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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…

Licensing Installation Issues

Error Message: LICMGR-3-LOG_LIC_INVALID_HOSTID: Explanation: The feature has a license with an invalid license Host ID. This can happen if a supervisor module with licensed features for one system is installed on another system. Recommended Action: Reinst…

Unable to configure vPC

In this blog you will see the solution when you are configuring the VPC , the Nexus not allow to configure the vPC. Some of the possible cause has been discussed here : Possible Cause vPC is not enabled or is not supported in the NX-OS release of software…

intermittent network connection BGP/ Eigrp Routes issue.

Issue: intermittent network connection BGP/ Eigrp Routes issue. Temporary solution: – Both switches need to be rebooted each time issue occurred. Affected IOS used on both switch was: cat4500e-entservicesk9-mz.122-53.SG.bin Fixes :- BUG: CSCsy92331 …

VPN connectivity between dr-vpn01 and R01-VPN05 “EIGRP” is flapping

VPN connectivity between dr-vpn01 and R01-VPN05 “EIGRP” is flapping Solution : dr-vpn01(config)#interface GigabitEthernet0/0 dr-vpn01(config-if)#no crypto map MAP-TO-FO dr-vpn01(config-if)# crypto map MAP-TO-FO dr-vpn01#sh ip ei nei EIGRP-IPv4…