04-14-2021 03:19 PM
i have a 6807 core switch setup as a VSL-Pair. have about 1000 VoIP phones throughout maybe 10-12 access switches. in the last few weeks i have been noticing that people on voice-VL1 having issues with dropped calls and the other folks on voice-VL2 are fine. i went to check a few common items first then as i poked around further i ran some basic SolarWinds utilities to see why this was happening and noticed 5 devices on the problem VL were intermittently unavailable and getting packet loss from my simple utility. the other 5 on the other VL was not having any issues and i can ping all 5 of those devices with no errors.
so i checked the VL interfaces and found this..... (below)
wondering how this can happen only on 1 of the 30 VL's on this switch. bad phone/device causing errors maybe ?
any help would be appreciated. thanks.
--------------------------
b8m-s01# sh int vlan 108 | i drops
Input queue: 0/75/123326/0 (size/max/drops/flushes); Total output drops: 0
0 unknown protocol drops
b8m-s01#sh int vlan 92 | i drops
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
0 unknown protocol drops
04-14-2021 04:51 PM
Your QoS drop tail is config only for one vlan other is not so that why the QoS drop packet before it full the queue.
Share both qos of both vlan
04-14-2021 05:04 PM
First, what is the difference between VL1 and VL2 - compare? is this the same issue on the same Stack or a different stack?
what is the Layer 3 Gateway? for this VLAN on Core Switch 6807 ?
Coming back to the Physical Location, is this issue device all in one location or 1 switch?
Do all Access switches have the same config?
First, i start with the Fresh Patch cable, Same switch try different ports for 1 device and test it.
I compare the configuration.
by the way what model of access switches?
04-14-2021 05:36 PM
04-14-2021 05:56 PM
are the end devices connected to 6807 ? or what is the access switch? what is the Access switch model ?
VL1 means native VLAN 1 ?
04-14-2021 06:07 PM
04-14-2021 06:41 PM
b8m-s01# sh int vlan 108 | i drops Input queue: 0/75/123326/0 (size/max/drops/flushes); Total output drops: 0 0 unknown protocol drops b8m-s01#sh int vlan 92 | i drops Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
what device did you take the output from Cat 4500 or Cat 9K ?
04-14-2021 06:48 PM
04-14-2021 11:52 PM
At this, it is hard to say what is the issue, you are just relying on only Ping- as I understand your setup VSS holds all the SVI, Stack of Access switches only Layer 2.
If this only certain Stack, i will be more focused to Look at those switches compare to others working as expected.
This case Model, IOS Code? what is the speed of the interface, what if the device has an issue plugged into the working switch, is these expected results the same?
04-15-2021 07:03 AM
04-15-2021 05:46 AM
can you share
show queueing interface
04-15-2021 06:57 AM
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide