Release 4.0(1A)N1(1A) Upgrade And Downgrade Issues - Cisco AJ732A - MDS 9134 Fabric Switch Release Note

Release 4.0(1a)N1(1a) Upgrade and Downgrade Issues

S e n d d o c u m e n t a t i o n c o m m e n t s t o n e x u s 5 k d o c s @ c i s c o . c o m
The errdisable recovery cause pause-rate-limit Command
switch(config)# errdisable recovery cause ?
pause-rate-limit
switch(config)# [no] errdisable recovery cause pause-rate-limit
When an Ethernet port experiences severe congestion due to a large amount of flow control (pause)
frames received from the peer for an extended duration of time (10s), the port is placed in an error
disabled state. The errdisable recovery cause pause-rate-limit command enables an automatic
recovery of the port after a pre-defined interval of recovery time (if the port was error-disabled as a result
of the pause-rate-limiting function). By default, this recovery mechanism is not enabled.
The following command allows configuration of the timeout value for automatic recovery. The default
value is 300 seconds.
switch(config)# errdisable recovery interval ?
<30-65535>
Kickstart Break Sequence
Press the Ctrl-] key sequence from the console port session when the switch begins the Cisco NX-OS
software boot sequence to enter the boot prompt mode.
Ctrl-]
switch(boot)#
Release 4.0(1a)N1(1a) Upgrade and Downgrade Issues
This section describes issues that you may encounter when you upgrade or downgrade the Cisco NX-OS
software release on the Cisco Nexus 5000 Series switch. It provides examples of configuration syntax
differences for some of these changes.
Upgrade and downgrade is supported between the following versions of the Cisco NX-OS software on
the Cisco Nexus 5000 Series switches:
•
•
•
Upgrade and downgrade is not supported between the following versions of the Cisco NX-OS software
on the Cisco Nexus 5000 Series switches:
•
•
All the documented behavior for upgrade and downgrade between 4.0(0)N1 based releases and
4.0(1a)N1(1) also applies to upgrade and downgrade between 4.0(0)N1 based releases and
4.0(1a)N1(1a).
The following upgrade and downgrade issues occur as a result of CSCsy37432, CSCsy53275,
CSCsy09062, CSCsy08516 (For details see,
page 18
Cisco Nexus 5000 Series Release Notes, Release 4.0(1a)N1(1a)
4
Enable timer to recover from pause rate limit error
disabled state
Timer-interval (sec)
4.0(0)N1(2a)
4.0(1a)N1(1)
4.0(1a)N1(1a)
4.0(1a)N1(1a)
4.0(1a)N2(1)
and Resolved Caveats—Cisco NX-OS Release 4.0(1a)N1(1), page
Resolved Caveats—Cisco NX-OS Release 4.0(1a)N1(1a),
19):
OL-16601-01