By default, the Catalyst 3850 uses a tftp block size value of 512, which is the lowest possible value. The reasoning behind this default value is to ensure interoperability with legacy tftp servers.
For IOS-XE version 3.3.2 and below, you will have to manually change the block size in the global configuration to speed up the transfer process. The example below is a transfer comparison when using the default block size of 512K versus a transfer using the maximum block size value of 8192K.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...
I have created a Powershell script to automatically add a Wireless Guest
User on Cisco WLCs. (tested on 2500 Series) The script should be
completely self explanatory. Prerequisites: Powershell SNMP Module
(Install-Module -Name SNMP) SNMP Write Access to y...