Comments on: VTP Mode and Service Config for HP and IBM Cisco Blade Switches http://www.bladevault.info/2008/02/05/vtp-mode-and-service-config-for-hp-and-ibm-cisco-blade-switches/ Tips, Tricks, and Gotchas for IBM and HP Blades & Servers, Virtualization Products, and Storage Thu, 04 Dec 2008 02:50:05 +0000 http://wordpress.org/?v=2.5.1 By: Joe http://www.bladevault.info/2008/02/05/vtp-mode-and-service-config-for-hp-and-ibm-cisco-blade-switches/#comment-49 Joe Thu, 13 Mar 2008 21:19:43 +0000 http://bladevault.info/?p=11#comment-49 Any word from your cisco guy on the service config setting? Any word from your cisco guy on the service config setting?

]]> By: Aaron Delp http://www.bladevault.info/2008/02/05/vtp-mode-and-service-config-for-hp-and-ibm-cisco-blade-switches/#comment-36 Aaron Delp Tue, 04 Mar 2008 02:52:02 +0000 http://bladevault.info/?p=11#comment-36 A comment from the old site: http://aarondelp.blogspot.com/2008/02/vtp-mode-and-service-config-for-hp-and.html I have moved the comment over here and I will reply: Anonymous said: Hi Aaron, Do you know if it's possible to change the service config setting to look for a specific file on a specific server instead of broadcasting? My response: Good Question! I'm not sure but I will check. My Cisco guy is actually at the hospital because his wife is having their first baby today. It may be a few days but I'll get back to you. - Aaron A comment from the old site: http://aarondelp.blogspot.com/2008/02/vtp-mode-and-service-config-for-hp-and.html

I have moved the comment over here and I will reply:

Anonymous said:

Hi Aaron,

Do you know if it’s possible to change the service config setting to look for a specific file on a specific server instead of broadcasting?

My response: Good Question! I’m not sure but I will check. My Cisco guy is actually at the hospital because his wife is having their first baby today. It may be a few days but I’ll get back to you.

- Aaron

]]> By: Aaron Delp http://www.bladevault.info/2008/02/05/vtp-mode-and-service-config-for-hp-and-ibm-cisco-blade-switches/#comment-34 Aaron Delp Mon, 25 Feb 2008 02:36:22 +0000 http://bladevault.info/?p=11#comment-34 Tim! I'm honored!! I hope Alabama went well. Thanks for posting! Tim! I’m honored!! I hope Alabama went well. Thanks for posting!

]]> By: TimH http://www.bladevault.info/2008/02/05/vtp-mode-and-service-config-for-hp-and-ibm-cisco-blade-switches/#comment-33 TimH Sun, 24 Feb 2008 02:22:19 +0000 http://bladevault.info/?p=11#comment-33 I've been told that best practice is to power up the switch on the bench (in the chassis) without it being connected to the network and make sure that it is in client mode. Once you connect it to the network and join the VTP domain, you can change it to the proper mode as per design. I know of one occasion where the VTP domain was stepped on by a new switch in server mode as it was introduced into an existing evironment. I don't know how the engineer managed to do it but a certain major NY newspaper was not happy. -Tim- I’ve been told that best practice is to power up the switch on the bench (in the chassis) without it being connected to the network and make sure that it is in client mode. Once you connect it to the network and join the VTP domain, you can change it to the proper mode as per design.

I know of one occasion where the VTP domain was stepped on by a new switch in server mode as it was introduced into an existing evironment. I don’t know how the engineer managed to do it but a certain major NY newspaper was not happy.

-Tim-

]]> By: Aaron Delp http://www.bladevault.info/2008/02/05/vtp-mode-and-service-config-for-hp-and-ibm-cisco-blade-switches/#comment-12 Aaron Delp Wed, 06 Feb 2008 00:49:00 +0000 http://bladevault.info/?p=11#comment-12 Hey Mike! It's Aaron by the way ;)<br/><br/>You will find out very quickly that the extent of my Cisco knowledge doesn't extend too far beyond the basic configuration of the switches for IBM and HP Blades. I'm sorry if it wasn't clear in the way I presented it. I just wanted to make sure people out there that aren't familiar with VTP make sure they don't introduce a switch with a configuration that could harm an existing environment.<br/><br/>You are completely correct in your interpretation and I love the idea of "storing" the VTP on a switch that is in transparent mode. I will ask the Cisco guys in our company if they do this and I will certainly recommend this to clients!<br/><br/>Thanks again for coming by!<br/><br/>Aaron Hey Mike! It’s Aaron by the way ;)

You will find out very quickly that the extent of my Cisco knowledge doesn’t extend too far beyond the basic configuration of the switches for IBM and HP Blades. I’m sorry if it wasn’t clear in the way I presented it. I just wanted to make sure people out there that aren’t familiar with VTP make sure they don’t introduce a switch with a configuration that could harm an existing environment.

You are completely correct in your interpretation and I love the idea of “storing” the VTP on a switch that is in transparent mode. I will ask the Cisco guys in our company if they do this and I will certainly recommend this to clients!

Thanks again for coming by!

Aaron

]]> By: Mike http://www.bladevault.info/2008/02/05/vtp-mode-and-service-config-for-hp-and-ibm-cisco-blade-switches/#comment-11 Mike Tue, 05 Feb 2008 23:08:00 +0000 http://bladevault.info/?p=11#comment-11 Hi Scott,<br/><br/>I'm not sure if its the way you explained VTP, but transparent mode will still forward VTP advertisements to other switches. It just won't act upon them for itself.<br/><br/>So you have a VTP server then a VTP Transparent switch, then a VTP client (assuming Domain & Password match) then the client will still get VTP advertisements from the VTP server through the transparent server. <br/><br/>I was talking to a guy last week that always leaves 1 switch in transparent mode and duplicates his VTP server config to it manually so if something happens to his VTP server he can just switch his transparent into Server mode. If someone threw a rouge VTP server into the mix with a higher revision and set everyone back to only Vlan 1 he wouldn't be screwed. <br/><br/>Maybe I didn't understand what you were explaining. Love your blog, I learn a ton!<br/><br/>-Mike Hi Scott,

I’m not sure if its the way you explained VTP, but transparent mode will still forward VTP advertisements to other switches. It just won’t act upon them for itself.

So you have a VTP server then a VTP Transparent switch, then a VTP client (assuming Domain & Password match) then the client will still get VTP advertisements from the VTP server through the transparent server.

I was talking to a guy last week that always leaves 1 switch in transparent mode and duplicates his VTP server config to it manually so if something happens to his VTP server he can just switch his transparent into Server mode. If someone threw a rouge VTP server into the mix with a higher revision and set everyone back to only Vlan 1 he wouldn’t be screwed.

Maybe I didn’t understand what you were explaining. Love your blog, I learn a ton!

-Mike

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