Re: Cisco Vlan and IP helper

On Aug 29, 4:36 pm, dempsey_b <dempsey.b...@xxxxxxxxx> wrote:
Group, I've just implemented VLAN's enterprise wide. All is well
*EXCEPT* our citrix clients are not finding application sets.

Example, I have Vlan20
with two ip helper addresses:

10.1.20.102 <- our dhcs server
10.1.20.181 <- a server from our Citrix farm

From Global, I've also added a protocol forward for 1609 UDP....

I still am not able to connect to our citrix published applications.

If I go into the Citrix Client, and manually add "10.1.20.181" under
service addresses, all works well. I don't want to have to do
this on all workstations.

I have removed all ACLs with no luck.

Anyone have any advice?

Your description of the problem raises several questions and one
comment.

Comment:
You've "implemented VLAN's" --- If you were using switches (as opposed
to hubs) you were already using VLAN's - probably VLAN 1.

Question 1:
You are using VLAN 20 and the helper addresses you gave seems to
indicate the subnet 10.1.20.0/24.
Is VLAN 20 the same VLAN as where the 10.1.20.x addresses are?
If this is true, then you don't need the ip helper addresses at all
due to the fact that the broadcasts are already reaching their
intended target.

Question 2:
Assuming the answer to question 1 is that 10.1.20.x is NOT on VLAN
20...
Why are you including the IP address of the Citrix server in the
forwarding of the UDP broadcasts? - Does the Citrix machine serve as a
DHCP server as well?

Question 3:
What purpose does forwarding UDP port 1609 serve to help in the
problem you are experiencing?


JC

.

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