DHCP Scopes
Hi
We are planning to create an additional DHCP scope on our servers. Currently we are on a 172.19.0.0/16 (i think) which allows any ips within 172.19.*.*.
Our servers are on a 172.19.10.* printers 172.19.200.* and clients/pc's on 172.19.105.*
I want to create another scope on my DHCP server for my voip phones as we will have 2x vlans to split the voice and data. Can we create an additional 172.19.106.* with easy ensuring only phone pick up the ips from here?
At our remote site (no windows DHCP server) we want to do the same. Can the cisco asa 5505 do this?
THanks
We are planning to create an additional DHCP scope on our servers. Currently we are on a 172.19.0.0/16 (i think) which allows any ips within 172.19.*.*.
Our servers are on a 172.19.10.* printers 172.19.200.* and clients/pc's on 172.19.105.*
I want to create another scope on my DHCP server for my voip phones as we will have 2x vlans to split the voice and data. Can we create an additional 172.19.106.* with easy ensuring only phone pick up the ips from here?
At our remote site (no windows DHCP server) we want to do the same. Can the cisco asa 5505 do this?
THanks
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172.19.0.0/16 is a general config across the LAN, firewall, router.
We have just separated up the ip's to make life a bit easier, or not.. :)
Currently we have 2x windows dhcp servers at HQ, splitting the 172.19.105.* range across both, so it can load balance if one should fail.
I assume creating another windows scope on each of the dhcp servers of 172.19.106.* (i.e. 172.19.106.1-100 & 172.19.106.101-200) for the voip phones is simple, but how do i ensure this scope is picked up by voip phones only?
We will have a POE switch in remote site and a cisco asa 5505 there too, but no windows dhcp box.
How best to setup this site for voip dhcp? Its been suggested statics, but id rather not.
We have just separated up the ip's to make life a bit easier, or not.. :)
Currently we have 2x windows dhcp servers at HQ, splitting the 172.19.105.* range across both, so it can load balance if one should fail.
I assume creating another windows scope on each of the dhcp servers of 172.19.106.* (i.e. 172.19.106.1-100 & 172.19.106.101-200) for the voip phones is simple, but how do i ensure this scope is picked up by voip phones only?
We will have a POE switch in remote site and a cisco asa 5505 there too, but no windows dhcp box.
How best to setup this site for voip dhcp? Its been suggested statics, but id rather not.
The POE switch will have to be configured with an IP heler/DHCP relay agent as well as have the 172.19.106.x Voice VLAN configuration.
When the DHCP requests are relayed, the scope IP helper/DHCP relay agent will be using the 172.19.106.x and will get an IP on that scope.
When the DHCP requests are relayed, the scope IP helper/DHCP relay agent will be using the 172.19.106.x and will get an IP on that scope.
ASKER
I assume this is for the remote site, or both sites?
You have a DHCP server at each Site?
Are your IP segments span two sites?
Are your IP segments span two sites?
ASKER
No, only one windows DHCP server @ HQ.
We will have a POE HP 2910al at remote site and a cisco asa 5505 at the remote site..
VPN between the two. HQ = 172.19.0.0/16 i think. Remote site = 192.168.2.0/32 i think
We will have a POE HP 2910al at remote site and a cisco asa 5505 at the remote site..
VPN between the two. HQ = 172.19.0.0/16 i think. Remote site = 192.168.2.0/32 i think
ASKER
Anything?
You can define IP helper on the CISCO to forward DHCP requests to the HQ.
However, this type of setup leaves your branch offices in perilous position i.e. if the connection to HQ goes down or your DHCP server goes down, you will have intermittent issues.
If you must have this setup, my recommendation would be that you make sure and add a secondary DHCP server with Split segments. 70%/30%
make sure to configure the remote cisco router's IP Helper for each of the DHCP
However, this type of setup leaves your branch offices in perilous position i.e. if the connection to HQ goes down or your DHCP server goes down, you will have intermittent issues.
If you must have this setup, my recommendation would be that you make sure and add a secondary DHCP server with Split segments. 70%/30%
make sure to configure the remote cisco router's IP Helper for each of the DHCP
ASKER
The switches are HP.
I do see a helper option but not sure exactly what need to be setup/entered?...
I do see a helper option but not sure exactly what need to be setup/entered?...
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ASKER
Sorry, been away.
So the helper can be used for the remote office where we do not have a true windows dhcp server?
We are now looking at having the data and voice switches (vlan01 and vlan10 respectively) connected separately in order to prioritise the traffic.
Still not 100% clear if this will work...
thanks
So the helper can be used for the remote office where we do not have a true windows dhcp server?
We are now looking at having the data and voice switches (vlan01 and vlan10 respectively) connected separately in order to prioritise the traffic.
Still not 100% clear if this will work...
thanks
ASKER
Create it where?