Tag: Cisco
Cisco WLC – HA SSO upgrade
“Is the upgrade procedure for a high-availability pair of Cisco Wireless LAN Controllers the same as the procedure for a single Cisco WLC?” Several customers asked me this questions and the answer is YES. First you check the current and backup firmware image. (Cisco Controller) >show boot Primary Boot Image…………………………. 8.2.111.0 (default) (active) Backup Boot Image………………………….. … Read More
Cisco FMC – Dashboard Widgets
Some widgets on the dashboard don’t generate graphs after deploying a default configuration of Cisco FireSight Management Center. The first two widgets, Top Server Applications Seen and Top Operating Systems Seen, are generated after the configuration of a Network Discovery Profile. The configuration of the Network Discover Profile is done via Policies – Network Discovery – … Read More
Cisco ASA: multiple context and capture
Packet captures are very useful for troubleshooting purposes. The Cisco ASA supports packet captures even in multiple context mode. I normally configure packet captures on CLI level. This can be done by configuring an access-list to match the specific traffic you would like to capture. Add the access-list and the specific interface in a capture command. … Read More
Cisco IOS-XE 16.x
Cisco has release new IOS-XE software, called IOS-XE Denali 16.x. This software is available for Cisco ASR routers and Cisco Catalyst 3850/3650 switches. In the end IOS-XE Denali should be available for all switches. A good overview of Cisco Catalyst IOS XE Denali is explained in this Youtube video from Tech Field Day. Below you … Read More
Cisco WLC and pre-download software to AP
A simple post, because I always forget the CLI commands to TFTP the software to the controller. I also added the command to predownload the new firmware to all access-points. This dramatically speeds up the upgrade process of the access-points. You need to set the TFTP parameters first. (Cisco Controller) >transfer download datatype code (Cisco … Read More
Cisco cable-diagnostics with TDR
Some Cisco switches have a way to check the condition of copper cables. This can be done via de command test cable-diagnostics tdr. TDR stands for Time Domain Reflector. More information about Time Domain Reflector can be found at the Cisco Support Community. The command can be very useful for basic layer 1 troubleshooting. core01#test … Read More