H323 Phone Install Page 51
15-601046 Issue 15b (16 July 2009)IP Office 4.2
Other Installation Options: VLAN and IP Phones
Example System Overview
IP Office Configuration
The table below details the configuration for IP Office. Additional
configuration is not required by IP Office in support 802.1 Tagging.
IP Phone- Configuration
For this example the IP phone was configured with
fixed IP addressing as shown below:
VLAN Switch Configuration
The table below summaries the HP configuration for ports and
VLAN’s.
The PC –Configuration
Shown below is the IP configuration of the PC1; no
option in support of 802.1p or 802.1q is enabled on
the PC.
Summary
On the port on which the PC and IP phone resides two types of Ethernet frames can be received (i.e. sent from Phone or
PC).
1.Tagged Packets are sent by IP Phone
2.Untagged packets are sent by PC
When an untagged packet is sent by the PC attached to the IP Phone port it will be propagated only to VLAN 210. This is
because when we added the port 3 to VLAN 210 the Mode option was specified as untagged. While for the other VLAN
(210) the option Tagged was select for port 3 in VLAN 209. Therefore tagged packets will go to VLAN 209 while the
untagged will go to 210.
When a packet is originated from an IP Phone it is tagged. Because the option un-tagged is selected for port 5 in VLAN
209 then the 802.1 tag is removed before the switch forwards the packet to this port. Similarly when an untagged packet
is originated and sent by IPO the switch will tag the packet before forwarding LAN port 3.
