After upgrading a pair of Nexus-6k from 6.x code to 7.3(5)1 I’ve noticed a strange behavior where OSPF adjacency from Cisco ASA to Nexus was not forming over vPC peer link. All was working fine on 6.x code. Took a bit to figure it out and this article helped to …
Tag: Troubleshooting
Recently upgraded from ISE 2.3 to ISE version 2.4 patch 9 and ended up with evaluation licenses on secondary PAN. Not sure why production licenses did not make during the upgrade to secondary PAN but when the upgrade was completed successfully production licenses including device admin license were back. I …
I was trying to update HTTPs certificate on FirePOWER Management Center (FMC) and ran into issues doing it on GUI and CLI. Before making any changes backup default certificate and key from /etc/ssl location The error I got was Error – Basic constraints are not critical or not defined. There …
One day received fan speed is running high alert: Warning Hardware Alarms:1 xx 08:21:04 FAN1_TACH2 fan speed is running high Run Events Graph Suspected high temperature but was not sure how to check it without running troubleshooting bundle. Here is a quick command to check temperature and other useful parameters …
After migration from Catalyst 3750-X to 9300 switch all of a sudden OSPF adjacency to ASA was not establishing. Since configuration did not change I started debugging it. Switch side was stuck in “INIT/DROTHER” state. ASA side had no neighbors. “Show OSPF” indicated that Area BACKBONE(0) was (Inactive). The interface …