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Dhcp from linksys to catalyst Model number: WS-C2950G-24-EI

Should a linksys 4 switch port wireless router be able to DHCP a private IP address to a catalyst 2950 switch?

3 REPLIES

Re: Dhcp from linksys to catalyst Model number: WS-C2950G-24-EI

Do you mean that the 2950 itself would try to get an ip address from the DHCP for it's own mgmt interface? 2950 does not supported "ip address dhcp". You must statically define ip address for it's mgmt interface.

If you are asking if Linksys, that has a capability to be DHCP Server, can suppply ip addresses to the devices connected to 2950's ports then yes. The switch just switches packets.

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New Member

Re: Dhcp from linksys to catalyst Model number: WS-C2950G-24-EI

Does that mean this only applies to the non-mgmt interfaces?

Understanding DHCP-Based Autoconfiguration

The DHCP provides configuration information to internet hosts and internetworking devices. This

protocol consists of two components: one for delivering configuration parameters from a DHCP server

to a device and one for allocating network addresses to devices. DHCP is built on a client-server model,

where designated DHCP servers allocate network addresses and deliver configuration parameters to

dynamically configured devices.

With DHCP-based autoconfiguration, your switch (DHCP client) can be automatically configured at

startup with IP address information and a configuration file that it receives during DHCP-based

autoconfiguration. No DHCP client-side configuration is required on your switch.

However, you need to configure the DHCP server for various lease options. You might also need to

configure a TFTP server, a Domain Name System (DNS) server, and possibly a relay device if the servers

are on a different LAN than your switch. A relay device forwards broadcast traffic between two directly

connected LANs. A router does not forward broadcast packets, but it forwards packets based on the

destination IP address in the received packet. DHCP-based autoconfiguration replaces the BOOTP client

functionality on your switch.

DHCP Client Request Process

When you boot your switch, the DHCP client can be invoked and automatically request configuration

information from a DHCP server under these conditions:

? The configuration file is not present on the switch.

? The configuration file is present, but the IP address is not specified in it.

? The configuration file is present, the IP address is not specified in it, and the service config global

configuration command is included. This command enables the autoloading of a configuration file

from a network server.

Re: Dhcp from linksys to catalyst Model number: WS-C2950G-24-EI

Sorry, I misunderstood.

With DHCP-based autoconfiguration, no DHCP client-side configuration is needed on your switch. However, you need to configure the DHCP server for various lease options associated with IP addresses. If you are using DHCP to relay the configuration file location on the network, you might also need to configure a TFTP server and a Domain Name System (DNS) server.

The DHCP server for your switch can be on the same LAN or on a different LAN than the switch. If the DHCP server is running on a different LAN, you should configure a DHCP relay device between your switch and the DHCP server. A relay device forwards broadcast traffic between two directly connected LANs. A router does not forward broadcast packets, but it forwards packets based on the destination IP address in the received packet.

DHCP-based autoconfiguration replaces the BOOTP client functionality on your switch.

Check the DHCP Server configuration.

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