Technical data

Cisco SM-X Layer 2/3 EtherSwitch Service Module Configuration Guide for Cisco 4451-X ISR
How to Configure the Cisco SM-X Layer 2/3 ESM on the Router
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Cisco SM-X Layer 2/3 EtherSwitch Service Module Configuration Guide for Cisco 4451-X ISR
Configuring BDI to Prevent Broadcast Loops
To prevent loops from occurring when more than one module is configured with same bridge domain
interface, you must configure the same bridge domain with split-horizon to stop the traffic flow between
the two modules as shown below:
SUMMARY STEPS
1. configure terminal
2. interface Ethernet-Internal1/0/0
3. service instance 1 ethernet
4. encapsulation dot1q 20
5. rewrite ingress tag pop 1 symmetric
6. bridge-domain 1 split-horizon group 0
7. interface Ethernet-Internal 2/0/0
8. service instance 1 ethernet
9. encapsulation dot1q 20
10. rewrite ingress tag pop 1 symmetric
11. bridge-domain 1 split-horizon group 0
12. interface BDI 1
13. mtu 9216
14. ip address 10.0.0.1 255.255.255.0