About Defututus

Defututus · 01-16-2025

Hello. During the investigation of some communication issues inside the SCADA system I checked the ASIC drops by issuing command "show platform hardware fed switch active fwd-asic drops exceptions" on our core switch which is also configured as the r...

Defututus · 02-29-2024

Hello. I have a question:I have 2 trunk ports in port-channel with LACP. One of them is down. But what happens when this interface goes up. My understanding is that when LACP negotiation is finished the traffic start passing over the link, but some V...

Defututus · 04-28-2021

Hi there,I'm facing an issue most probably with the spanning-tree loops causing broadcast storm.Please see the attached picture for more details.If I connect switch Stratix5700#1 (Rockwell version of Cisco IE2000) with only one trunk, there is ot iss...

Defututus · 05-30-2024

it could be device-tracking. If you need it try these policiesPolicy for trunks:device-tracking policy DISABLE-IP-TRACKINGtracking disabletrusted-portdevice-role switchPolicy for access ports:device-tracking policy IP-TRACKINGlimit address-count 2sec...

Defututus · 06-30-2023

The load balancing method depends on configured load balancing hash which is configured per box in your case. I'm not sure but I think that the default one is src-mac in case of C9300. It means that the speed will NOT exceed 1Gbit for single VM if is...

Defututus · 01-13-2023

Its L2 multicast. It will be forwarded/flooded if the switch does not support cdp

Defututus · 01-13-2023

Hello. Not sure if I got your point. It is not necessary to connect both DC inputs to the same power supply. But the best practice is to do so. You will not have to deal with power supply related alerts if you connect both inputs. Regarding your conc...

Defututus · 01-13-2023

Just check all interfaces for physical layer errors, check the log of all devices if some convergence occurred. Implement storm control, check if the spanning-tree loopguard is enabled. Check spanning-tree rootbridges, enable the logging of the spann...

Member Since	‎05-31-2018 05:24 AM
Date Last Visited	‎04-14-2025 04:56 AM
Posts	15
Total Helpful Votes Received	20

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User Activity

Investigation of DROPS on ASIC

LACP & TRUNKS - "convergence" time

Spanning-tree loop -> broadcast storm -> network congestion

Re: Catalyst 3850, 4500x, 9300 completely disable ipv6

Re: Bandwidth lower speed then the port channel

Re: If LLDP is supported on physical interfaces, what about CDP?

Re: Power supply for IE2000 that is dual-mode and dual-power

Re: Host Flapping on Cisco 4507