Step By Step Description - 3Com Switch 4500 26-Port Configuration Manual

66 C 3: VLAN O
HAPTER

Step By Step Description

PERATION
Be sure that the OUI of the phone is included in the OUI table. This will
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certainly be the case by default for 3Com NBX phones but should be checked
for non-3Com phones
If a PWR unit is being used to power the VoIP phone, you must enable PoE on
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the required ports
If Cisco phones are used that are not IEEE 802.3af PoE compliant, but they
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support pre-standard PoE signaling, you may need to enable the legacy PoE
feature
Ensure phones are not pre-configured with a static IP address
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If used in a 3Com NBX network, be sure NBX Call processor is set to "Standard
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IP." Likewise, ensure the NBX Call Processor default Gateway is set to the
VLAN interface IP address. Note that any IP related configuration changes to
the NBX Call processor will require a reboot to take affect.
Figure 18 VoIP Sample Configuration with 3Com NBX
1 The DHCP Server (IP address is 10.10.11.205/24) connected to Port 2 of the switch
(Switch 4500-PWR) has three scopes:
10.10.11.0 (Address pool:10.10.11.211-250) for Data Vlan 1
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10.10.12.0 (Address pool: 10.10.12.100-130) for Data Vlan 5
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50.1.1.0 for Voice Vlan 50.
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This server needs to have Option 184 configured.
scopes.
Figure 19 displays the DHCP