<br><div class="gmail_quote">Em 27 de abril de 2011 00:33, Usuário do Sistema <span dir="ltr"><<a href="mailto:maiconlp@ig.com.br">maiconlp@ig.com.br</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<br>
in my switch structure all it's ready....I have switch Cisco and I've<br>
configuration ip helper address in my vlan 1.<br>
<br></blockquote><div><br>Hi "Usuário do Sistema",<br><br>Check that you have an "ip helper-address" configured in each vlan interface, except that one that reach the DHCP server.<br><br>In example, said you have VLANs 10, 20 and 30. So you have these interfaces on your switch (I'm suposing you're using a L3 switch):<br>
<br>interface vlan 10<br> ip address 192.168.10.1 255.255.255.0<br> ip helper-address 192.168.30.30<br>!<br>interface vlan 20<br> ip address 192.168.20.1 255.255.255.0<br> ip helper-address 192.168.30.30<br>!<br>interface vlan 30<br>
ip address 192.168.30.1 255.255.255.0<br>!<br><br>As the DHCP server is part of VLAN 30, there's no need to include an "ip helper-address" in VLAN 30.<br><br>By the way, you know that you can configure your DHCP server directly in the L3 Switch (suposed that you're using a Catalyst Switch)?<br>
<br>ip dhcp excluded-address 192.168.10.1 192.168.10.10<br>ip dhcp excluded-address 192.168.20.1 192.168.20.10<br>ip dhcp excluded-address 192.168.30.1 192.168.30.10<br>
ip dhcp pool VLAN10<br> network 192.168.10.0 255.255.255.0<br> default-router 192.168.10.1<br> dns-server 8.8.8.8<br>!<br>ip dhcp pool VLAN20<br>
network 192.168.20.0 255.255.255.0<br>
default-router 192.168.20.1<br>
dns-server 8.8.8.8<br>
!<br>
ip dhcp pool VLAN30<br>
network 192.168.30.0 255.255.255.0<br>
default-router 192.168.20.1<br>
dns-server 8.8.8.8<br>
!<br>
<br>This is a good alternative if you don't have a DHCP server configured now, or if you don't need the extra resources offered by a full featured DHCP Server like ISC DHCP.<br></div></div>