Voip on l3 switch

[BilalButt62333]

I am doing VoIP on l3 switch all phones are getting ip but don't extension number because I don't know how to do that on l3 switch as there's no option of "telephonic-service" on l3 switch as on the router is possible.

kindly help in this scenario how to do with following options:

1. how to assign extension to ipPhones with just l3 switch if possible

2. how to assign ip and extension with mac address binding 

[balaji.bandi]

Most of the deployment have Voice and Data VLAN Separate

example VLAN 7- - voice in your case, and Data VLAN 60 ( example)

Voice over IP relies on Options settings, a major requirement is NTP / TFTP / Call Manager Server for provisioning.

ip dhcp exclude-address 172.16.10.1 172.16.10.13

!

ip dhcp pool voip

network 172.16.10.0 255.255.254.0

default-router  172.16.10.1

domain-name voice.local

dns-server 4.2.2.1 4.2.2.2 (this can be local)

option 42 ip 172.16.10.X (for NTP)

option 66 ip 172.16.10.X  (for TFTP)

option 150  ip 172.16.10.13  (for Call server)

===

Reserver IP for call Manager 

ip dhcp pool call-manager
host 172.16.10.13 255.255.254.0
client-identifier XXXXXXXXXXXXXXXXXX (MAC Address of server)

Interface vlan 70

ip address 172.16.10.1 255.255.254.0

ip-helper address 172.16.10.1  - no harm in addintg here 

Int fas x/x

switchport access vlan 60

switchport voice vlan 70

auto qos trust dscp

[BilalButt62333]

kindly me explain what purpose of following:

1. ip-helper address 172.16.10.1  - no harm in addintg here 

2. auto qos trust dscp

3. ip dhcp pool call-manager
host 172.16.10.13 255.255.254.0
client-identifier XXXXXXXXXXXXXXXXXX (MAC Address of server)

note: in my case IP phones are  gxp1625 and VOIP server is open source also how to add extension(numbers ) to phones in l3 switch 3750 or do we have to do on VoIP open-source server for this

[balaji.bandi]

1. where the DHCP Server to pick up the address for the end device in vlan 70

2. QoS setting 

3. make a static reservation for the Call server

You more Looking to integration, so you need to spend more time, how each thing works before you integrate together.

more information can be found here :

https://www.voip-info.org/

[BilalButt62333]

well so understandable answer also can you tell me how to bind mac address with ip of ipphones on l3 switch in its dhcp pool

[balaji.bandi]

I have answered already :

ip dhcp pool call-manager
host 172.16.10.13 255.255.254.0
client-identifier XXXXXXXXXXXXXXXXXX (MAC Address of server)

ip dhcp pool iphone1
host 172.16.10.20 255.255.254.0
client-identifier XXXXXXXXXXXXXXXXXX (MAC Address of iphone1)

The list go bigger and bigger ( so suggest to have external DHCP Server to manage easy).

Like Ms DHCP Server or any Linux based DHCP Server.

https://activedirectorypro.com/configure-dhcp-server/

[BilalButt62333]

thanks a lot just tell me another thing I want to add the mac address of iPphone which is C0:74:AD:39:C6:AB 

but when is add using following command:

client-identifier C0:74:AD:39:C6:AB

it actually saved like this in run config:

client-identifier c074.ad39.c6ab

so is there any issue or is it normal

[balaji.bandi]

yes that normal, i am not much worried, how this saved, is this working is the question ?