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Hi all, 
 
I have a small infrastructure composed by a router and a switch. 
 
Router Cisco 881: 
-has vlan 2 and vlan 3 
-has a port configured as trunk 
 
Switch cisco Catalyst 2950: 
-has vlan 2 and vlan 3. Each vlan has a certain number of ports designated. 
-has a port configured as trunk 
 
In this configuration, everything works fine. 
 
I want to replace the Cisco Switch with a HP ProCurve 1800-24G. 
This switch, as far as i see, doesn't have CLI; only GUI. This wouldn't be a problem since i don't know HP syntaxes for configuration. 
In the GUI, if i try to designate a port to trunk mode, it doesn't let me; message appears &quot;minimum 2 ports for trunking, maximum 8&quot; (something like this). How does this work? why more ports for trunking? Why are there in the GUI maximum 12 trunks? 
Anyway...i assigned 2 ports for trunking, i created the vlans and assigned them to several ports and went to test it in my infrastructure. Nothing is working. The port lights are blinking, but i have no connection; DHCP not woking. Even if i assign manually the ip parameters to the machines connected to the switch, it still doesn't work. 
 
How do i have to configure this HP switch for trunking with my Cisco 881 router? 
 
Any suggest would be highly appreciated
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Hi all,

I have a small infrastructure composed by a router and a switch.

Router Cisco 881:
-has vlan 2 and vlan 3
-has a port configured as trunk

Switch cisco Catalyst 2950:
-has vlan 2 and vlan 3. Each vlan has a certain number of ports designated.
-has a port configured as trunk

In this configuration, everything works fine.

I want to replace the Cisco Switch with a HP ProCurve 1800-24G.
This switch, as far as i see, doesn't have CLI; only GUI. This wouldn't be a problem since i don't know HP syntaxes for configuration.
In the GUI, if i try to designate a port to trunk mode, it doesn't let me; message appears "minimum 2 ports for trunking, maximum 8" (something like this). How does this work? why more ports for trunking? Why are there in the GUI maximum 12 trunks?
Anyway...i assigned 2 ports for trunking, i created the vlans and assigned them to several ports and went to test it in my infrastructure. Nothing is working. The port lights are blinking, but i have no connection; DHCP not woking. Even if i assign manually the ip parameters to the machines connected to the switch, it still doesn't work.

How do i have to configure this HP switch for trunking with my Cisco 881 router?

Any suggest would be highly appreciated

config trunking on sw HP 1800-24G

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switches / Hubs

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.