nbar not working on Dialer interfaces ???

hi everybody,

I have IOS 12.3(15) on a 2621 and I want to use nbar on my Dialer-If which connects to the DSL-modem of my ISP.

The actual docu from Cisco states that nbar is supported on Dialer-If since

But here at me it's not working. What have I done:

I activated nbar on the Dialer-If with "ip nbar protocol-discovery"

the I checked it with sh ip nbar protocol-discovery and got the following output:

router1#sh ip nbar protocol-discovery

Dialer1 Input Output Protocol Packet Count Packet Count Byte Count Byte Count 5 minute bit rate (bps) 5 minute bit rate (bps) ------------------------ ------------------------ ------------------------ bgp 0 0 0 0 0 0 citrix 0 0 0 0 0 0 .....

The are no values but there is traffic on the If. When I activate nbar on my internal fastethernet, it works.

What am I doing wrong.

Thanks in advance