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pumba2016-04-04 17:02:49
VoIP
pumba, 2016-04-04 17:02:49

Cisco. IP telephony traffic + data?

Good afternoon! The following theoretical question arose.
There is a local network, it contains VoIP phones and computers, i.e. nothing unusual.
VoIP traffic is tagged (Vlan 14). Data traffic from computers is not tagged (Vlan 930). The grid is a garbage dump and is built on unmanaged switches, with the exception of the central D-Link DES-3028 switch. It is possible to clean up the grid by throwing out unmanaged switches and replacing them with Cisco managed L3, but D-Link DES-3028 must be left :)
And now the question arises of configuring Cisco so that IP telephony works and computers normally operate traffic on the LAN.
Do I understand correctly that on Cisco all ports will have to be configured as trunks, indicating allowed vlan 14 + native vlan 930, and access cannot be configured with ports, because access port at cisco cannot belong to several Vlan'am? Or are there any other ways?
I read a little cisco manuals, and found information that it’s enough just to specify voice vlan without binding to interfaces, and the switch itself will further resolve the traffic (but does this only work with cisco phones?)

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2 answer(s)
D
Den A, 2016-04-14
@pumba

Not quite so,
Trunks on access ports are not needed, two Vlans are configured on the port of Cisco switches (this is an exception for Voice): 1st Data (switchport access) 2nd Voice (switchport voice), the switch sees that the phone is connected and throws it into the Voice Vlan, the device connected via the phone, for example, remains to work in access (data) vlan'e Config
example for port + auto-QOS, 10 - vlan date, 11 - vlan for voice.
The last three lines are optional, but in some cases highly desirable (it is advisable to read at the beginning what it is and what it is for),
!
interface FastEthernet0/1
switchport access vlan 10
switchport mode access
switchport voice vlan 11

auto qos voip cisco-phone
spanning-tree portfast
spanning-tree bpduguard enable

!

C
chupasaurus, 2016-04-04
@chupasaurus

That's right. Voice VLAN only works for Cisco IP phones.

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