Can I have 2 DNS servers
Its recommended to have at least one of your DNS servers in a different location, as youll need at least two DNS servers for each Internet domain you own. You can have more than two for a domain, but three is typically the maximum unless you have multiple server farms where youd want to distribute the DNS lookup load.
Can you have two DNS providers
The domain name itself can only be registered with one company, but you can have as many DNS providers as you like.
How do I change my DNS primary and secondary
Tap `Don't Auto-Obtain` and enter in the DNS info as follows:
- If necessary, enter the period (.) between each number as you tap “Primary DNS,” then tap “OK” to return to the DNS screen.
- Enter 208.67.220.220 in the “Secondary DNS” field, then tap “OK” to return to the DNS screen.
How do I know if my DNS is down
You can log into the DNS server and ping a few machines to see if the network connectivity of your DNS is functioning properly. If it is, then your network connectivity is not the issue. You can also look for random devices and try pinging your DNS server from them.
What is split DNS configuration
Split Domain Name System (Split DNS) is a configuration that increases security by creating two DNS servers (sub-domains) for the same domain, one for the internal network and the other for the external.
What happens if DNS server down
Because it only takes a few seconds for the news to spread, everyone knows the server is down if the DNS server is down because the browser is unable to obtain the websites IP address.
How does DNS work with multiple IP addresses
Every time the DNS server is contacted, it sends the IP address with which it most recently responded to the back of the queue, working in a loop. A DNS server with round-robin enabled will have multiple different A records, each with the same domain name but a different IP address.
What is DNS TTL
DNS TTL (time to live) is a setting that instructs the DNS resolver how long to cache a query before requesting a new one. The data obtained is then stored in the cache of the recursive or local resolver for the TTL before it reaches out to gather new, updated information.
How many DNS records are there
DNS records, or domain name system records, are officially referred to as resource records, and on the BlueCat platform, we refer to them as DNS query types. There are about 90 different official resource record types.
How does DNS work on the Internet
The DNS system on the Internet manages the mapping between names and numbers, much like a phone book. DNS servers translate requests for names into IP addresses, deciding which server an end user will access when they type a domain name into their web browser.
What happens if you have multiple DNS servers
Most, if not all, DNS service providers use multiple nameservers for high availability and redundancy, allowing them to mitigate most issues without clients even being aware. A multi-DNS architecture is one that uses authoritative DNS nameservers from two or more providers.
How can I add more than 2 DNS servers
Show activity on this post. Click “Advanced” under TCP/IP Settings, then choose the “DNS” tab, where you can add more DNS servers.
Why do I have 2 DNS servers
The main purpose of having a secondary DNS server is to act as a backup in case the main DNS server managing your domain goes down. In this scenario, your server would still be operational, and since you wouldnt have a backup, nobody would be able to access it, which could cost you a lot of lost clients (i.e. REAL MONEY).
Can you have 2 DHCP servers on a network
Each of the DHCP servers must be reachable either by direct attachment to the subnet or by using a DHCP/BOOTP relay agent. You can configure two or more DHCP servers to serve the same subnet, so that if one server fails, the others can continue to serve the subnet.
Why do I have 3 DNS servers
Your domain most likely has multiple servers hosting various services; for example, its likely that your mail services are hosted on a different server than your web services, meaning that even if your web server goes down, your mail will probably still be delivered.
Do I need a secondary DNS server
Although the DNS system can function even if only one primary server is available, secondary DNS servers are generally recommended and are frequently required by domain registrars.
What is the best DNS server to use
Some of the most trustworthy, high-performance DNS public resolvers and their IPv4 DNS addresses include:
- Cisco OpenDNS: 208.67. 222.222 and 208.67. 220.220;
- Cloudflare 1.1. 1.1: 1.1. 1.1 and 1.0. 0.1;
- Google Public DNS: 8.8. 8.8 and 8.8. 4.4; and.
- Quad 9: 11.12, 149.112, 9.9, and 11.11.
How many DNS servers can be configured in Windows
For Windows Server 2003 DHCP servers, you can configure a list of up to 25 DNS servers for each client with this option. Enable option code 6 on the configured options types provided by your DHCP server to provide an IP address list of DNS servers to your DHCP clients.