Bridge Group question, getting encapsulation failed ...

I am working on something in the lab, and I was wondering...

I have two HDLC serial connections that I am bridging together...

bridge irb ! interface Serial0 no ip address clockrate 56000 bridge-group 1 ! interface Serial1 no ip address clockrate 56000 bridge-group 1 ! interface BVI1 ip address 10.254.39.227 255.255.255.248 ! bridge 1 protocol ieee bridge 1 bridge ip < - this command has been entered but doesn't show up in the config

The other two routers are at .225 and .226

When I ping from 226 (remote router with an IP on its main) to 227, I get:

00:35:38: IP: tableid=0, s=10.254.39.227 (local), d=10.254.39.226 (BVI1), routed via RIB 00:35:38: IP: s=10.254.39.227 (local), d=10.254.39.226 (BVI1), len 100, sending 00:35:38: IP: s=10.254.39.227 (local), d=10.254.39.226 (BVI1), len 100, encapsulation failed

Why?

Jonathan