Intelligent CIO APAC Issue 25 - Page 76

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Lisa Schwartz , Director of Business
Development and Product Marketing at AEM
switch detail including slot / port / VLAN to understand connection path should be considered a requirement .
Can you outline a few common usecases that show common types of cable and network challenges that data center administrators face – as well as what tools / techniques can be used to solve them ?
Use-case 1 : A PoE device is not functioning properly
End of Row ( EOR ) layout addresses some of the cabling overload issues by placing switches at the end of each row , reducing the amount of centralized cabling , but congestion can still occur at the network rack depending on the size of the row . Proliferation of IoT devices can compound the cabling congestion . Testing capability beyond physical layer certification is a must .
Top of Rack ( ToR ) layout , while being the most modern , is not without challenges . Many more switches are required , which adds complexity and cost . Problems can arise if a ToR switch becomes full and a NetOps admin connects a server to a switch in an adjacent rack in the interest of saving time instead of expanding the port capacity on the rack , leading to cabling having to be manually traced to determine to which switch a server is connected . The ability to get quick
Being able to perform a PoE load test at the endpoint where the device connects can confirm if power is adequate when under load . The test equipment demands the power from the PSE , if power is insufficient at the endpoint , then the same test can be performed directly into the switch port to determine if that is the culprit . The test can be useful in determining if a switch port is the issue , the cabling is the issue or even if a low-quality patch cord inadvertently connected in the channel is an issue . Being able to also measure data center resistance and resistance unbalance , in addition to a PoE load test , can be useful in this situation .
Use-case 2 : A user cannot connect to a resource or to the Internet
Having test equipment which can analyze the switch connection to determine if the link is connected to the correct switch , port and VLAN can be used to find issues which crop up , for example , when a server in a Top of Rack layout has been incorrectly connected to a
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