Bridging fails between E1 and FastEthernet

Group,

I ran into the following issue and maybe I'm missing something, or I'm
running into something that's simply not possible. I'm trying to bridge an
E1 to Ethernet, but for some reason it doesn't work.

Topology:
SW2-Gig1/0/3--------Fa0/1--R3--S0/0:0-----------S0/2/0:0--R2
SW1-Gig1/0/3--------Fa0/0--^

Config SW1:
interface GigabitEthernet1/0/3
 no switchport
 ip address 1.1.100.11 255.255.255.0

Config SW2:
interface GigabitEthernet1/0/3
 no switchport
 ip address 1.1.100.10 255.255.255.0

Config R2:
controller E1 0/2/0
 channel-group 0 timeslots 1-31
!
interface Serial0/2/0:0
 ip address 1.1.100.2 255.255.255.0

Config R3:
bridge irb
!
controller E1 0/0
 channel-group 0 timeslots 1-31
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
 bridge-group 1
!
interface Serial0/0:0
 no ip address
 bridge-group 1
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 bridge-group 1
!
interface BVI1
 ip address 1.1.100.3 255.255.255.0
!
bridge 1 protocol ieee
bridge 1 route ip

Outputs:

SW1 can ping SW2 over R3, so Ethernet to ethernet bridging works:
SW1(config)#do ping 1.1.100.10

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.100.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/9 ms
SW1(config)#

The BVI works fine, as R3 can ping both SW1 and SW2, except R2. R2 can't
ping any of the addresses.

R3#ping 1.1.100.10

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.100.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
R3# ping 1.1.100.11

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.100.11, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R3#ping 1.1.100.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.100.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R3#sh bridge 1 verbo

Total of 300 station blocks, 298 free
Codes: P - permanent, S - self

BG Hash Address Action Interface VC Age RX count TX
count
 1 2B/0 0026.52cd.6f44 forward FastEthernet0/0 - 0 6
   0
 1 37/0 001c.b1c6.7047 forward FastEthernet0/1 - 0 16
  10

Flood ports (BG 1) RX count TX count
FastEthernet0/0 8 8
Serial0/0:0 0 14
FastEthernet0/1 8 8

R3#sh span sum
Root bridge for: Bridge group 1.
PortFast BPDU Guard is disabled

Name Blocking Listening Learning Forwarding STP Active
-------------------- -------- --------- -------- ---------- ----------
Bridge group 1 0 0 0 3 3
-------------------- -------- --------- -------- ---------- ----------
      1 Bridge Group 0 0 0 3 3
R3#

I'm in the dark what it could be why this isn't working. I've seen this
configuration working numerous times on other serial interfaces, but never
tried it on an E1 before.

Many thanks for your ideas!

--
Regards,
Rick Mur
Triple CCIE #21946 (Routing & Switching / Service Provider / Storage)
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com
Blogs and organic groups at http://www.ccie.net