[c-nsp] multicast problem

Riccardo S dim0sal at hotmail.com
Tue Mar 26 13:43:45 EDT 2013


try to repeat in better format:


Hi
Using PIM sparse-mode is there a way, on the randevouz point, to see which ip address has sent the register unicast 
packet to the radevouz point to register an available mcast flow ?
 
With "show ip mroute x.x.x.x" I can’t see anything but the provider is telling me it’s sending the flow and I can see 
the flow only enabling igmp static join on the interface connected to them.
 
See my interface config:

interface GigabitEthernet0/2
description LAN PROVIDER-A
ip address 1.1.1.3 255.255.255.224
ip pim neighbor-filter 31
ip pim bsr-border
ip pim dense-mode proxy-register list 120
ip multicast boundary 40
ip nat outside
ip virtual-reassembly in
ip igmp join-group 224.9.2.12    <--- if I cancel it the flow is stopped
load-interval 30
duplex full
speed 1000
 
Standard IP access list 31
   10 deny   any (2016753 matches)
 
Extended IP access list 120
   10 permit ip any 224.9.0.0 0.0.255.255 (38981 matches)
 
Standard IP access list 40
   10 deny   224.0.1.39
   20 deny   224.0.1.40 (4 matches)
   30 deny   239.0.0.0, wildcard bits 0.255.255.255
   40 permit 224.0.0.0, wildcard bits 15.255.255.255 (27476580 matches)

See provider router interface config:
 
interface GigabitEthernet1/12
description --- to Customer LAN
no switchport
ip address 1.1.1.2 255.255.255.224
no ip redirects
no ip proxy-arp
ip pim query-interval 1
ip pim sparse-mode
ip igmp static-group 224.9.2.12
ip igmp static-group 224.9.2.13
load-interval 30
no cdp enable
 
On my device I've:
 
#sh ip mroute 224.9.2.12
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet,
       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
       U - URD, I - Received Source Specific Host Report,
       Z - Multicast Tunnel, z - MDT-data group sender,
       Y - Joined MDT-data group, y - Sending to MDT-data group,
       V - RD & Vector, v - Vector
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode

 (*, 224.9.2.12), 1w5d/stopped, RP 10.16.18.247, flags: SJCF
  Incoming interface: GigabitEthernet0/0, RPF nbr 10.128.126.10
  Outgoing interface list:
    GigabitEthernet0/2, Forward/Dense, 1w5d/stopped
 
(10.169.8.66, 224.9.2.12), 16:11:23/00:02:09, flags: FT
  Incoming interface: GigabitEthernet0/2, RPF nbr 1.1.1.2
  Outgoing interface list:
    GigabitEthernet0/0, Forward/Sparse-Dense, 16:11:23/00:02:42
 
#sh ip mroute 224.4.2.13
Group 224.4.2.13 not found
#

Another doubt: on my network I’ve two RP with bootstrap configured, the router is config as follow:

ip pim rp-candidate Loopback1 group-list 20

access-list 20 remark PROVIDER-A
access-list 20 permit 224.9.0.0 0.0.255.255
access-list 20 remark PROVIDER-B
access-list 20 permit 224.9.2.0 0.0.0.255
access-list 20 permit 224.9.3.0 0.0.0.255
access-list 20 permit 224.9.4.0 0.0.0.255

 
Can this kind of configuration create problems if, for example, the group 224.9.2.12 is transmitter by PROVIDER-A 
(less specific match in the acl indentifing the the group-list ?

 
Tks
 		 	   		   		 	   		  


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