Pinpoint DNS entries offer an alternative in these cases. Since this can lead to management overhead, some network administrators prefer to avoid split DNS configurations. Entries present in the external zone, but not in the internal zone must fail to resolve for internal queries. In a split DNS configuration, an internal DNS server maintains a copy of the zone with internal-specific entries and an external DNS server maintains a copy of the zone with external-specific entries. Thus, in order to provide different name resolution within the same domain to internal and external users of the domain normally, a split DNS would be used. If a Name Server is configured as authoritative or master for a domain, then queries are not forwarded for names within that domain to its forwarders, even if it can be unable to resolve a specific name. It is also a supported solution for Cisco Jabber deployment if split DNS is not available. This is a feature of the DNS system and does not rely on any mechanism in the Cisco Jabber or Cisco Expressway applications. The following image provides an example of these records: Pinpoint pro optics windows#The symbol is also used in Windows Command Line Interface (CLI) tools, and works the same way as in BIND. The record can be of any type supported by the DNS. This record is a self-reference, identical to the name of the zone and show up as same as parent folder in Microsoft DNS, or is referred to by an symbol in the BIND zone file. The pinpoint zone usually contains a single record besides the required Start of Authority (SOA) and Name Server records. This allows other DNS queries for this domain to be forwarded to the authoritative sever. This entry can be defined as authoritative on a Name Server, which is not authoritative for the parent domain. The pinpoint DNS entry is a zone created for a single host only. If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. Note: The internal NS is used by internal users, as well as Video Communication System (VCS) / Cisco Expressway-C. Instructions for other types of DNS servers are not provided, but the concept can be used with any other DNS server if the server supports this configuration. You only need to use the steps appropriate for your particular DNS server. Note: The information in this document can be used either with Microsoft DNS server, or BIND.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |