Port Data Rate Monitoring Halted; Vlan Statistics Monitoring Halts Unified Issu Progress; Unexpected File Transfer Protocol Server Behavior During Unified Issu - Juniper SERVICE AVAILABILITY - CONFIGURATION GUIDE V 11.1.X Configuration Manual

Port Data Rate Monitoring Halted

The monitoring of Ethernet port data rate is halted during a unified in-service software
upgrade. Monitoring resumes immediately after the unified ISSU operation is
completed. The data rates reported by the show interface command are inaccurate
for the period of one configured load interval after unified ISSU is completed.

VLAN Statistics Monitoring Halts Unified ISSU Progress

A unified in-service software upgrade cannot proceed if VLAN statistics monitoring
is in progress.
Related Topics

Unexpected File Transfer Protocol Server Behavior During Unified ISSU

You can perform the unified ISSU operation even when the FTP server is enabled
on the router. However, no file transfer process, such as uploading or downloading
of files, creating of directories, or removing of files, can be in progress to enable the
unified ISSU operation to complete successfully.
When you issue the issu initialize command, unified ISSU checks for open FTP
connections or active file transfer sessions. At this stage, existing connections are
not terminated and new connections can also be established. When you issue the
issu start command, all FTP connections, including data and control connections,
are disconnected. Although the listening port is still available at this stage, any attempt
to create a new connection and incomplete file operations on existing connections
fail with an appropriate error message from the FTP server.
The issu start command is not executed if file transfer operations are in progress.
You must issue the ftp-server flush command to forcibly terminate the file transfer
process. When you are prompted to confirm, type y to confirm to close all active file
transfer jobs.
CAUTION: Because using the ftp-server flush command causes a forced and
ungraceful termination of all file transfer jobs that are in progress to start the unified
ISSU process, use it only when it is absolutely necessary. We recommend that you
wait for file transfer operations that are in progress to complete gracefully before
you perform unified ISSU, if your situation enables you to do so.
The following example shows the output of the show ftp-server command in a
scenario where FTP server is enabled, but no open file transfer connections exist.
host1#show ftp-server
FTP Server state: enabled, 0 open connections
Statistics since server was last started:
attempts: 3
Application Support for Unified ISSU on page 71

Unexpected File Transfer Protocol Server Behavior During Unified ISSU

Chapter 4: Configuring a Unified In-Service Software Upgrade
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