Installation guide

50
Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(6)
OL-27554-01
Caveats
This issue is extremely rare. The conditions for this issue may be created after a nondisruptive
upgrade to Cisco NX-OS Release 5.2(x). However, service disruption might not appear immediately
on the affected PortChannel. The next time one or more members of the PortChannel flap, traffic
loss could occur.
To verify if you have the potential to experience this issue, enter the commands shown in the
following examples:
switch# show port-channel internal info interface port-channel 3
port-channel 3
channel : 3 <<< channel_id
bundle : 10 <<< normally, bundle_id = channel_id - 1
ifindex : 0x4000002
pcport mode : 67108866
admin mode : on
oper mode : on
[...]
switch # show system internal fcfwd pcmap
port-channel 3:
IfIndex is 0x04000002 <<< last 3 nibbles
Bundle-Index is 0x0000000a <<< last 3 nibbles are not equal
[...]
Regardless of the last three nibbles of the preceding indexes, this issue has been hit if the following
output contains “pcm_reserv_bundle_id:Conflict,rsv a new one...”
switch# show port-channel internal event-history port-channel 1
29) Event: E_DEBUG at 487974 usecs after Thu Mar 22 19:44:26 2012
pcm_reserve_bundle_id:Conflict,rsv a new one.req_bundle=0x0,resp_bundle=0x1
Workaround: This issue is resolved.
• CSCtz04489
Symptom: Cisco IOA issues the following messages:
%LIBBASE_SVC-5-IT_NEXUS_FAILURE: IT-NEXUS (iwwn, twwn). IT-NEXUS on ioa4/1
vi-vt (viwwn, vtwwn) bind failure. Reason: : 0x46
%LIBBASE_SVC-5-IT_NEXUS_FAILURE: IT-NEXUS (iwwn, twwn). IT-NEXUS on ioa2/1
vi-vt (viwwn, vtwwn) bind failure. Reason: : 0x26
The reason text is not provided and the reason codes of 0x46 and 0x26 are not defined.
Workaround: This issue is resolved.
• CSCtz13890
Symptom: The size of the bootflash on a Cisco MDS 9222i switch might be smaller than expected.
The bootflash should be around 650 MB, but on some Cisco MDS 9222i switches the bootflash size
is 325 MB.
Workaround: This issue is resolved.
• CSCtz15659
Symptom: An ISSU upgrade fails with a core file for an FC Redirect process.
switch# show cores
Module-num Instance-num Process-name PID Core-create-time
---------- ------------ ------------ --- ----------------
8 1 fc-redirect 3097 Apr 4 12:59