[JunOS/Juniper EX2200] mgd: unable to execute /usr/sbin/ffp: Bad file descriptor

When setting up a used EX2200 switch we encountered the following error when performing a commit check: {master:0}[edit] root# commit check mgd: unable to execute /usr/sbin/ffp: Bad file descriptor mgd: unable to execute /usr/sbin/ffp: Bad file descriptor error: foreign file propagation (ffp) failed We checked the file system and those binary didn’t exist so we’re […]

[CentOS 6.7/Areca RAID] Kernel Update results in Pid: 1, comm: init Not tainted

When performing a “yum update” on a CentOS 6.5 server to bring it up to CentOS 6.7 the Areca RAID driver wasn’t compiled in the ramdisk for the kernel (or installed for the kernel) even after installing kmod-arcmsr-1.30.0X.20_rhel6.7-1.x86_64.rpm resulting in the following error: Kernel panic – not syncing: Attempted to kill init! Pid: 1, comm: […]

[JunOS/Cisco IOS] Setting up an EtherChannel between Juniper and Cisco devices

Cisco devices by default use PAgP (Port Aggregation Protocol) when establishing EtherChannel connections between devices.  PAgP is a proprietary protocol that is exclusive to Cisco systems.  LACP is a protocol that accomplishes the same thing but is universal and thus available on Juniper devices.  Here’s how to set them up. Cisco side.  Here’s the configuration […]

[CentOS 7.1] dracut-initqueue[314]: Warning: /dev/centos/swap does not exist

THE RESOLUTION OF THIS PROBLEM IN THIS POST IS DIRECTLY RELATED TO SYSTEMS RUNNING ARECA RAID CONTROLLERS BUT MAY APPLY TO OTHER SYSTEMS REQUIRING DISK RELATED DRIVERS. Upon booting a server after a CentOS kernel upgrade it was no longer able to boot.  The update was specifically from kernel 3.10.0-123.el7.x86_64 to 3.10.0-229.11.1.el7.x86_64 but these details have nothing […]