C6807-XL SUP2T w/ C6800-32P10G w/ WS-X6724-SFP CFC w/ WS-X6748-SFP CFC

[a12288]

All.

By reading various sources of document, I can confirm that C6907-XL chassis with SUP2T can support 

1) C6800-32P10G

and

2) X6724 / X6748-SFP CFC.

I would like to know / confirm has anyone have the above actual config running in production? If so, is there any potential / unexpected issues / problems? We simply cannot test the above config in the Lab. Thanks.

Leo

[Leo Laohoo]

1) C6800-32P10G

32 ports x 10 Gbps = 320 Gbps/slot.  

The Sup2T can support up to 220 Gbps.  So this means this line card cannot support "wire speed", however, wait a few more months (April 2016) and Sup6T will be announced.  The Sup6T will support up to 440 Gbps per slot and gives full potential to the 32 port (10 Gbps) line card.

2) X6724 / X6748-SFP CFC.

Personally, I wouldn't be bothered migrating this line card to the 6807 because it is such a waste of "real estate".  A cheaper alternative would be to get two (2) WS-C3750X-24S or two (2) WS-C3850-24S and connect the stack to the 6807 using one/two/three/four 10 Gbps ports.

[a12288]

Leo. I am not too concerned about the speed / performance at this moment, rather much like to confirm with the compatibility now, especially I am going to have 6800 DC4 LC and 6700 CFC LC on the same chassis.  There is less value to us to invest on 1G LC I would rather migrate them to 10G gradually.

Leo

[Leo Laohoo]

There is less value to us to invest on 1G LC I would rather migrate them to 10G gradually.

1 Gbps will still be there but the "argument" will be to home them to a chassis dedicated to 10-, 40- or 100 Gbps or not.  This is why I'm recommending homing the 1 Gbps links to a separate appliance (like the WS-C3750X-24S and/or WS-C3850-24S).   

Another thing, what about the remote management ports?  They're 100 Mbps.  Again, a separate appliance will give you financial benefit compared to using a dedicated slot in the chassis to do something which can be done by a few links. 

I hope this helps.

[Jon Marshall]

I haven't used that setup but as far as I know based on experience with 6500s there should be no compatibility problems.

The CFC modules will not interfere with the DFC modules in terms of forwarding performance.

The only thing that would be an issue is if your current CFC modules were running DFCs but not the version 4 DFCs.

So can't say for sure but I would be very surprised if you had problems.

Jon

[a12288]

Jon.

We won't purchase DCF4 on 67xx 1G LCs, my goal is to ensure 6724/48 CFC 1G LC can coexist with 68xx 32P10G in C6807-XL w/ SUP2T, and migrate 1G from 6724/48 CFC to 6800-32P DFC4 gradually.

Leo

[Jon Marshall]

Leo

Sorry, it may be the way I worded it but I understand you aren't going to purchase DFC4's, I was just saying that if your 67xx had DFCs but they weren't DFC4's then that would be an issue.

But they don't.

CFC modules should not have an effect on DFC modules.

The only thing to bear in mind obviously is that with the 67xx modules the supervisor has to do the packet lookup but as you are not concerned with performance as such that should not be an issue.

Jon

[Leo Laohoo]

• Cisco Catalyst 6800 Series Supervisor Engine 6T Data Sheet
• Release Notes for Cisco IOS Release 15.3(1)SY