Re: 2 Dns Servers, 2 Gateways, 3 Subnets

Hello ricardogarrido,

Separate the networks with routers or switches with VLAN option. The DC should
not be multihomed as it is now. A DC should only use a single ip address
from one LAN and if you built your LAN/WAN with routers it will still authenticate
users from another LAN, if rotuing is setup correct and clients know the
correct DNS servers to find the DC.

http://msmvps.com/blogs/acefekay/arc...-problems.aspx

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm


> Hi everyone. I came to discover this wonderful forum and i'm asking
> for your help on one issue.
>
> I recently whas hired on one company and inherited a lot of network
> problems.
>
> There are 3 subnets, 2 gateways (same isp/different links) and 2 dns
> servers as indicated:
>
> (1) - 192.168.10.0 - network 1 / gateway 1 (30 clients) (2) - 10.0.0.0
> - network 2 / gateway 2 (80 clients) (3) - 192.168.1.0 - virtual
> machines network (10 clients)
>
> There is one DC (limitation) connected to the 3 networks
> there are several member servers (VMs and hosts) also connected to the
> 3 networks.
> The dhcp offers IPs to networks 1 and 2 (fixed ips on 3)
> the dc is the network 1 dns.
> a member server is the network 2 dns.
> both gateways (routers) point to internal network dns.
> dhcp/dns 1/ad
> dns 2
> DC
> MEMBER SERVER
> 192.168.1.10
> 192.168.1.15
> 192.168.10.10
> 192.168.10.15
> 10.0.0.10
> 10.0.0.15
> |
> |
> |
> |
> Gateway 1
> Gateway 2
> 192.168.10.1
> 10.0.0.138
> Both DNSs point to themselves and the clients receive the network's
> dns
> server ip.
> Both have forwarders configured (ISP).
> All member servers are connected to the 3 networks, which gives some
> resolution problems.
> Network 1 experiences some dns instability. one moment everythings ok
> and sometimes dns resolution fails (recursive query fails).
> I don't know what to make of this mess. The fact that all servers are
> connected to the 3 networks and have 2 gateways makes proper
> configuration a problem.
>
> What should i do to ensure proper dns resolution and overall network
> stability?
>
> http://forums.techarena.in
>

Hello ricardogarrido,

Posted the wrong link:
http://msmvps.com/blogs/acefekay/arc...-adapters.aspx

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm


> Hello ricardogarrido,
>
> Separate the networks with routers or switches with VLAN option. The
> DC should not be multihomed as it is now. A DC should only use a
> single ip address from one LAN and if you built your LAN/WAN with
> routers it will still authenticate users from another LAN, if rotuing
> is setup correct and clients know the correct DNS servers to find the
> DC.
>
> http://msmvps.com/blogs/acefekay/arc...chimney-and-rs
> s-features-may-cause-slow-file-transfers-or-cause-connectivity-problem
> s.aspx
>
> Best regards
>
> Meinolf Weber
> Disclaimer: This posting is provided "AS IS" with no warranties, and
> confers
> no rights.
> ** Please do NOT email, only reply to Newsgroups
> ** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm
>> Hi everyone. I came to discover this wonderful forum and i'm asking
>> for your help on one issue.
>>
>> I recently whas hired on one company and inherited a lot of network
>> problems.
>>
>> There are 3 subnets, 2 gateways (same isp/different links) and 2 dns
>> servers as indicated:
>>
>> (1) - 192.168.10.0 - network 1 / gateway 1 (30 clients) (2) -
>> 10.0.0.0 - network 2 / gateway 2 (80 clients) (3) - 192.168.1.0 -
>> virtual machines network (10 clients)
>>
>> There is one DC (limitation) connected to the 3 networks
>> there are several member servers (VMs and hosts) also connected to
>> the
>> 3 networks.
>> The dhcp offers IPs to networks 1 and 2 (fixed ips on 3)
>> the dc is the network 1 dns.
>> a member server is the network 2 dns.
>> both gateways (routers) point to internal network dns.
>> dhcp/dns 1/ad
>> dns 2
>> DC
>> MEMBER SERVER
>> 192.168.1.10
>> 192.168.1.15
>> 192.168.10.10
>> 192.168.10.15
>> 10.0.0.10
>> 10.0.0.15
>> |
>> |
>> |
>> |
>> Gateway 1
>> Gateway 2
>> 192.168.10.1
>> 10.0.0.138
>> Both DNSs point to themselves and the clients receive the network's
>> dns
>> server ip.
>> Both have forwarders configured (ISP).
>> All member servers are connected to the 3 networks, which gives some
>> resolution problems.
>> Network 1 experiences some dns instability. one moment everythings ok
>> and sometimes dns resolution fails (recursive query fails).
>> I don't know what to make of this mess. The fact that all servers are
>> connected to the 3 networks and have 2 gateways makes proper
>> configuration a problem.
>> What should i do to ensure proper dns resolution and overall network
>> stability?
>>
>> http://forums.techarena.in
>>