Ethernet Switches & Routers

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New Contributor
Posts: 2
Registered: ‎08-16-2011

Foundry BigIron 8000

Hi there,

We are using Foundry BigIron 8000 hardware for our network.

I have some problem here.

We are using CIMPLICITY HMI SCADA software (product from GE).

This software using broadcast UDP technology.

We are planning to implement VLAN topology in our environment.

GE advise us to open UDP port 32000 in order to read the signal from another VLAN.

Eg:

VLAN 1 – consists of Server and Client Group 1

VLAN 2 – Client Group 2

VLAN 3 – Client Group 3

Now we already open UDP port 32000.

At the same time, we also configure ip-helper – for each of the server.

Result of the testing, we found that signal can go through to others VLAN, but for some period only – around 10 to 20 minutes.

Please assist us in order to sustain the UDP broadcast between VLAN.

Thank you very much.

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: Foundry BigIron 8000

Hi mdazhan,

     I assume these are layer3 VLAN's?

     I also assume that there is no issue in VLAN1?

I also assume you have the following the config

BigIron(config)# no ip forward-protocol udp 32000

and somthing like the following

BigIron(config)# interface e 1/2

BigIron(config-if-e1000-1/2)# ip helper-address x.x.x.x

on each port in the other VLAN's that need to talk to the server?

There are no timeout to enable/disable for UDP forwarding.

Can you please confirm?

Thanks

Michael.

New Contributor
Posts: 2
Registered: ‎08-16-2011

Re: Foundry BigIron 8000

Hi Micheal,

I assume these are layer3 VLAN's?

--> yes

I also assume that there is no issue in VLAN1?

--> yes

refer below for our configuration:

VLAN 1 – consists of Server and Client Group 1

VLAN 2 – Client Group 2

VLAN 3 – Client Group 3

--------------------------------------------------------------------------------

ip forward-protocol udp 32000

!

interface ve 202

port-name VLAN2

ip address xxx.xxx.xxx.xxx 255.255.255.0

ip helper-address 1 xxx.xxx.xxx.xxx unicast

ip helper-address 2 xxx.xxx.xxx.xxx

ip helper-address 3 xxx.xxx.xxx.xxx

ip helper-address 4 xxx.xxx.xxx.xxx

!

!

interface ve 121

port-name VLAN3

ip address xxx.xxx.xxx.xxx 255.255.255.0

!

!

interface ve 11

port-name VLAN1

ip address xxx.xxx.xxx.xxx 255.255.0.0

!

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: Foundry BigIron 8000

Looking at the below

Configuring an IP Helper Address

To forward a client’s broadcast request for a UDP application when the client and server are on different networks, you must configure a helper address on the interface connected to the client. Specify the server’s IP address or the subnet directed broadcast address of the IP subnet the server is in as the helper address.

IP helper is used to forward the client's broadcast address to the server.  Is this the direction on the traffic e.g. Client send UDP 32000 broadcast datagrams to the server?

If so then then you need to configure the IP-helper in the client VLAN on the port or under the VE for the client; not in the server port or VE.

If it server to client then the ip forward-protcol udp 32000 should be enough.

If it is both then you need both in place.

Note: I am not sure what happens when you ave more then one ip helper configured though.

Thanks

Michael.

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