BIG-IP is failing to reach the default gateway.

We are facing problem in reaching the default gateway from one of the partition we create on BIG IP system (vCMP Guest on vCMP host BIG-IP5200v Chassis), we have create a vlan with /26 subnet, it has a two local ip address (one on each unit) and a floating address. The DG is a SVI on the a juniper firewall and the transit is built on a nexus 5K switch, the set-up is like; BIG-IP (vCMP Guest) >> LCAP (multiple vlans)>>> Nexus layer 2 >>LCAP (multiple vlans)>>> Firewall. Note: •We have around more than 20 vlans on the LCAP and all working good except the new vlan we have created. •I could see the mac address on firewall interface on the layer switch but I couldn’t find the BIG-IP’s Interface (New VLAN) MAC. Please advice, thank you.