Help configuring L3 switch into Comcast ENS

I have a L2 connection set up via Comcast ENS service. It supposed to resemble a large L2 full mesh network.

I have inherited several sites working via this service and am pretty green insofar and R&S.

I am trying to bring a up a new site using and SFP port on 3560 but I'm unsure on how to configure the port. It's connected via the ENS but does not see any of the other connected devices.

I can get to the switch via SSH without issue.

 Current configuration : 4017 bytes ! ! Last configuration change at 22:40:39 UTC Wed Nov 28 2018 by jadmin ! version 15.0 no service pad service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname datacenter-CORESW1 ! boot-start-marker boot-end-marker ! ! enable secret 4 ! no aaa new-model system mtu routing 1500 ! ! ! ip domain-name xxx.org ip name-server 8.8.8.8 ip name-server 8.8.4.4 ! ! crypto pki trustpoint TP-self-signed-1543620224 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-1543620224 revocation-check none rsakeypair TP-self-signed-1543620224 ! ! crypto pki certificate chain TP-self-signed-1543620224 ! ! spanning-tree mode pvst spanning-tree extend system-id ! ! ! ! ! ! ! ! ! vlan internal allocation policy ascending ! ip ssh version 2 ! ! ! ! ! ! ! ! ! ! ! interface FastEthernet0 no ip address shutdown ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! interface GigabitEthernet0/3 ! interface GigabitEthernet0/4 ! interface GigabitEthernet0/5 ! interface GigabitEthernet0/6 ! interface GigabitEthernet0/7 ! interface GigabitEthernet0/8 ! interface GigabitEthernet0/9 ! interface GigabitEthernet0/10 ! interface GigabitEthernet0/11 ! interface GigabitEthernet0/12 ! interface GigabitEthernet0/13 ! interface GigabitEthernet0/14 ! interface GigabitEthernet0/15 ! interface GigabitEthernet0/16 ! interface GigabitEthernet0/17 ! interface GigabitEthernet0/18 ! interface GigabitEthernet0/19 ! interface GigabitEthernet0/20 ! interface GigabitEthernet0/21 ! interface GigabitEthernet0/22 ! interface GigabitEthernet0/23 ! interface GigabitEthernet0/24 ! interface GigabitEthernet1/1 description Comcast EDI switchport access vlan 888 ! interface GigabitEthernet1/2 ! interface GigabitEthernet1/3 description Comcast ENS switchport trunk encapsulation dot1q switchport mode trunk switchport priority extend trust ! interface GigabitEthernet1/4 ! interface TenGigabitEthernet1/1 ! interface TenGigabitEthernet1/2 ! interface Vlan1 no ip address shutdown ! interface Vlan888 ip address xx.xx.xx.234 255.255.255.248 ! ip default-gateway xx.xx.xx.233 ! ip http server ip http secure-server ! ip route 0.0.0.0 0.0.0.0 xx.xx.xx.233 ip route 0.0.0.0 0.0.0.0 Vlan888 ! ! ! ! line con 0 line vty 0 4 exec-timeout 5 0 login local transport input ssh line vty 5 15 no login transport input ssh ! ntp server time.google.com end