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VDC_MGR-2-VDC_BAD: vdc_mgr: There has been a failure at res_mgr

Error Message: VDC_MGR-2-VDC_BAD: vdc_mgr: There has been a failure at res_mgr Explanation: You cannot create a VDC because not enough resources are available based on the template configuration. If no template is used, a default template is applied. Reco…

Cannot activate zoneset and cannot configure zoning in enhanced zoning mode

The zone set cannot be activated and zoning cannot be configured in enhanced zoning mode. The error message “Zoning database update in progress, command rejected” might be received. Possible Cause Another user on the same switch or on a different swit…

Switch Profiles in Nexus 5000

Information About Switch Profiles Several applications require consistent configuration across Cisco Nexus 5000 Series switches in the network. For example, with a Virtual Port Channel (vPC), you must have identical configurations. Mismatched configuratio…

Complaint about coverage of WLAN in Specific Area

This blog explains steps to troubleshoot issues about coverage of WLAN in specific area. Below information must be gathered from the requester of the incident. How many users are affected? Signal strength in user’s area. When the problem has started? Wa…

AP Installation Procedure

This blog explains the procedure and requirements to install a new AP in new coverage area. Site survey must be done prior AP installation to find the suitable locations for the APs. Approximate user density (Keeping future strength in mind) in the area m…

%SYS-4-CHUNKSIBLINGSEXCEED: Number of siblings in a chunk has gone above the thr

Issue : %SYS-4-CHUNKSIBLINGSEXCEED: Number of siblings in a chunk has gone above Cause : This is due to leaking within Crypto Request chunk. and to a commonly hit bug which can be viewed using by bug toolkit on CCO: CSCtw80533 Memory leak due to crypto_al…

Link pause (flow control) not enabled on back to back Nexus 5000 switch links

When link pause (flow control) is not enabled on back-to-back Nexus 5000 switch links, packets are dropped while sending traffic on a no-drop class. ======================================================================================================= Po…

Traffic not queued or prioritized correctly on Nexus 2148, Nexus 2232, and Nexus 2248

After configuring all three types of policy maps (QoS, Network-QoS, and Queuing), the traffic is not queued or prioritized correctly on Nexus 2148, Nexus 2232, and Nexus 2248 switches. =================================================== Possible Cause The…

MTU for “class-default” value is 1500 when jumbo MTU configured

When the configuration for the network-qos policy-map sets the class-default to jumbo MTU, the show queuing interface command indicates that the MTU for class-default is 1500. ===================================================================== Possible …

Cannot pass frame size larger than 2300 bytes through switch

Although the jumbo MTU has been configured for class-default, you cannot pass a frame size larger than 2300 bytes through the Nexus 5000 switch and the Nexus 2000 FEX. ============================================================ Possible Cause The CoS val…