07-17-2012 01:44 PM - edited 03-07-2019 07:49 AM
Hi,
We have a problem with two switches 2960 and router 2901. we have a trunk between switch and router. In router we have a subinterface g0/1.80 for voip and g0/1.90 for data. we show the config of interface and dhcp server router.
Dhcp works ok for interface f0/3 only for data. When we conected phone never is assigned ip of range 10.161.80.0. and assgned 10.161.90.0. Awesome we could doing call becouse we can connect to default pbx of philips.
When only config at interface with vlan 80 like f0/2, never assigned ip.
Whe did debug in router and we think the problem is in redline below.
At switch we can´t any config of dhcp.
I try to red this document before to go to bed . Its is posible that I can find the solution but Anyone can help me please???
http://www.cisco.com/en/US/docs/ios-xml/ios/ipaddr_dhcp/configuration/15-1mt/dhcp-15-1mt-book.pdf
Anyone can help me please???
Regards.
config Router 2901
_______________________________
ip dhcp pool datos-pool
network 10.161.90.0 255.255.254.0
dns-server 10.161.1.20 10.161.1.22
default-router 10.161.90.2
!
ip dhcp pool voz-pool
network 10.161.80.0 255.255.254.0
option 66 ascii tftp://10.161.17.11 >>>>>>>><<this option is for philips phone.
default-router 10.161.80.2
____________________________-
config switch
interface FastEthernet0/1>>>>>>>>>>>>>>>>>>>>>>>>><trunk to router
description enlace contra SWAdmin_2
switchport mode trunk
!
interface FastEthernet0/2
switchport voice vlan 80>>>>>>>>>>>>>>><vlan voip
spanning-tree portfast
!
interface FastEthernet0/3
switchport access vlan 90>>>>>>>>>>>>>>><vlan data
switchport voice vlan 80
spanning-tree portfast
ul 17 20:26:55.938: DHCPD: checking for expired leases.
Jul 17 20:28:29.690: DHCPD: client's VPN is .
Jul 17 20:28:29.690: DHCPD: No option 125
Jul 17 20:28:29.690: DHCPD: Sending notification of DISCOVER:
Jul 17 20:28:29.690: DHCPD: htype 1 chaddr 0060.b957.1f3d
Jul 17 20:28:29.690: DHCPD: remote id 020a00000aa15a020100005a
Jul 17 20:28:29.690: DHCPD: circuit id 00000000
Jul 17 20:28:29.690: DHCPD: DHCPDISCOVER received from client 0100.60b9.571f.3d on interface GigabitEthernet0/1.90.
Jul 17 20:28:29.690: DHCPD: Seeing if there is an internally specified pool class:
Jul 17 20:28:29.690: DHCPD: htype 1 chaddr 0060.b957.1f3d
Jul 17 20:28:29.690: DHCPD: remote id 020a00000aa15a020100005a
Jul 17 20:28:29.690: DHCPD: circuit id 00000000
Jul 17 20:28:29.690: DHCPD: Found previous server binding
Jul 17 20:28:29.690: DHCPD: Sending DHCPOFFER to client 0100.60b9.571f.3d (10.161.90.78).
Jul 17 20:28:29.690: DHCPD: no option 125
Jul 17 20:28:29.690: DHCPD: ARP entry exists (10.161.90.78, 0060.b957.1f3d).
Jul 17 20:28:29.690: DHCPD: unicasting BOOTREPLY to client 0060.b957.1f3d (10.161.90.78).
Jul 17 20:28:29.690: DHCPD: client's VPN is .
Jul 17 20:28:29.690: DHCPD: No option 125
Jul 17 20:28:29.690: DHCPD: DHCPREQUEST received from client 0100.60b9.571f.3d.
Jul 17 20:28:29.690: DHCPD: Sending notification of ASSIGNMENT:
Jul 17 20:28:29.690: DHCPD: address 10.161.90.78 mask 255.255.254.0
Jul 17 20:28:29.690: DHCPD: htype 1 chaddr 0060.b957.1f3d
Jul 17 20:28:29.690: DHCPD: lease time remaining (secs) = 86400
Jul 17 20:28:29.690: DHCPD: Can't find any hostname to update
Jul 17 20:28:29.690: DHCPD: Sending DHCPACK to client 0100.60b9.571f.3d (10.161.90.78).
Jul 17 20:28:29.690: DHCPD: no option 125
Jul 17 20:28:29.690: DHCPD: ARP entry exists (10.161.90.78, 0060.b957.1f3d).
Jul 17 20:28:29.690: DHCPD: unicasting BOOTREPLY to client 0060.b957.1f3d (10.161.90.78).
Jul 17 20:28:55.938: DHCPD: checking for expired leases.
Jul 17 20:30:55.938: DHCPD: checking for expired leases.
Solved! Go to Solution.
07-18-2012 05:31 AM
Hi Rafael,
Could you try this config please
Router conf:
ip dhcp pool voz-pool
network 10.161.80.0 255.255.254.0
option 150 10.161.17.11 - voice server?
default-router 10.161.80.254
interface GigabitEthernet0/1
description --- trunk to (2960) ---
no ip address
ip verify unicast reverse-path
no ip redirects
no ip unreachables
no ip proxy-arp
load-interval 30
duplex auto
speed auto
interface GigabitEthernet0/1.80
description --- VoIP (10.161.80.0/24) ---
encapsulation dot1Q 80
ip address 10.161.80.254 255.255.255.0
Switch conf
interface FastEthernet0/1
switchport trunk encapsulation dot1q (on 2960 enabled by default)
switchport trunk allowed vlan 1,80,90
switchport mode trunk
switchport nonegotiate
load-interval 30
interface FastEthernet0/3
switchport access vlan 90
switchport mode access
switchport voice vlan 80
load-interval 30
spanning-tree portfast
spanning-tree bpduguard enable
07-17-2012 04:46 PM
Hi Rafael,
Your switch config for int f0/2 is the problem
This is your existing config
!
interface FastEthernet0/2
switchport voice vlan 80>>>>>>>>>>>>>>>
spanning-tree portfast
!
