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- About mikeos
About mikeos
Community Record
12
Posts
6
Kudos
0
Solutions
Badges
Oct 21 2021
5:12 AM
2 Kudos
Hey AKH223 in the end the problem was we have om1 fiber in the building with lrm transceivers the issue was because the patch cables where dirty, nnot the right type and not plugged in correctly. once I had everything plugged in correctly with the right cables and transceiver and plug in the correct way with fiber conditioning cables we now have 30 closets stable at 20g per closet and has been rock solid hope this helps you out
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May 14 2021
7:26 AM
at this point I have replaced the gbics with meraki gbics if I plug in 1 cable it is stable for 7h or so then starts bouncing repeatedly every few minutes I tried pluggin in just the second cable and it does the same thing i'll update this ticket with a solution when I get one from meraki support
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May 11 2021
5:43 AM
I did not implement those changes as my meraki ticket said not to at this time I did replace everything yesterday, cables, transceivers I cleaned all the fiber the connection sat stable for almost 7hours then it just said there was a loop and the connection keeps bouncing there have been 3 other loops detected thruout the night I have turned off that secondary connection for now, very weird and the only suggestion from tech support is to buy their tranceivers
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May 4 2021
8:06 AM
We are running 12.28 on everything This is our first Meraki to Meraki setup The core The edge In this configuration plugging in both edge ports causes a loop and took down a 6 x ms425-32 stack
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May 4 2021
7:44 AM
1 Kudo
the layer 3 vlans are on the me425 and the core is set as the root bridge this works fine when I use 1 of the cables plugging in the second cable causes the entire thing to fail as it sees it as a loop not an addition to the agg group I noticed the 12.28.1 firmware update and one of the notes states loop detection on the ms250 maybe it's a firmware issue but I figured meraki to meraki would have been a seamless integration
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May 4 2021
6:24 AM
1 Kudo
I have a stack of 6 ms425 as my core and ms250 in stacks in the closet I am connecting my first ms250 to the ms425 I have Aggs on both ends that span switches in the stack when I have 1 cable plugged in everything is fine but I only get 10g throughput and no failover when I plug in the other cable in the agg ports on both ends the ms425 sees it as a loop and ended up crashing my entire stack of 6 ms425's that everything needed the power cycled I have a ticket open with meraki but they don't believe that the cable I plugged in was the cause of the loop so i'll be doing it again with them this weekend to see it fail in action and maybe figure out why it is happening just wondering if anyone has had this issue
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Oct 7 2020
10:02 AM
I have checked and confirmed that all vlans on both ends of the trunks are identical I did enable udld to enforce and stp loop guard on my agg trunk ports the udld is causing an error from a neighboring switch that is connected to the same core not directly connected to the stack that is throng the error
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Oct 7 2020
5:51 AM
I have installed 3 ms250 stacks each stack has 2 10g fiber back to 2 hp cores, the hp cores are not using standard stuff like vrrp it is just 2 cores with ip's on the vlans and trunks containing the 2 fibers that go to each closet when the first stack went in it was fine, the second stack is fine as well the udld is set to warn and 1 of the fibers is yellow in the dashboard for all stacks once I added the third stack I started to get vlan mismatch on ports that are connected to the cores but in the topology view it looks like stack 3 is connected thru stack 2 I beleive I have my trunks miss configured and I can't seem to find any info since the HP's aren't really doing any core clustering using vrrp should udld be set to enforce and the stp guard should be set to loop guard I read that on the forum somewhere but just looking for confirmation on the proper setup for these ms250's thanx
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