Ethernet Fabric (VDX, CNA)

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Occasional Contributor
Posts: 9
Registered: ‎09-10-2013

VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

Any help would be greatly appreciated. Thanks in advance!

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

Hi,

     Max is 30Km using ER optics and 10Km for LR.

Extract is from Network OS Administrator Guide 3.0.1 and same is true for 3.0.0

Long distance ISL guidelines and restrictions

Consider the following when configuring long distance ISL:

Long distance ISL is only supported on 10G interfaces.

Edge ports can not be configured with DCB maps.

Edge ports and port groups with long distance links can not use the fcoeport default command.

A maximum of three PFCs can be supported on a long distance ISL configured platform. By default, PFC is enabled by class 3 and 7.

All the ports on the platform are rebooted when configuring a port for long-distance.

For 2Km, 5Km, 10Km long-distance, use Brocade-supported long range (LR) optics for direct connectivity.

For 30Km long-distance, use Brocade-supported extended range (ER) optics for direct connectivity.

To configure a long distance ISL port, use the long-distance-isl command in interface configuration mode. Refer to theNetwork OS Command Reference for complete details. The following example sets port 1/0/2 to support long distance ISL up to 30Km.

Example

switch(conf-if-te-1/0/2)# long-distance-isl 30000


Thanks

Michael.

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

Hi Samsuddin,

     Just saw you marked the other post as helpfull (and thanks for putting the post into the correct forum) - is there any other info that you need?


Thanks

Michael.

Occasional Contributor
Posts: 9
Registered: ‎09-10-2013

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

"switch(conf-if-te-1/0/2)# long-distance-isl 30000" is this command supported by VDX6720-24 switch?

what is the default ISL distance for this switch?

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

Hi,

Yes the command is supported on the VDX6720-24. See next post (VDX 6720-60 and up only.

For normal ISL's, no commands is needed.  Distance is based on the type of transciver you are using. So a 10g-SR is 300m

Thanks

Michael.

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

Hold on - just doubled checked the manual.  It looks like the 6720-24 is NOT supported for distance ISL.  Strange as 6720-24 and 6720-60 use the same chip (-60 just has more of them).

See the attached table.

ISL.gif

Frequent Contributor
Posts: 155
Registered: ‎09-07-2010

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

Please see the Metro VCS section in the latest NOS 4.0.0 Admin guide . You will see the 6740 listed in there .

http://www.brocade.com/downloads/documents/html_product_manuals/NOS_AG_400/wwhelp/wwhimpl/js/html/wwhelp.htm#href=CH_MetroVCS.13.3.html

-Annie.

Occasional Contributor
Posts: 9
Registered: ‎09-10-2013

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

Can I setup 1000KM distance between VDX6720-24 and VDX8770 switch ?

Valued Contributor
Posts: 931
Registered: ‎12-30-2009

Re: VDX 6720-24(NOS 3.0.0): what is the maximum ISL distance supported by this switch?

If you've read the doc referred to and more specifically the part for Metro VCS over long distance ISL's

http://www.brocade.com/downloads/documents/html_product_manuals/NOS_AG_400/wwhelp/wwhimpl/js/html/wwhelp.htm#href=CH_MetroVCS.13.3.html#1099011

You would have known that 1000KM is more than the current max of 30KM.

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