It looks like port 1 should be in access mode for VLAN 143, not general mode. You already have a static route in place on the PowerConnect that directs traffic to the next hop in the network. But there may need to be one placed on the Cisco that helps direct traffic back to the PowerConnect. Here is a good post to look through also. [URL] 
I need some help sorting out a routing issue on a 6224 we have configured to act as a transit vlan for one of our locations.  The general idea is 8.143 is the transit vlan, 8.144 is our PC LAN, 8.145 will be our VOIP lan. We installed this switch with our WAN provided last week but had to back out. Seemed traffic arriving at the WAN providers interface to our transit VLAN (172.22.143.254) was not going anywhere.  These were the symptoms 1) We could ping from 172.22.144.x to 172.22.145.x and 172.22.143.x 2) We could ping from 172.22.145.x to 172.22.143.x and 172.22.144.x 3) We could ping from 172.22.143.x to 172.22.144.x and 172.22.145.x 4) If I was plugged into the 6224 on with a 143.x address I could ping our remote site at 172.22.8.x no problem but not from 144.x or 145.x 5) From 172.22.8.x I could not ping 144.x or 145.x or 143.1  (I could ping 143.254 which was the WAN providers interface to our switch)   Here is the running config for the switch.  Any suggestions would be greatly appreciated: console>enable console#show running !Current Configuration: !System Description "PowerConnect 6224, 3.3.6.4, VxWorks 6.5" !System Software Version 3.3.6.4 !Cut-through mode is configured as disabled ! configure vlan database vlan 143-145 vlan routing 143 1 vlan routing 144 2 vlan routing 145 3 vlan association subnet 172.22.143.0 255.255.255.0 143 vlan association subnet 172.22.144.0 255.255.255.0 144 vlan association subnet 172.22.145.0 255.255.255.0 145 exit stack member 1 1 exit ip address dhcp ip routing ip route 0.0.0.0 0.0.0.0 172.22.143.254 interface vlan 143 name "Transit" routing ip address 172.22.143.1 255.255.255.0 exit interface vlan 144 name "TWLAN" routing ip address 172.22.144.1 255.255.255.0 exit interface vlan 145 name "VOIP" routing ip address 172.22.145.1 255.255.255.0 exit username "admin" password 746f7a78621059d80fdc538acc40cbf2 level 15 encrypted ! interface ethernet 1/g1 switchport mode general switchport general allowed vlan add 143 exit ! interface ethernet 1/g2 switchport mode general switchport general allowed vlan add 143 exit ! interface ethernet 1/g3 switchport mode general switchport general allowed vlan add 144 exit ! interface ethernet 1/g4 switchport mode general switchport general allowed vlan add 144 exit ! interface ethernet 1/g5 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g6 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g7 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g8 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g9 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g10 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g11 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g12 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g13 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g14 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g15 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g16 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g17 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g18 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g19 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g20 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g21 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g22 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g23 switchport mode general switchport general allowed vlan add 145 exit ! interface ethernet 1/g24 switchport mode general switchport general allowed vlan add 145 exit exit console#
Transit VLAN on PowerConnect 6224