Yes:
Cisco 2821 on A.A.A.129--------Peplink WAN1 in drop-in mode-A.A.A.135---------LAN-Ports-on-Peplink-----DNS1(Simple-DNS)A.A.A.130,Mikrotik-A.A.A.132
WAN2 = Suddenlink cable modem - DHCP assigned IP.
From the Mikrotik-2 other Lan ports----one is 192.168.100.1 for my office PC network (using private DHCP)
Other port is 10.90.90.1 - A point-to-point wireless system to my service tower (using private DHCP)
Everything runs perfectly without the Peplink in the mix.
Thank you very much for help thus far.