Fcip Compression - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 41 Configuring FCIP
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

FCIP Compression

The FCIP compression feature allows IP packets to be compressed on the FCIP link if this feature is
enabled on that link. By default the FCIP compression is disabled. When enabled, the software defaults
to using the auto mode (if a mode is not specified).
The "auto" mode (default) selects the appropriate compression scheme based on the card type and
Note
bandwidth of the link (the bandwidth of the link configured in the FCIP profile's TCP parameters).
Table 41-4
Table 41-4
Mode
mode1
mode2
mode3
With SAN-OS 3.3(1) and later NX-OS, all compression options (auto, mode1, mode2, mode3) mean
Note
hardware deflate on 9222i and MSM 18+4. There is no software compression.
The Cisco MDS 9216i and 9222i Switches also supports the IP compression feature. The integrated
Note
Table 41-5
Bandwidth
Any
>25Mbps
10-25Mbps
10Mbps
supervisor module has the same hardware components that are available in the MPS-14/2 module.
The compression modes in Cisco SAN-OS Release 2.0(1b) and later and NX-OS are incompatible with
Caution
the compression modes in Cisco SAN-OS Release 1.3(1) and earlier.
Tip While upgrading from Cisco SAN-OS Release 1.x to Cisco SAN-OS Release 2.0(1b) or later and
NX-OS, we recommend that you disable compression before the upgrade procedure, and then enable the
required mode after the upgrade procedure.
If both ends of the FCIP link are running Cisco SAN-OS Release 2.0(1b) or later and NX-OS and you
enable compression at one end of the FCIP tunnel, be sure to enable it at the other end of the link.
OL-18084-01, Cisco MDS NX-OS Release 4.x
lists the modes used for different cards.
Algorithm Classification
IPS Card
SW
SW
SW
Performance Settings
IPS Card
-
mode1
mode2
mode3
MPS 14/2 Card
HW
SW
SW
MPS 14/2 Card 18+4/9222i
- mode1/mode2/mode3
mode1 mode2/mode3
mode2 mode2/mode3
mode3 mode2/mode3
Cisco MDS 9000 Family CLI Configuration Guide
Configuring FCIP
18+4/9222i
HW
HW
HW
41-37