3com SS3 Switch disapears when going MPLS

[kwsb222]

We currently have a 3Com SuperStack3 4400 switch hooked up to a Cisco 1700 router running off Frame and all is fine. Once we try toget this up on a new MPLS circuit, the switch disapears.

We have a 2800 Cisco router at our HQ in Seville, Ohio. We also have a Cisco 3560 Switch at our Seville HQ's. The Qwest MPLS circuit goes from Seville to our Chicago site. At the Chicago site we have that 3Com 4400 switch. Once we convert to MPLS, our switch does not see the Qwest owned Adtran router (We are removing our 1700 router from the equation and using a Qwest owned Adtran router).
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The 3 Com switch IP is 192.168.5.35

3com switch info below:

Interface Description
Management Port 192.168.5.35 on unit 1

Physical Address: 0050-547D-41BE

Network Address: 192.168.5.1

Mapping Type:
dynamic

Interface Description Destination Address Mask Next Hop Address
Management Port 192.168.5.35 on unit 1 0.0.0.0 0.0.0.0 192.168.5.1
Management Port 192.168.5.35 on unit 1 192.168.5.0 255.255.255.0 192.168.5.35
Console Port 192.168.101.1 on unit 1 192.168.101.0 255.255.255.0 192.168.101.1
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On our side in Seville, Ohio we have created a subnet on the Cisco router and 2 VLANS on the 3560 switch. The whole idea of this is to run the new MPLS circuit off our switch in Seville Ohio to Chicago. At Chicago, there is a Qwest managed adtran router which is onsite in Chicago, and that is connected to our 3Com 4400 switch. We have tried to convert this 3 times, and each time the 3Com switch dispears. We can see the 3com IP on our arp table, but no MAC or anything else.

Below is the Cisco configs we have going. The Qwest Adtran router IP is 192.168.5.1 and the DG of the Qwest Adtran router is 192.168.10.2 (MPLS going back to us in Seville via 192.168.10.1)

SEVRTR01 (Cisco 2800 Router)
192.168.1.1

interface GigabitEthernet0/0.5
Des Quest MPLS Circuit DS1NT-15310196 .01 & .02 (Chicago Elk Grove Vlan5)
encapsulation dot1Q 5
ip address 192.168.5.1 255.255.255.0
ip helper-address 192.168.2.225
ip flow ingress
ip flow egress
ip nat inside
ip virtual-reassembly
no cdp enable
no shut

no ip route 192.168.5.0 255.255.255.0 s0/1/0

int s0/1/0
shut
(This is our current port to Chicago)

***********************************************************************************
SEVSW09 (Cisco 3560 Switch)
192.168.9.189

interface Vlan10
ip address 192.168.10.3 255.255.255.0
no ip route-cache

config t
interface Vlan5
ip address 192.168.5.3 255.255.255.0
no ip route-cache

interface GigabitEthernet0/32
switchport access vlan 10

Can anyone figure out why we don't see our 3Com after going to the Qwest MPLS circuit?