Veritas Cluster Server Bundled Agents Reference Guide
Veritas⢠Cluster Server Bundled Agents Reference Guide - Symantec
Veritas⢠Cluster Server Bundled Agents Reference Guide - Symantec
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Network agents<br />
Lanman agent<br />
59<br />
IPv6 IPRes (<br />
Address = "2001:db8:0:1:d78:341e:2f7c:5879"<br />
Prefix = "2001:db8:0:1::/64"<br />
MACAddress @SYSTEM1= 00-50-56-9F-53-DE<br />
MACAddress @SYSTEM2 = 00-10-18-10-CB-1F<br />
MACAddress @SYSTEM3 = 00-10-18-10-CA-DC<br />
)<br />
Lanman agent<br />
The Lanman agent enables clients to access data and applications on a cluster<br />
node by associating the virtual IP address with the virtual computer name in the<br />
WINS database. The agent provides the option of associating multiple IP addresses<br />
from different subnets with the virtual computer name. The agent also provides<br />
the option of creating the virtual computer object in any organizational unit in<br />
the Active Directory and enhances the DNS updating capabilities of VCS.<br />
The Lanman agent registers the following services with the WINS server:<br />
■<br />
■<br />
■<br />
<strong>Server</strong> (20h)<br />
Workstation (00h)<br />
Messenger (03h)<br />
In an IPv6 environment, the Lanman agent relies on the DNS records to check for<br />
duplicate server names on the network. If the DNS entry for a virtual server name<br />
that uses an IPv6 address does not exist, the agent fails to validate the server for<br />
name duplication on the network. If the virtual IP is an IPv6 address, you must<br />
specify the DNS server IP address, either in the network adapter properties or in<br />
the Lanman agent’s AdditionalDNS<strong>Server</strong>s attribute.<br />
The agent supports Kerberos authentication by providing the option of adding<br />
the virtual computer name to the Active Directory and adding the virtual IP address<br />
to the DNS. The agent uses the VCS Helper Service user context for AD and DNS<br />
updates.<br />
The Lanman agent updates and monitors the canonical name (CNAME) mapping<br />
in the domain name server when failing over applications across subnets<br />
(performing a wide-area failover.) The Lanman agent also supports creating DNS<br />
records in different DNS zones.<br />
DNS scavenging affects virtual servers configured in VCS because the Lanman<br />
agent uses DDNS to map virtual names with IP addresses. If you use scavenging,<br />
then you must set the DNSRefreshInterval attribute. This will enable the Lanman<br />
agent to refresh the resource records on the DNS servers. See the<br />
DNSRefreshInterval attribute description for more information.
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