General rules:

1. The router’s ‘ucse1/0/0 + ucse1/0/1’ ports will map to GE0 and GE1 on the blade
2. Bridging must be used to join the physical interfaces to the same broadcast domain
3. Separate bridges must be used for each VLAN
4. To use a native vlan, use “encapsulation untagged”

In our case we wanted to use tagging in the connection to the switch, but put the blade’s GE0 and GE1 interfaces on vlan 123 without tagging:

bridge-domain 123
!
interface Port-channel1
 no ip address
 no negotiation auto
 service instance 123 ethernet
 encapsulation dot1q 123
 rewrite ingress tag pop 1 symmetric
 snmp ifindex persist
 bridge-domain 123
 !
interface GigabitEthernet0/0/1
 description Switch:1
 no ip address
 negotiation auto
 channel-group 1 mode active
interface GigabitEthernet0/0/2
 description Switch:2
 no ip address
 negotiation auto
 channel-group 1 mode active
!
interface ucse1/0/0
 description UCS E-Series Blade:GE0
 no ip address
 no negotiation auto
 switchport mode trunk
 service instance 123 ethernet
 encapsulation untagged
 bridge-domain 123
 !
interface ucse1/0/1
 description UCS E-Series Blade:GE1
 no ip address
 no negotiation auto
 switchport mode trunk
 service instance 123 ethernet
 encapsulation untagged
 bridge-domain 123
 !