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Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 9 Switch Operating Procedures
Managing the Time of Day Across the Network Using SNTP
To set synchronized network clocks, you need to perform the following task in order:
1.
Set up a primary server for the network client.
2.
Set up a secondary server (or several secondary servers), which serves as a backup server if the
SNTP client cannot reach the primary server.
3.
Configure the network client.
To synchronize the primary and secondary servers, the SNTP client must be enabled on the node or nodes
on which the servers are running. Since an SNTP client is not supported on an SES, The supported
primary and secondary configurations are as follows:
•
An SES is the primary server, and an MGX is the secondary server.
•
An SES is the primary server, and another SES is the secondary server.
Use the following procedure to set up TOD synchronization in your network.
Note
SNTP clients and servers run only on active PXM cards.
Step 1
Select a primary server that is able to provide reliable TOD information to the network.
Step 2
At the SES PXM1 prompt, enter the cnfsntp -server on -stratum <stratum level > command to enable
the server and configure the stratum level. Replace <stratum level > with the stratum level for the server.
espses.1.PXM.a >
cnfsntp
-server on -stratum 1
describes the cnfsntp command parameters you must use to set up a server.
Step 3
On an MGX node, set up an SNTP client to point to the SES SNTP server using the addsntprmtsvr as
shown in the following example.
mgx.1.PXM.a >
addsntprmtsvr
<server IP address> on -version <
version
> -primary yes
Replace <server IP address> with the IP address of the SES server you set up in Step 1 and Step 2.
Replace <version> with the SNTP version.
describes the cnfsntprmtsvr command parameters you must use to set up a remote server.
Table 9-10
cnfsntp Command Parameters
Parameter
Description
-server
Toggles the primary SNTP server on or off.
-stratum
Stratum of the SNTP client. The default is 0.