Disabling Acl Adjacency Sharing For System Image Downgrade; Displaying Sfp Diagnostic Information - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 14 Configuring Generation 2 Switches and Modules
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 m d s f e e d b a c k - d o c @ c i s c o . c o m
For Generation 2 modules, the BB_SCN on ISLs (E or TE ports) is enabled by default. This can fail the
ISLs if used with the optical equipments using Distance Extension (DE), also known as buffer-to-buffer
credit spoofing.
Note If you use Distance Extension, or buffer-to-buffer credit spoofing on ISLs between switches, the
BB_SCN paramater on both sides of the ISL needs to be disabled.
To use the BB_SC_N field during PLOGI or FLOGI, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# interface fc 1/1
switch(config-if)#
Step 3
switch(config-if)# switchport fcbbscn
switch(config-if)# no switchport fcbbscn

Disabling ACL Adjacency Sharing for System Image Downgrade

As of Cisco MDS SAN-OS Release 3.0(3), Fibre Channel ACL adjacency sharing is enabled by default
on the switches with an active Generation 2 switching module. Fibre Channel ACL adjacency sharing
improves the performance for zoning and inter-VSAN routing (IVR) network address translation (NAT).
To prevent disruptions when downgrading the system image on your switch to a release prior to Cisco
SAN-OS Release 3.0(3), issue the following command in EXEC mode:
switch# system no acl-adjacency-sharing
To reenable Fibre Channel ACL adjacency sharing on your switch, issue the following command in
EXEC mode:
switch# system acl-adjacency-sharing

Displaying SFP Diagnostic Information

You can use the show interface transceiver command to display small form-factor pluggable (SFP)
diagnostic information for Generation 2 switching modules.
switch# show interface transceiver
...
fc12/12 sfp is present
OL-16184-01, Cisco MDS SAN-OS Release 3.x
name is CISCO-FINISAR
part number is FTRJ-8519-7D2CS1
revision is A
serial number is H11TVQB
fc-transmitter type is short wave laser w/o OFC (SN)
fc-transmitter supports intermediate distance link length
media type is multi-mode, 62.5m (M6)
Supported speed is 200 MBytes/sec
Disabling ACL Adjacency Sharing for System Image Downgrade
Purpose
Enters configuration mode.
Selects the interface and enters interface
configuration submode.
Enables the use of buffer-to-buffer state change
number for PLOGIs and FLOGIs on the interface.
Disables (default) the use of buffer-to-buffer state
change number for PLOGIs and FLOGIs on the
interface.
Cisco MDS 9000 Family CLI Configuration Guide
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