Administrator Guide

When ever the controlling bridge (CB) is upgraded to a new version of Dell Networking OS, the CB reloads and boots up with
the new version of the Dell Networking OS. The CB checks for the version compatibility of the checked-in PEs; incase the CB
detects a version mismatch, it automatically upgrades the PEs to the version that the CB is currently using. This behavior may
cause traffic disruptions in case a large number of PEs are found to have a version mismatch. To mitigate this issue, certain
versions of Dell Networking OS images that PEs run are marked as Software Version Compatible (SVC). When PEs with state
SVC are checked into the CB, these PEs remain functionally online even though there is a software version mismatch with the
latest version of the CB. Also, the CB does not trigger an auto-sync of the PEs with the SVC state. However, when the CB
reboots after upgrading to the latest version, the system displays a warning message indicating that PEs with a version
mismatch are checked into the CB.
NOTE: PEs which are marked as SVC must be rebooted or upgraded as early as possible or in the scheduled maintenance
time window.
To schedule PE reboots, perform the following steps:
1. Enable the scheduled PE reboot feature using the following command:
pe-version-compat-support enable
2. Schedule a reboot or upgrade of the PEs with the state SVC but has a mismatched version with CB using the following
command:
reset pe schedule at 0:10-12/29/2017 range 1,3,5-10 no-confirm
This command resets all the PEs with pe-ids in range 5 to 10 and pe-ids 1 and 3 at 0:10 AM on 29th Dec, 2017.
3. View the list of PEs that are scheduled to be rebooted at a later point in time using the following command:
reset pe schedule show
The system displays information on the PEs that are scheduled to be rebooted.
NOTE: The following commands are available only on the primary VLT peer: reset pe schedule, reset pe
unschedule, and reset pe schedule show.
JobID Status Scheduled Start Time Scheduled PE's
000 Scheduled 08:59-09/19/17 0,1
001 Scheduled 23:30-09/19/17 2,3
002 Scheduled 20:30-12/29/17 5-6
Troubleshooting a Port Extender
Normally you manage a PE through the C9010 console attached to the parent C9010 switch. However, if a port extender cannot
connect to the C9010, use the following commands from a PE console to troubleshoot the error condition.
cd Change current directory
clear Reset functions
copy Copy from one file to another
delete Delete a file
diag Run diagnosis
dir List files on a filesystem
disable Turn off privileged commands
enable Turn on privileged commands
exit Exit from the EXEC
format Format a filesystem
hostname Set system's network name
no Reset a command
offline Take a PE stack unit offline
online Bring a PE stack unit online
power-cycle Power-cycle the unit(s)
pwd Display current working directory
reload PE Halt and perform a cold restart
rename Rename a file
reset Reset selected PE
show PE Show running system information
telnet-peer-stack-unit Open a telnet connection to the peer stack-unit
upgrade Upgrade subcommands
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Port Extenders (PEs)