Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
About Tobias_Kuhnert
Tobias_Kuhnert
Here to help
Member since Apr 22, 2018
Aug 17 2023
Community Record
13
Posts
0
Kudos
0
Solutions
Badges
Apr 3 2023
7:00 AM
Hello, today i noticed something regarding the stacking cables (MA-CBL-40G). For a while we had issues creating stacks... the stacking ports would not come up in 9 out of 10 tries/reboots. Finally, i think i found the cause: This must be due to some old stacking cables our customer had. I have cables, which are labeled with "MA-CBL-40G-50CM 600-22120" - these are the ones, which do not work most times in our MS410-16 switches. And i have cables, which are labeled with "MA-CBL-40G-50CM 600-22120-A" - these cables work just fine with the MS410-16. I was just wondering if there are really two different revisions of the cables... i've never read anything about this so far. Can someone confirm this? Or had similar issues with stacking? Best regads Tobi
... View more
Jan 22 2019
2:18 AM
Thanks for your answers. i think we'll stick to limit the communication at least to the described UDP port ranges. The problem with the manual port forwarding is that i can only configure 1 public IP... If we have a outage of the primary ISP in the data center then VPN wil not form over the backup ISP, right? Thanks
... View more
Jan 18 2019
2:03 AM
Hi, I currently have a deployment with about 40 sites connecting to a data center via internet and MPLS. Our data center MX is behind a Sophos UTM in one armed concentrator mode. On the Sophos UTM i created all the firewall rules for the ports, which the MX in dashboard under help -> firewall info is suggesting, but it seems that auto-vpn in automatic mode is not working properly. I can also see in the logs of the UTM that the MX is trying to communicate over a lot of UDP highports - i guess this is related to the "automatic mode". However, I'm not a big fan of those "any-any" firewall rules, so i am wondering if there is a recommendation for what ports are needed to be open from the MX to the internet and what ports may be needed to be forwarded from the internet to the MX appliance. i couldn't find any clear statement in the documentation on that. Thank you. Best regards Tobi
... View more
Aug 2 2018
7:16 AM
I can tell that we have a notebook, which wasn't connected to the network for the last 6 weeks at least and it still shows a public IPv6 address. We also checked with wireshark for any DHCPv6 traffic, but no router does assign addresses (as expected now).
... View more
Aug 2 2018
6:04 AM
Hi, i'm seeing public IPv6 addresses for some clients in my network, but if i run a "ipconfig -all" on that client, the IP address is not assigned to the client. So i'm wondering, how long does the dashboard store IP address information for clients? There might be some time in the past where clients could have gotten a public IPv6 address from our router, but that was almost half a year ago... Even if i click "forget client" only the traffic statistics are cleared... the public IPv6 address is still shown in dashboard. Thanks Best regards Tobi
... View more
© 2025 Cisco Systems, Inc.
