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no ip pim dm-fallback posted 10/12/2006
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Is the "no ip pim dm-fallback" command used with sparse mode ?  All of the
documentation I read state that it is a command and should be entered on all
sparse-mode routers to prevent fallback to dense mode in the event of RP

I am unable to enter this command :

ROM: System Bootstrap, Version 12.2(7r) [cmong 7r], RELEASE SOFTWARE (fc1)
ROM: C2600 Software (C2600-ADVENTERPRISEK9-M), Version 12.3(20), RELEASE

R2(config)#no ip pim ?
  accept-register       Registers accept filter
  accept-rp             RP accept filter
  autorp                Configure AutoRP global operations
  bidir-enable          Enable Bidir-PIM
  bsr-candidate         Candidate bootstrap router (candidate BSR)
  log-neighbor-changes  Log PIM neighbor up/down and DR changes
  register-rate-limit   Rate limit for PIM data registers
  register-source       Source address for PIM Register
  rp-address            PIM RP-address (Rendezvous Point)
  rp-announce-filter    Auto-RP announce message filter
  rp-candidate          To be a PIMv2 RP candidate
  send-rp-announce      Auto-RP send RP announcement
  send-rp-discovery     Auto-RP send RP discovery message (as RP-mapping
  spt-threshold         Source-tree switching threshold
  ssm                   Configure Source Specific Multicast
  state-refresh         PIM DM State-Refresh configuration
  vrf                   Select VPN Routing/Forwarding instance

Is this command no longer available?

Thank you