Configuring Ntp - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

NTP Configuration
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
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Not even a server down time will affect well-configured switches in the network.
network with two NTP stratum 2 servers and two switches.
Figure 5-3
Stratum-2
Server-1
In this configuration, the switches were configured as follows:
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Configuring NTP

You can configure NTP using either IPv4 addresses, IPv6 addresses, or DNS names.
Cisco MDS 9000 Family CLI Configuration Guide
5-20
A peer configured alone takes on the role of a server and should be used as backup. If you have two
servers, then you can have several switches point to one server, and the remaining switches to the
other server. Then you would configure peer association between these two sets. This forces the
clock to be more reliable.
If you only have one server, it's better for all the switches to have a client association with that server.
NTP Peer and Server Association
From lower stratum
server-1
Peer association
Server
association
Peer association
Switch-1
Stratum 2 Server 1
– IPv4 address–10.10.10.10
Stratum–2 Server-2
– IPv4 address–10.10.10.9
Switch 1 IPv4 address–10.10.10.1
Switch 1 NTP configuration
NTP server 10.10.10.10
–
NTP peer 10.10.10.2
–
Switch 2 IPv4 address–10.10.10.2
Switch 2 NTP configuration
NTP server 10.10.10.9
–
NTP peer 10.10.10.1
–
From lower stratum
server-2
Stratum-2
Server-2
Server
association
Switch-2
Chapter 5 Initial Configuration
Figure 5-3
OL-16184-01, Cisco MDS SAN-OS Release 3.x
displays a