topic Re: Question regarding SFP in General Topics

Question regarding SFP

dsulli99 — Tue, 17 Apr 2012 16:03:52 GMT

Hi,

I have a quick question regarding the insertion of an SFP Module into a Palo Alto Networks 5050. I have a Finisar FTLX8571D3BCL SFP module that works fine in Ether Port 1/13 (i.e I get link state). From reading the vendor documentation for this module, I am fairly certain that the module is an SFP+ module.

The output of the following command shows the information discerned from the device:

sys.s1.p21.phy: { 'link-partner': { }, 'media': SFP-Plus-Fiber, 'sfp': { 'connector': LC, 'encoding': Reserved, 'identifier': SFP, 'transceiver': , 'vendor-name': FINISAR CORP. , 'vendor-part-number': FTLX8571D3BCL , 'vendor-part-rev': A , }, 'type': Ethernet, }

The problem I am having is when I try to use the module in one of the SFP+ ports (by just moving it over), it is not working (I do not get a link light). It only seems to work when I have the module plugged into one of the SFP ports 1/13, for example. I have a Palo Alto 5050, so ports 21-24 are SFP+.

I have attached a full device configuraiton for my current running configuration. From what I can tell both of these ports are configured exactly the same. Do I need to do something special to get this to work in an SFP+ port? Could anybody potentially help me shed some light on why I cannot get link state when I move the module from port 13-21?

Thank-you so much for your help. I hope you have a wonderful day.

Dan Sullivan

Re: Question regarding SFP

rmonvon — Tue, 17 Apr 2012 16:16:05 GMT

Hi...Can you try setting the link-state on the 10G port to auto instead of up. You currently have it set to:

ethernet1/21 {
        link-speed auto;
        link-duplex auto;
        link-state up;

Thanks.

Re: Question regarding SFP

dsulli99 — Tue, 17 Apr 2012 16:29:14 GMT

Hi,

This was actually the default. I deterministically set it to up; I changed it back to auto, and this made no difference. My config after a commit now looks like this for that particular interface.

ethernet1/21 {

link-speed auto;

link-duplex auto;

link-state auto;

layer2;

}

The link light is out, however if I move the same fiber and SFP to 1/13, it lights up immediately.

Thank-you so much,

Dan Sullivan

Re: Question regarding SFP

rmonvon — Tue, 17 Apr 2012 16:39:40 GMT

Dan...What device is on the other end of the fiber? When you connected to port 1/13 and it came up, this implies the other end is a 1G port not 10G.

Do you have another finisar FTLX8571D3BCL transceiver to test with? You can put it in port 1/22 and connect to port 1/21 back-to-back to test.

Thanks.

Re: Question regarding SFP

dsulli99 — Tue, 17 Apr 2012 18:13:44 GMT

Hi, There,

You bring up an interesting point. I think this may be my issue, actually. I will report back

Dan Sullivan