how to properly verify a broadcast to multicast-helper?

hey all,

i was wondering how you can verify a broadcast to multicast helper-map? i
labbed this up and i noticed that i cannot send an ip sla with a udpecho to
the broadcast address (255.255.255.255) as this is disallowed.

So i thought i would send the udpecho to the ip broadcast address of that
subnet: 174.1.26.255 and it is properly send out:

*Mar 1 02:22:52.391: UDP: Random local port generated 49538, network 1
*Mar 1 02:22:52.395: Reserved port 49538 in Transport Port Agent for UDP IP
type 1
*Mar 1 02:22:52.395: UDP: sent src=174.1.26.6(49538),
dst=174.1.26.255(3434), length=24

Now on the router configured for the broadcast to multicast conversion i
configured the following on the interface receiving these udpecho's:

RSRack1R2#
interface FastEthernet0/0
 description "facing ip sla router"
 ip address 174.1.26.2 255.255.255.0
 ip broadcast-address 174.1.26.255
ip pim sparse-mode
 ip multicast helper-map broadcast 226.26.26.26 100
 no ip mroute-cache
end
interface Serial1/0
 description "this interface should have the converted broadcast"
 ip address 174.1.23.2 255.255.255.0
 ip pim sparse-mode
 no ip mroute-cache
 frame-relay map ip 174.1.23.3 203 broadcast
 no frame-relay inverse-arp
end

RSRack1R2#show access-list 100
Extended IP access list 100
    10 permit udp any any eq 3434
RSRack1R2#show run | incl forward
ip forward-protocol nd
ip forward-protocol udp 3434
RSRack1R2#show deb
Generic IP:
  IP multicast packets debugging is on
UDP:
  UDP packet debugging is on
RSRack1R2#
RSRack1R2#show ip pim rp-hash 226.26.26.26
  RP 150.1.1.1 (?), v2v1
    Info source: 150.1.3.3 (?), elected via Auto-RP
         Uptime: 01:35:23, expires: 00:02:53
  PIMv2 Hash Value (mask 0.0.0.0)
    RP 150.1.1.1, via Auto-RP
RSRack1R2#show ip rpf 150.1.1.1
RPF information for ? (150.1.1.1)
  RPF interface: Serial1/0
  RPF neighbor: ? (174.1.23.3)
  RPF route/mask: 150.1.1.0/24
  RPF type: unicast (ospf 1)
  RPF recursion count: 0
  Doing distance-preferred lookups across tables
RSRack1R2#

I dont see any packets being forwarded (RP-mappings are fine and no RPF
failures occuring).

Anyone who has a better idea on verifying this and perhaps why this is not
working? :)

-- 
Wouter Prins
wp_at_null0.nl
0x301FA912
Blogs and organic groups at http://www.ccie.net