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thanks, Avilov, I think you are right, if I use LC connector, at the other end of the cable, can I use the the same connect, so the topology remains the same from Juction point to distribution layer?

we have two core switches 6509 need to be upgrade to 6509/sup720 and a module with SFP. 6509------junction point----distribution layer switches; where ----- represents a fiber cable. Since the original module use old fiber connector--one end ST and the other end is SC, and the new 6509 with...

viper, you know what, I did nothing to do with vlan 1003. so what is the problem? thank you! mel.

after typing: #vlan database #vtp v2-mode when i type exit: it says "vlan 1003 parent VLAN missing, APPLY failed." and i checked Vlan 1003, it a "tr" type. Beiside my server and client cannot communicate, is it because the above problem? thank you!

Hi, Cluebird thanks, but how can I fix it?

Thanks guys, you are really helpful.

Hello, thanks in advance, I used CiscoWorks check the discrepencies, and I found the following information, But i couldnt figure out what they mean? would you please give me some ideas? thanks Mel =============== This Trunk Link has ports with mismatching active VLAN sets. Port 2/49 on device...

we have WS-X6724-spf module on our 6500 swich. we'll use two kinds of transceivers-- GLC-SX-MM and GLC-LH-SM; We'll use fiber to connect like this: 6500--fiber junction point--4000; where two links are all fibers. my questin is between 6500 and fiber junction point, what kind of cable sould i...

I'll start a new thread. Please look at it. thanks, M.B.

Youcandoit, thanks, How can I identify a calbe is a LX/SX/LH? when I plug it into a transceiver, is there any order as to which socket is used for which end? best m.

thanks in advance. Can I tell whether a fiber cable is LH/LX/SX, by any phisical features, such as color or any identity? thanks, M.

Hi, I am using a 3524 now. I am trying to create a Vlan, but when I went to global configuration, and typed vlan 900. it said, What is the problem? thanks. mel =================== 3524XL(config)#vlan 900 ^ % Invalid input detected at '^' marker. 3524XL(config)#...

youcandoit: You are absolutely right. all the things you're talking about fit the fact that i observed. We have about 4 4900 switches at the distribution layer and a 6500 at core. So the junction point is kind of relay, and the ethernet on it remains unchanged, except the speed is faster. is...

Thanks, I am not sure what that stand for, all I know is that there are boxes that right above our distribution layer switches and have label called LIU-XXX where XXX is the number used by our own. The boxes have many fiber-like calbe connected to our distribtion layer switches which 4900...

Hi, there, I have some question about Line Interface Unit, some questions are pretty foundamental. would you please post some link that I can read, I couldnt find some on the Internet. thanks, mel.