[c-nsp] cRTP on MLPPP Sup720

[Andrew Melton]

Does anyone happen to know whether rtp/tcp header compression is supported on multilink interfaces on a sup720 MSFC? 

I am able to configure both rtp and tcp header compression on the multilink1 interface, but 'sh ip rtp header-compresson' shows nothing is actually being sent out compressed.

interface Multilink1
 ip address 192.168.200.1 255.255.255.0
 ip tcp header-compression iphc-format
 ip tcp compression-connections 256
 service-policy output llq
 ppp multilink
 no ppp multilink fragmentation
 multilink-group 1
 ip rtp header-compression iphc-format
 ip rtp compression-connections 1000
!

NYC6509MSFC#sh ip rtp header-compression 
RTP/UDP/IP header compression statistics:
  Interface Multilink1:
    Rcvd:    50382182 total, 50364883 compressed, 9478 errors
             9280 dropped, 0 buffer copies, 0 buffer failures
    Sent:    0 total, 0 compressed, 
             0 bytes saved, 0 bytes sent
    Connect: 1000 rx slots, 1000 tx slots, 
             0 long searches, 0 misses 0 collisions, 0 negative cache hits

NYC6509MSFC#sh ip tcp head
TCP/IP header compression statistics:
  Interface Multilink1:
    Rcvd:    4871232 total, 2050314 compressed, 0 errors
             0 dropped, 31083 buffer copies, 0 buffer failures
    Sent:    0 total, 0 compressed, 
             0 bytes saved, 0 bytes sent
    Connect: 256 rx slots, 256 tx slots, 
             0 long searches, 0 misses 0 collisions, 0 negative cache hits

Thanks.