About mriksman

mriksman · 09-12-2020

I am getting a MAC Flap every ~15 seconds.But reviewing the network layout, it's physically impossible for this to happen.What could be causing this?!

mriksman · 11-09-2019

Hi, We have a network like below;A PC (172.16.8.100) and an ASA (172.16.8.101) sit on the same Cisco Switch. The PC wants to communicate to a device on the outside interface (10.3.117.0/24) of the ASA. As it's a different subnet, the PC sends the pac...

mriksman · 03-29-2019

Hi, Firstly, please bare with me - I am certainly no expert, but I am the custodian of our beastly network, which covers a large, remote area utilising fiber and Wi-Max. The (simplified) diagram of the bits I am trying to understand is as follows; Ra...

mriksman · 09-13-2020

The Bridge Table of WIMAX-STN1 that is plugged into Fa0/5 is messed up.There are some devices that it has listed being on interface WLAN0 (like the offending MAC address we have been speaking about) when they definitely are not. They are connected to...

mriksman · 09-13-2020

Hmmm... I'm trying to understand what I am seeing....This is the one that is connected to Fa0/5. You can see the offending MAC is the only one listed as WLAN0...What is this BRIDGE table... And why is the BRIDGE table on all of these WIMAX stations s...

mriksman · 09-13-2020

Nope. Fa0/4 connects ONLY to a Hirschmann managed switch as seen in my picture above. There are no WiMAX stations on this link. There is no physical relation between Fa0/4 and Fa0/5. It's not the first time I've seen MAC Flapping being reported with ...

mriksman · 09-13-2020

SACRL201#sh mac add interface F0/4 Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 195 0009.0bf0.44a2 DYNAMIC Fa0/4 195 0...

mriksman · 09-13-2020

This is Fa0/5. It is connected to LAN0 of a Wi-MAX station, which then communicates to a Wi-MAX AP. The one in RED is the one flapping. It is physically located 57kms away, over 4 Hirschmann switches connected via fiber optic links.Fa0/4 is connected...

Member Since	‎03-26-2019 07:50 AM
Date Last Visited	‎09-23-2020 09:11 AM
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Impossible MAC Flap

Do all packets go through Router?

Puzzle - Impossible MAC Flap and Random Forward/Blocking SPANTREE

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Re: Impossible MAC Flap

Re: Impossible MAC Flap