CCR1072 stops responding to traffic via some SFP+ cages

Hardware MikroTik hardware general
1

Hi All

I have run into a bit of an odd one.

on the CCR1072 as you all know there are 8 SFP+ cages, I have configured a /30 between the CCR1072 and a Cisco 7606, I am using a 1Gbps SFP and I have set both the CCR and the 7606 to 1Gbps.

If I then to a rapid ping at around 6000 to 7000 pings the CCR just stops forwarding traffic, you can disable and re-enable the interface, remove and reinsert the SFP but it will not start forwarding traffic again until the CCR is rebooted.

This happens at 1500 and 9000 MTU. I swopped fibre leads, SFP’s and ports on the Cisco 7606 exactly the same every time.

Looking at the grouping of the SFP’s it seems and I may be wrong, that the SFP+ ports on the CCR1072 are grouped, 2 per controller maybe or 4 per Controller? If i move the SFP from port 1 and move it to port 7 and change the IP address mapping from port 1 to 7 then all works as expected, in this case 2 ping sessions from the 7606 at 9000 MTU for 100k packets each, no problem.

I then moved from port 5 to port 3 and ran the same ping test again ping fails, and when I am connected to port 4, but port 6 an 8 also work as expected.

So in summary, port 1 to 4 fails to forward traffic after a number of high speed pings, the only way I seem to be able to restore this is by rebooting the CCR1072, however port 5 to 8 work just fine. I assume the same hardware is being used in the SFP+ ports on the CCR1072, so is this some strange software issue? (this happens on the out of the box 6.30.2 and the latest 6.33.3 software) or de we have a faulty unit?

2

Have you tried forcing the speed of the SPF to 1Gbit rather than auto?
I’ve seen a couple of posts about needing to do that when using a 1gbit spf in a spf+ port.

3

Hi

Both the CCR1072 and the Cisco 7606 has been forced to 1Gbps

4

The unit is forced to 1G

5

2morrow i’ll connect ccr 1072 to huawei switch with 1g module and further to ccr 1036. Will update in few days

6

Just put of curiosity, what type of linecard and SFP are you using on the 7606? We don’t have a 7606 in our lab, but we do have a Cisco 6506-E chassis and CCR1072 in our lab and both the 7600 and 6500 chassis share linecards. May try this test when I have a minute and see what happens.

7

Hi

the line card was a WS-X6748-SFP
but also tried via the WS-SUP720-3BXL

Thanks for also having a look

8

i’m unable to connect ccr 1072…huawei…ccr 1036. unable to ping huawei from ccr 1072 on 1g modules. Fiddled with all settings auto of on low high but unable to ping. Tomorrow I’ll confirm. On 10g modules things are running fine. The same modules are working on all the series of ccrs. Link is up on both ends.

9

That is basically what I was seeing but only on SPF+ ports 1 to 4
link up, spf indicator light does not flash at all, no ping

on the other ports the light flashes with activity and I can ping

10

1g sfp are connecting setting are auto-neg = off sfp rate select=high
tested on sfp2,3,4,