If this port is only to support a phone please reconfig to be an access port in vlan 80
!
interface FastEthernet0/2
shut
desc *** PHONE ONLY PORT VLAN 80 ***
no switchport voice vlan 80
switchport access vlan 80
spanning-tree portfast
no shut
!
See if that works
Regards,
Alex.
Please rate useful posts.
07-18-2012 12:21 AM
Hi Alex,
thanks for your soon answer. It´s works ok but the problem is that I need vlan data too in this port.
Internet 10.161.80.3 0 0060.b957.1bc3 ARPA GigabitEthernet0/1.80
You think that the we need to put this command in switch???
SHRRHH_3(config)#ip dhcp-client ?
broadcast-flag Set the broadcast flag
default-router Set DHCP default router related information
network-discovery Configure parameters for network discovery
SHRRHH_3(config)#ip dhcp-se
SHRRHH_3(config)#ip dhcp-server ?
Hostname or A.B.C.D IP address or Name of DHCP server
SHRRHH_3(config)#ip dhcp-server
__________________________________-
In other customer, we have this config and works ok.
ip dhcp pool TOIP
network 10.166.200.0 255.255.248.0
default-router 10.166.200.1
option 150 ip 10.166.200.2
dns-server 10.166.20.35 10.166.20.49
interface GigabitEthernet1/0/2
switchport access vlan 100
switchport voice vlan 200
switchport port-security maximum 2
srr-queue bandwidth share 1 30 35 5
queue-set 2
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
spanning-tree guard root
service-policy input AUTOQOS-SRND4-CISCOPHONE-POLICY
Regards.
07-18-2012 12:25 AM
Hi,
in this case just redo your intial config but add this:
switchport access vlan x where vlan x is the data vlan
Regards.
Alain.
Don't forget to rate helpful posts.
07-18-2012 02:52 AM
Rafael,
The normal config for the kind of port you want would be like this:-
!
interface FastEthernet0/3
desc *** PHONE AND DATA ***
switchport access vlan 90
switchport voice vlan 80
spanning-tree portfast
My question to you is how the phone selects the VOICE vlan.
The VOICE vlan uses 802.1Q vlan taging in the ethernet frames
Cisco AUTOQOS is used for Cisco VOIP (CUCM/CUCME) PBX solutions
Cisco phones use CDP neighbour to find their voice vlan number
Do you enter this manually on the phone config ?
On Nortel/Avaya & Alcatel the Voice VLAN discovery can be part of the DHCP process from the phone.
Phone boot on the DATA vlan, obtain a DATA VLAN ip address.
Other DHCP parameters tell the phone to reset and use 802.1Q tagging to to next find an address on the VOIP Vlan.
I have no experience with Philips IP/PBXs so I dont know their process.
Regards,
Alex.
Please rate useful posts.
07-18-2012 05:31 AM
Hi Rafael,
Could you try this config please
Router conf:
ip dhcp pool voz-pool
network 10.161.80.0 255.255.254.0
option 150 10.161.17.11 - voice server?
default-router 10.161.80.254
interface GigabitEthernet0/1
description --- trunk to (2960) ---
no ip address
ip verify unicast reverse-path
no ip redirects
no ip unreachables
no ip proxy-arp
load-interval 30
duplex auto
speed auto
interface GigabitEthernet0/1.80
description --- VoIP (10.161.80.0/24) ---
encapsulation dot1Q 80
ip address 10.161.80.254 255.255.255.0
Switch conf
interface FastEthernet0/1
switchport trunk encapsulation dot1q (on 2960 enabled by default)
switchport trunk allowed vlan 1,80,90
switchport mode trunk
switchport nonegotiate
load-interval 30
interface FastEthernet0/3
switchport access vlan 90
switchport mode access
switchport voice vlan 80
load-interval 30
spanning-tree portfast
spanning-tree bpduguard enable
07-18-2012 02:14 PM
Hi Guys
Thanks for your help.We solved the problem like I show you.
For Nec phone we need to appy option 66. This phone don´t work like a cisco phone. Don´t works with cdp.
In switchport of the phone we put Vlan 90 and works!!!!!!!!! only with this change. With command switchport voice vlan x is for cisco phone or Alcatel-Avaya. Nec don´t works with this config.
Dhcp in Router::::::::::::::::::::::::::::::::::::::::::::::.
ip dhcp pool data-pool
network 10.161.90.0 255.255.254.0
dns-server 10.161.1.20 10.161.1.22
default-router 10.161.90.2
!
ip dhcp pool voip-pool
network 10.161.80.0 255.255.254.0
option 66 ascii tftp://10.161.17.11
default-router 10.161.80.2
dns-server 10.161.1.20 10.161.1.22
Config in switch::::::::::::::::::::::::::::::::::::::::::
interface FastEthernet0/3
switchport trunk native vlan 80
switchport trunk allowed vlan 80-90
switchport mode trunk
Internet 10.161.80.3 1 0060.b9 ARPA GigabitEthernet0/1.80
Internet 10.161.90.6 4 000f.b0 ARPA GigabitEthernet0/1.90
Thank you very much.
Cheers.
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