Brocade Multi-Service IronWare Multicast Configuration Guide (Supporting R05.6.00) - Manual (Page 32)

20 Multi-Service IronWare Multicast Configuration Guide
53-1003032-02
IP multicast boundaries
1
If this feature is disabled, configuration will be removed from multicast and if the native route
changes then the RPF for the multicast cache entries would change. Further, RPF lookup after
disabling this feature will not use LSP's underlying native path as RPF path. If RPF lookup results in
non-LSP multicast enabled path, RPF would resolve or else RPF resolution would fail.
Syntax: [no] rpf shortcut
Displaying the RPF routing path
This show command displays the RPF information, indicates that the route was learned through
which LSP path, if the RPF happens to be through LSP path.
Brocade(config)# show ip pim rpf source-address group-address
Brocade(config)# show ip pim rpf 130.50.11.10 226.10.10.1
Upstream LSP1 nbr 55.55.55.55 on e4/1
Displaying flag for RPFS for multicast cache entries
mcache show command output in MP is modified to show the flag RPFS if the resolution is through
LSP for the multicast cache entries using shortcut as the RPF and also, it displays a flag to indicate
that this entry is using RPF shortcut (LSP path).
Brocade(config)# show ip pim mcache
IP Multicast Mcache Table
Entry Flags : SM - Sparse Mode, SSM - Source Specific Mutlicast, DM - Dense Mode
RPT - RPT Bit, SPT - SPT Bit, LSRC - Local Source, LRCV - Local Receiver,
RPFS - RPF Shortcut, HW - HW Forwarding Enabled, FAST - Resource
Allocated,
TAG - Need For Replication Entry, REGPROB - Register In Progress,
REGSUPP - Register Suppression Timer, MSDPADV - Advertise MSDP,
NEEDRTE - Route Required for Src/RP, PRUN - DM Prune Upstream
Interface Flags: IM - Immediate, IH - Inherited, WA - Won Assert
MJ - Membership Join, MI - Membership Include, ME - Membership Exclude
BR - Blocked RPT, BA - Blocked Assert, BF - Blocked Filter, BI - Blocked IIF,
BM - Blocked MCT
Total entries in mcache: 1
(54.1.1.10, 226.0.1.0) in v52 (e2/6), Uptime 00:45:55, Rate 115 (SM)
upstream neighbor 52.1.1.1
Flags (0xf006c4e1) SM SPT LRCV HW FAST TAG MSDPADV RPFS
fast ports: ethe 1/16 ethe 2/9
AgeSltMsk: 00000002, FID: 0x8225, MVID: 257 , RegPkt: 44, AvgRate: 114, profile:
none
Forwarding_oif: 2, Immediate_oif: 1, Blocked_oif: 1
L3 (HW) 2:
e1/16(VL57), 00:43:17/0, Flags: MJ
e2/9(VL59), 00:44:45/168, Flags: IM MJ
Blocked OIF 1:
e1/2(VL53), 00:44:00/209, Flags: IH BR
Multicast ECMP support
If there are multiple Equal Cost Paths between PIM routers to reach the source or the RP, multicast
RPF algorithm should distribute the load across available paths to take advantage of those paths.