Problems to assign IP ADDRESS Cisco Switch Catalyst 3750.

[flielguera]

Good evening friends, please, if you can help me with an apparently basic problem: In my platform of switches I have several 3750 old people, in one of these switches I have several desktops. As of this morning, the PCs, which are connected to a Cisco IP phone, are not assigned IP (VLAN 1), the IP phone does receive IP and connects to the Call Manager (VLAN 13). SWITCH stations are configured in PORT-SECURITY mode. Anyone have any idea what is going on. If you can help me.

[Reza Sharifi]

Hi,

For testing, remove the port security configuration from one of the interfaces, test and see if the PC can get IP.

Also, can you post the output of "sh run" from the switch?

HTH

[paul driver]

Hello

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@flielguera wrote:
the PCs, which are connected to a Cisco IP phone, are not assigned IP (VLAN 1),
the IP phone does receive IP and connects to the Call Manager (VLAN 13). SWITCH stations

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As you dont state what prt-security is applied, as this time as suggsted by @Reza Sharifi  I would remove it

Acess Port example:
int x/x
switchport mode access
switchport access vlan x  <--data vlan
switchport voice vlan 13
spanning-tree portfast
no switchport port-security

[Georg Pauwen]

Hello,

on a side note, what is the uptime of the switches ? Very long (> x years) uptimes can sometimes cause these symptoms. Rebooting the switch could help...