One per actual site. Servers are already set to look at another site for primary DNS then it’s self for secondary. The odd thing is, nslookup resolves just fine but you can’t ping by host name, only IP. That’s where I’m lost.
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DNS servers are AD integrated. I can not resolve let’s say site A’s DC name from site B and vice versa. DFSR is the main problem since it used for replication but we also can not access files server and some app server that use host name for communication. I will have to log in and double check firmware to be sure but I know we are on a 15.x version. I will log in later and check as I’m currently on my way home.
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Each site has a DNS server. Local DNS at each site is working fine. It just name resolution between sites. No SD-WAN rules blocking anything. Local firewalls were disable for testing to eliminate that possibility.
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So we are having some issues with AD replication over site to site VPN. We have 15 locations all setup for site to site. Each location has it's own DC all running on one domain. Recently we started having an issue where we can not resolve host names of the other locations. This has stopped DFSR replication from working. I can reach everything by IP but not by host name or FQDN. Anyone have this issue before?
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