Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.112.0P1 - Page 1072
Buffer Tuning, Tuning
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OID String .1.3.6.1.4.1.6027.3.10.1.2.5.1.8 Temperature .1.3.6.1.4.1.6027.3.10.1.2.5.1.7 OID Name chSysPortXfpTxPower chSysPortXfpRecvTemp Hardware MIB Buffer Statistics .1.3.6.1.4.1.6027.3.27.1.4 .1.3.6.1.4.1.6027.3.27.1.5 .1.3.6.1.4.1.6027.3.27.1.6 Buffer Tuning dellNetFpPacketBufferTable dellNetFpStatsPerPortTable dellNetFpStatsPerCOSTable Description OID displays the transmitting power of the connected optics. OID displays the temperature of the connected optics. NOTE: These OIDs only generate if you enable the enable opticinfo-update-interval is enabled command. View the modular packet buffers details per stack unit and the mode of allocation. View the forwarding plane statistics containing the packet buffer usage per port per stack unit. View the forwarding plane statistics containing the packet buffer statistics per COS per port. Buffer Tuning allows you to modify the way your switch allocates buffers from its available memory and helps prevent packet drops during a temporary burst of traffic. Using a PreDefined Buffer Profile Dell Networking OS provides two predefined buffer profiles, one for single-queue (for example, non-quality-of-service [QoS]) applications, and one for four-queue (for example, QoS) applications. You must reload the system for the global buffer profile to take effect, a message similar to the following displays: % Info: For the global pre-defined buffer profile to take effect, please save the config and reload the system.. Dell Networking OS Behavior: After you configure buffer-profile global 1Q, the message displays during every bootup. Only one reboot is required for the configuration to take effect; afterward you may ignore this bootup message. Dell Networking OS Behavior: If you configure 1Q, save the running-config to the startup-config, and then delete the startupconfig and reload the chassis. The only way to return to the default buffer profile is to remove the 1Q profile configured and then reload the chassis. If you have already applied a custom buffer profile on an interface, the buffer-profile global command fails and a message similar to the following displays: % Error: User-defined buffer profile already applied. Failed to apply global pre-defined buffer profile. Please remove all user-defined buffer profiles. Similarly, when you configure buffer-profile global, you cannot not apply a buffer profile on any single interface. A message similar to the following displays: % Error: Global pre-defined buffer profile already applied. Failed to apply user-defined buffer profile on interface Te 1/1. Please remove global pre-defined buffer profile. To apply a predefined buffer profile, use the following command: • Apply one of the predefined buffer profiles for all port pipes in the system. 1072 Debugging and Diagnostics
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