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Phone are getting IP from 2 vlan data and voice and do not communicate with each others.

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  • 1.  Phone are getting IP from 2 vlan data and voice and do not communicate with each others.

    Posted Feb 03, 2021 10:21 PM

    Hi all, I really need help with the following topology: Cisco uc320w as dhcp server from vlan 1 (192.168.1.0) and vlan 100 (10.1.1.0) then go throw lan to:
    Switch HP 2520, I just created the vlan 100 and tagged to all port, and set it as voice, that is the only config I set it. 

    the problem: some phones gets ip from the voice vlans and some from data vlan. 

    There are more commands to set into the sw? 

    thanks for help.


    #switch
    #VoIP
    #VLAN
    #Voice


  • 2.  RE: Phone are getting IP from 2 vlan data and voice and do not communicate with each others.

    EMPLOYEE
    Posted Feb 04, 2021 02:26 AM

    Hi @lpaez 

    The HP edge switches would normally be configured with the PC Vlan "untagged" and the voice Vlan "tagged". (Tagging allows for 802.1Q Tag for phones)

    From your statement i understand that you have tagged VLAN 100 as Voice VLAN . Since you said some phone get IP from voice VLAN and some from data VLAN , is that possible to share the interface config ? 

    Also i suggest you to refer below link which explains about voice vlan configuration 

    https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c03386522



  • 3.  RE: Phone are getting IP from 2 vlan data and voice and do not communicate with each others.

    Posted Feb 04, 2021 09:18 AM

    Hi jmpk, thanks for your help, my topology is very simple, only have the cisco central and then the L2 switch, there is no L3 edge sw, here is my vlan configs:

    hostname "ProCurve Switch 2520-24-PoE"
    vlan 1
    name "DEFAULT_VLAN"
    untagged 1-28
    ip address dhcp-bootp
    exit
    vlan 100
    name "VOip"
    qos priority 7
    ip address dhcp-bootp
    tagged 1-28
    voice
    exit
    snmp-server community "public" Unrestricted
    primary-vlan 100

    thanks



  • 4.  RE: Phone are getting IP from 2 vlan data and voice and do not communicate with each others.

    EMPLOYEE
    Posted Feb 04, 2021 10:29 AM

    Hi @lpaez 

    The config looks good on switch  . If the switch is acting as L2 , where  L3 routing happens  or your DHCP server lease the IP address based on VLAN Tagging ? 

    What is the frimware on the device ?



  • 5.  RE: Phone are getting IP from 2 vlan data and voice and do not communicate with each others.

    Posted Feb 04, 2021 11:46 AM

    The cisco Cisco uc320w serves as dhcp of both vlans.  Version 2.3.2 (6)

    dhcp vlan 1 (data) 192.168.1.1
    dhcp vlan 100 (voice) 10.1.1.1

    but there is no much to configurate in there, is as simple as select the topology and set the ranges for the vlans