Hi Guys ,
I have tow Core Cisco 4500x switches and there is a vss between them. also , i have an access switch connect to Core switch via ether channel from both sides. also, i create a MGMT vlan in the both switches to can manage them via telent connection. the access switch has interface vlan 20 with IP address 10.0.0.20/24 and ip default-gateway 10.0.0.1 to the core switch. regarding the issue , sometimes i can not ping from PC to the access switch. but sometimes it works. while i was checking the issues , i found that if i ping from core to access it will works from PC. please need any idea about this issue.