10-02-2012 01:00 PM
Hello:
its been a while, previously I got some great help here with setting up a bunch of SF302-8P switches for use with Avaya phones in this thread.
https://supportforums.cisco.com/message/3585473#3585473
One of the things we found with the SF302-8P switches and Avaya Phones with Plantronics headsets, is that the power brick that powers the unit and provides enough Juice for the POE produces an Electromagnetic Hum that the plantronic headset picks up like an antenna and channels right into the calls, the hum gets worse the closer you get to the power brick with the headset.
As per Plantronix, this was the best sheilded headset cable they sold, and In an effort to eliminate this hum which is very noticable to the clients calling in, we purchased external power supplies for the phones and several of the Cisco SF302-8 switches, upgraded them to the newest frimware and set them up the same way we had done the previous switches.
Unfortunately we can't get this box to pull a DHCP address for the Phone, although it appears to be pulling DHCP for PC's hooked up to it. We are seeing this behavior on this specific version of the firmware on both the SF302-08 and SF302-08P switches and I would love some help finding out why.
Vlan's
1 Default Data for East Side of the Building
100 Default Data for West Side of the Building
400 Avaya DHCP
500 Management VLAN
Here is the running config on the swith
config-file-header
ACCESS-302-39
v1.2.7.76 / R750_NIK_1_2_584_002
CLI v1.0
file SSD indicator excluded
@
vlan database
vlan 100,400,500
exit
voice vlan oui-table add 0001e3 Siemens_AG_phone________
voice vlan oui-table add 00036b Cisco_phone_____________
voice vlan oui-table add 00096e Avaya___________________
voice vlan oui-table add 000fe2 H3C_Aolynk______________
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone___________
voice vlan oui-table add 00e075 Polycom/Veritel_phone___
voice vlan oui-table add 00e0bb 3Com_phone______________
hostname ACCESS-302-39
!
interface vlan 100
name "West Data"
!
interface vlan 400
name "Avaya DHCP"
!
interface vlan 500
name Management
ip address 192.168.100.39 255.255.255.0
no ip address dhcp
!
interface fastethernet1
switchport trunk allowed vlan add 400
!
interface fastethernet2
switchport trunk allowed vlan add 400
!
interface fastethernet3
switchport trunk allowed vlan add 400
!
interface fastethernet4
switchport trunk allowed vlan add 400
!
interface fastethernet5
switchport trunk allowed vlan add 400
!
interface fastethernet6
switchport trunk allowed vlan add 400
!
interface fastethernet7
switchport trunk allowed vlan add 400
!
interface fastethernet8
switchport trunk allowed vlan add 400
!
interface gigabitethernet1
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 100,400,500
macro description switch
!next command is internal.
macro auto smartport dynamic_type switch
!
interface gigabitethernet2
switchport mode access
switchport access vlan 500
!
ip default-gateway 192.168.100.1
10-02-2012 01:58 PM
hmm.,. odd, this may be a phone issue, We plugged in several after the first and they would not pull DHCP addresses, and then tried a known good phone, and the port came up, after the port came up we tried all of the failed phones that and with the exception of the very first phone all came up correctly.
10-02-2012 06:34 PM
Hi Joshua
Could be interesting to try disabling CDP on the switch and seeing if you can use LLDP-MED from avaya to inform the switch what is the voice VLAN.
here's a reference by Tom Watts on how to setup LLDP-MED
https://supportforums.cisco.com/docs/DOC-27005
Tom also wrote another post on how to setup the telephony OUI method for the switch to setup a voice vlan when a particular MAC OUI is attcahed to a switch port.
https://supportforums.cisco.com/docs/DOC-27006
regards Dave
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide