic is switched in a centralized fashion by the parent switch This functionality enables data center engineers to gain the cabling benefits of an in-rack switching solution, with the simplicity of management of a centralized or end of row topology. Although physically separate, the Nexus parent switch and 2000 are managed as a single entity from a software image, configuration, and spanning tree perspective. To continue this analogy, the Nexus parent switch operates as a supervisor module for the virtual chassis. Without being constrained to a physical chassis as is the case with most modular switch The Nexus 2000 operates as a linecard for the Nexus parent switch, The Nexus 50 offer a unique capability by combining with the Nexus 2000įabric Extenders.
The Nexus 5000 series of switches uses the cut-through switching method, except when dissimilar transmission speeds exist between the ingress and egress ports.įabric Extension via the Nexus 2000 Nexus 2000 As application-specific integrated circuit (ASIC) process technology matured, cut-through switches gained the capability to look further into the frame without the performance penalty associated with store-and-forward switches The Nexus 7000 series of switches implements store-and-forward switching.Īlthough store-and-forward switches wait for the entire frame to be received into a buffer, cut-through switches can perform the L2 lookup as soon as the DMAC is received in the first 6 bytes of the frame. If the frame is determined to be corrupt, it is immediately dropped.
Store-and-forward switching waits until the entire frame has been received and then compares the last portion of the frame against the frame check sequence (FCS) to ensure that no errors have been introduced during physical transmission.