Hi everyone,
after solving issue with wrong VLAN configuration I have another one which I need help.
This is my topology for the bridge connection:
Issue:
1. Trying to ping Interface VLAN 840 from Core to 3560, no response.....
2. Then trying to ping DG 840 from 3560 to core, ping success.
3. After this successful ping I can do the ping in step 1. for about 30 seconds
4. Lose the connectivity from core to 3560 VLAN interface again.....
If I SSH to device when its ping-able It will just cut me after those ~30 seconds
Any ideas what might be an issue?
Before all steps I make sure:
1. I have IP+MAC in ARP table on Core
2. ALL MAC in mac tables(all match)
3. Repeater has ARP entry of the SVI 840 on 3560
Any guidance or help appreciated.
Hi, If there would be such ACL it would block the ICMP all the time right? And ICMP works in specific situation. From 3560 all the time. And no I am not aware of such ACL.
Okay, try to think outside the box a little and think about the other possibilities I raised. 😊
The SSID tags VLAN 840, but the switch has 840 untagged?
If it was a VLAN payment problem, this wouldn't even work, wouldn't you agree?
Can the MR86s ping the 3560 and the core reliably?
Gateway MR86:
to Core
to 3560 - no connectivity
Repeater MR86:
to Core
to 3560 - no connectivity
Both WAPs can reach core but none can reach 3560, after 3560 ping Gateway AP can ping but repeater no.
Could you double-check the subnet mask on the 3560 please.
Hi subnet mask matches on core and also on 3560 . /24