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DHCP Snooping

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Last Modified: 2012-05-09
Currently i have a network with 6 switches (4) 2950 and (2) 3508 switches.

We are expanding the switched network with 2 more switches 2960.

Currently DHCP snooping is not enabled on any switch, i would like to enable DHCP snooping on the new switches. So far i have only connected one of the new switches and enabled DHCP snooping globally on that switch and for only VLAN 10 (VLAN 10 is where my dhcp server is on one of the older switches).

When i connected a pc on the new switch (where dhcp snooping is enabled) it did not manage to get an ip and on the console i got a message.

1) Do i have to enable DHCP snooping on all other switches? I would like to avoid this.

2) If i simply set one port on the new switch to be trusted by DHCP snooping and connect the dhcp server directly to it  and leave the other swithces untouched would clients connected to the old switches where DHCP Snooping is not enabled still get ips?

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