Dell PowerEdge M1000e Configuration Manual

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Dell PowerEdge M1000e Configuration Manual Manual pdf 19 page image

Configuration Guide 17CMC Daisy Chaining (Enclosure Stacking)CMC daisy chaining can be utilized to minimize the number of networkconnections required for chassis (enclosure) management, such that only oneor two network connections (depending on whether or not redundant CMCsare installled) are needed for up to four M1000e enclosures.Cabling GuidelinesFollow these guidelines to daisy chain CMC modules from enclosure toenclosure:• CMC Ethernet port "GB1" is the "Uplink" port. It will uplink to either themanagement network, or to receive a cable from the CMC Ethernet portlabeled "STK" in the adjacent enclosure.The CMC Ethernet port labeled "STK" is the "daisy-chain" port. It willonly connect to CMC port GB1 on the adjacent enclosure. Do not connectthis cable directly to the management network.• Up to 4 enclosures can be daisy-chained.• Enclosures can be daisy-chained in both redundant and non-redundantdeployments:– In a redundant CMC deployment, cable all CMC modules in the CMCprimary slots together. Cable all CMC modules in the CMC secondaryslots together. Do not connect the primary daisy chain with thesecondary daisy chain (do not “cross cable” the two sets of CMCs).– In a non-redundant CMC, cable all CMC modules in the CMCprimary slots together.Figure 1-10 shows four enclosures with redundant CMC modules installed.Primary CMC port GB1 in the first enclosure connects to the managementnetwork. Primary CMC port GB1 in the adjacent enclosure is "uplinked” intothe port labeled "STK" on the primary CMC in the enclosure above it. Nocable is required in port STK on the fourth enclosure in line. The samecabling scheme is valid for the daisy chain of CMC modules in the secondaryslot of the enclosures.