Time Stamp Control - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual
Cisco mds 9000 family cli configuration guide - release 4.x (ol-18084-01, february 2009)
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Table of Contents
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
any switch in the Cisco MDS 9000 Family. One TCP connection is within the specified limit. If the peer
initiates one TCP connection, and your MDS switch is configured for two TCP connections, then the
software handles it and proceeds with just one connection.
To specify the TCP connection attempts, follow these steps:
Command
Step 1
switch(config-if)# tcp-connection 1
switch(config-if)# no tcp-connection 1
Step 2
switch(config-if)# no shutdown
Time Stamp Control
You can instruct the switch to discard packets that are outside the specified time. When enabled, this
feature specifies the time range within which packets can be accepted. If the packet arrived within the
range specified by this option, the packet is accepted. Otherwise, it is dropped.
By default, time stamp control is disabled in all switches in the Cisco MDS 9000 Family. If a packet
arrives within a 2000 millisecond interval (+ or –2000 msec) from the network time, that packet is
accepted.
The default value for packet acceptance is 2000 microseconds.
Note
If the time-stamp option is enabled, be sure to configure NTP on both switches (see the
Configuration" section on page
Tip
Do not enable time stamp control on an FCIP interface that has tape acceleration or write acceleration
configured.
To enable or disable the time stamp control, follow these steps:
Command
Step 1
switch(config-if)# time-stamp
Please enable NTP with a common time
source on both MDS Switches that are
on either side of the FCIP link
switch(config-if)# no time-stamp
Step 2
switch(config-if)# time-stamp
acceptable-diff 4000
switch(config-if)# no time-stamp
acceptable-diff 500
Step 3
switch(config-if)# no shutdown
OL-18084-01, Cisco MDS NX-OS Release 4.x
Purpose
Specifies the number of TCP connections. Valid values
are 1 or 2.
Reverts to the factory set default of two attempts.
Enables the interface.
5-19).
Purpose
Enables time stamp checking for received packets with a
default acceptable time difference of 2000 msec.
Disables (default) time stamps.
Configures the packet acceptance time. The valid range is
from 500 to 10,000 msec.
Deletes the configured time difference and reverts the
difference to factory defaults. The default difference is a
2000-millisecond interval from the network time.
Enables the interface.
Cisco MDS 9000 Family CLI Configuration Guide
Configuring FCIP
"NTP
41-21
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