Cisco switch - use several ports for WAN usage with MGTM assigned to them

[sprintership-il]

Experts,

I have Cisco 3750 and have vlan 111 created with name WAN_VLAN, assigned ports gi0/1 - 5 and that works well. In that way, I have separated these ports from others and I can use them for WAN purpose.

Here is the other part. I need to be able use health check from Peplink using ping method for these 5 ports. Is there any way to achieve this? Without affecting other ports which are used by LAN. 

I guess I have to assign some sort of MGTM IP for these ports but not affecting WAN. 

Thank You

[Georg Pauwen]

Hello,

you cannot assign IP addresses to those interfaces and at the same time have them in the WAN_VLAN. Actually, looking at the Peplink manual, I think the WAN Health Check is designed for physical WAN interfaces with an IP address. I cannot find a reference to SVIs...

[sprintership-il]

thank you, I was told I did not need MGTM IP, any external Ip should be fine like ISP DNS and Google. 

[Georg Pauwen]

Exactly, you need an external, public IP address, which is either assigned to the Vlan interface OR a physical interface, not both at the same time...