Questions on Cisco SF300-24P

Unanswered Question
May 13th, 2011

Hello there,

We are trying to config vlan 10 for data and vlan 20 for voice on the same port - port 1 of swtich SF300-24P to run both data and voice on different vlans.

How can we achieve this?

Do I have to add vlan 10 as an untagged vlan to port 1 and add vlan 20 as an tagged vlan to port 1?

If I do not want to assign the native vlan 1 to port 1, how can I remove it ? The GUI page - assign VLAN to port does not allow to remove it.

Aslo, what mode shall I set up on port 1? General, trunk or access ?

Appreciate your reply and helps.

Thanks,

Tony

I have this problem too.
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Ivor Diedricks Fri, 05/13/2011 - 16:25

Create VLAN 10 and make it untagged on that port. It will be the PVID for that port. Just use the default port mode of Trunk. VLAN 20 is added as a tagged VLAN.

tony08695 Sat, 05/14/2011 - 01:15

Ivor, thanks for your kindly reply.

May I know how to remove VLAN 1 from port1 ?

The default mode for SF300-24P is trunk mode but in another switch 3650, you can have access mode for both voice vlan and data vlan on the same port.

Thanks,

Ivor Diedricks Sun, 05/15/2011 - 22:01

When you create a new VLAN and add it as an untagged VLAN on a trunk port, the default untagged VLAN (VLAN 1) will no longer be present on that port.

tony08695 Tue, 05/17/2011 - 17:46

It seems that Cisco IP phone 7960 or 7940 cannot get the power from SF300 switch.

Is there any workaround to get PoE working for phone 7960 and 7940 when it connects to SF300 switch?

Hard to believe SF300 switch does not support 7960 as we have too many in stock.

Thanks,

tgen-jmolina Tue, 05/17/2011 - 19:42

I am pretty sure that those phone models are old pre-standard CiscoPower.  They don't do PoE at all, so they can't get power from ANY PoE standard switch.

Ditch the phones.  Unless you go guy an old Cisco switch from eBay, you won't be able to power them at all.

tony08695 Tue, 05/17/2011 - 20:16

Jesse, thanks for your response.

We have 40+ IP phone 7960/7940 here. I thought Cisco should release a firmware for 7960/7940 model so it can use on all new released PoE switches.

Sad to see it did not happen. A heavey waste in the investment !!!

Regards,

Ivor Diedricks Tue, 05/17/2011 - 21:08

Tony,

It's not a software thing. When the 7960/7940 phones were released many years ago, the IEEE 802.3af POE standard had not yet been defined, so those phones only supported Cisco pre-standard POE. After the 802.3af POE standard was ratified, thereby delivering POE interoperability between products from multiple vendors, switches and endpoints all started to support the new standard. The 79x1 phones and the new switches all support the standard.

tgen-jmolina Thu, 05/19/2011 - 22:45

Yea, those phones really are kind of old.  It has been years since they stopped selling those.

That being said, your best bet is to research which older switches will do Cisco prestandard power and go buy some off eBay or a gray market dealer.  It would be a shame to throw the phones away.

You need to do the math to figure out if it's cheaper to go with buying some old used gear that will support the phones, getting new phones, or what.

Cisco did drag their feed on doing the 802.3ae PoE implementation, just like they dragged their feet with LLDP-MED, but they did switch over.  Many newer Cisco switches are not supporting prestandard any more at all now.

Such are the perils of vendor-specific proprietary technologies.

emoyers Mon, 05/23/2011 - 14:24

Hi, My name is Eric Moyers. I am a Network Support Engineer in the Cisco Small Business Support Center.

Currently there is no testing from Cisco to certify the use of any third party PoE adapters with any of out Small Business Equipment like the SF300 switches. While there are several out in the market, using third party equipment that has not been certified, can potentially work, they have an equal chance of not working or damaging equipment. Before using such devices I would make sure that they will replace any equipment that is damaged from the use of their products, because Cisco will not.

I am by no means saying that customers can not use third party equipment. I just want all of our customers to have all of the information.

Eric Moyers

Cisco Network Support Engineer

1-866-606-1866

tahequivoice Tue, 05/31/2011 - 07:05

I tried this setup with connecting to a 2901 router instead, and cant get it to work. The phone is not associating to the correct VLAN. It gets the IP from the untagged vlan instead.  I tried it with general access to the router and trunk, but not having any luck, and the PC connected to the phone is not getting an IP either.

David Carr Tue, 05/31/2011 - 07:50

Hey try lldp to get the phones to register to the vlan that they are using.


Here are the steps for setting that up.


Hope it helps you out.

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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tahequivoice Tue, 05/31/2011 - 08:54

Well, I tried it, still didnt work, the phone doesnt show up under neighbors. We finally decided just to run them flat vlan 2. Let the customer get more switches for their data and another HWIC for the router.

Why would Cisco put their name on a switch that isnt compatible with their other equipment?

Ivor Diedricks Tue, 05/31/2011 - 10:26

The phones you're referring to was End-of-Life's back in 2002/2003 and the new standard was ratified at that time. All products Cisco brought to market since that time supported the new standard - the SF300 also conforms to that standard. HEre is a list of Cisco phones supporting the standard. Alll  the SPA phones also support the 802.3af standard.

http://www.cisco.com/en/US/products/hw/phones/ps379/products_qanda_item09186a00808996f3.shtml

tahequivoice Tue, 05/31/2011 - 10:50

Actually the end of sale date on the 7961 phones was January 19 2010.

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps379/end_of_life_notice_c51-520685.html

More specifically what I was referrring to was being able to use 802dot1Q encapsulation so these switches could work together with 2800 and 2900 switches for multiple vlans per interface. For that matter they wont even work with an ASA5505 in a trunked environment.

Ivor Diedricks Tue, 05/31/2011 - 11:02

/* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;}

7960 and 7940 which is what was discussed in this post was EOL'd back in 2002:

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps379/prod_end-of-life_notice09186a0080088a2c.html

802.1Q encapsulation works with all standards-based products, including the ones you've mentioned. Make sure that you set the encapsulation to "dot1q" on the router side:

switchport trunk encapsulation dot1q

Contact the Support org and they will help you through getting this to work.

BTW, the reason why you're not seeing the phone as an LLDP Neighbor is because those older phones do not support LLDP-MED. You have to set the voice VLAN on the phone manually.

tomvend@rymes.com Thu, 12/22/2011 - 07:44

This is an old thread, but for the benefit of anyone searching, a firmware release has been made that allows the 200 and 300 series Small Business switches to support Cisco Inline Power, aka pre-standard POE.

https://supportforums.cisco.com/docs/DOC-18337

This means that those switches will indeed power the CP-7940/CP-7960 and the CP-7940G/CP7960G, even though they do not support the 802.3af standard. A number of older third-party switches also support CIP, but there is no list that I have found that specifies which ones do and do not. The CP-7941/CP-7961 that tahequivoice referred to are different phones (though they look nearly identical) that do support 802.3af out of the box.

Please note, however, that the updated firmware has not been released for all 200 and 300 series switches. As the comments at that link mention, the firmware has yet to be released for the SG200-08P, among others.

As for throwing these phones out because they are "kinda old"? That makes no sense and would be extremely wasteful. The Panoptic adapters mentioned seem to be available for $27.00 each, which really might be the best long-term solution, as it makes them 802.3af compliant (though I have never used one).

Ivor Diedricks Fri, 12/23/2011 - 13:23

All 300 series switches and all 200 series switches support Cisco Inline power except for SG200-08P and the 200E models.These models use a different chipset and software and do not support this capability.

Thanks,

Ivor

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