Re: RPF failures on multicast over gre tunnel

From: theKonqueror (thekonqueror@gmail.com)
Date: Tue Apr 08 2008 - 06:11:26 ART

Here it is:

R4:

R4#sh ip pim neighbor
PIM Neighbor Table
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
155.1.0.5 Tunnel0 00:01:12/00:01:31 v2 1 / S
R4#

R4#sh ip mroute | b Int
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 224.2.2.2), 00:35:58/stopped, RP 0.0.0.0, flags: DCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Tunnel0, Forward/Dense, 00:01:47/00:00:00
    Ethernet0/0, Forward/Dense, 00:00:47/00:00:00

(155.1.0.5, 224.2.2.2), 00:00:26/00:02:33, flags: L
  Incoming interface: Serial1/0, RPF nbr 0.0.0.0
  Outgoing interface list:
    Tunnel0, Forward/Dense, 00:00:26/00:00:00
    Ethernet0/0, Forward/Dense, 00:00:26/00:00:00

(*, 224.0.1.40), 00:36:48/00:02:14, RP 0.0.0.0, flags: DCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Tunnel0, Forward/Dense, 00:01:47/00:00:00
    Serial1/0, Forward/Dense, 00:00:52/00:00:00
    Ethernet0/0, Forward/Dense, 00:00:45/00:00:00

R4#sh ip mroute count
IP Multicast Statistics
3 routes using 2334 bytes of memory
2 groups, 0.50 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per
second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)

Group: 224.2.2.2, Source count: 1, Packets forwarded: 0, Packets received:
30
  Source: 155.1.0.5/32, Forwarding: 0/0/0/0, Other: 30/30/0

Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets received:
0
R4#

R4#debug ip mpacket detail
IP multicast packets debugging is on (detailed)
R4#
*Mar 1 00:43:10.019: IP(0): MAC sa=*Tunnel* (Tunnel0)
*Mar 1 00:43:10.023: IP(0): IP tos=0x0, len=100, id=618, ttl=253, prot=1
*Mar 1 00:43:10.023: IP(0): s=155.1.0.5 (Tunnel0) d=224.2.2.2 id=618,
ttl=253, prot=1, len=100(100), not RPF interface
R4#
*Mar 1 00:43:12.055: IP(0): MAC sa=*Tunnel* (Tunnel0)
*Mar 1 00:43:12.059: IP(0): IP tos=0x0, len=100, id=619, ttl=253, prot=1
*Mar 1 00:43:12.059: IP(0): s=155.1.0.5 (Tunnel0) d=224.2.2.2 id=619,
ttl=253, prot=1, len=100(100), not RPF interface
R4#

---------------------------------------------

R5

R5#sh ip pim neighbor
PIM Neighbor Table
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
155.1.0.4 Tunnel0 00:02:53/00:01:19 v2 1 / S
R5#

R5#sh ip mroute | b Int
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 224.0.1.40), 00:36:51/00:02:36, RP 0.0.0.0, flags: DCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Tunnel0, Forward/Dense, 00:03:11/00:00:00
    Serial1/0, Forward/Dense, 00:36:51/00:00:00

R5#

R5#sh ip mroute count
IP Multicast Statistics
1 routes using 772 bytes of memory
1 groups, 0.00 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per
second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)

Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets received:
0
R5#

---------------------------------------------

Thanks,
Rahul

On Tue, Apr 8, 2008 at 2:34 PM, Sadiq Yakasai <sadiqtanko@gmail.com> wrote:

> HI Rahul,
>
> Please can you provide:
>
> show ip mroute count
> show ip pim nei
> show ip mroute
>
> From both sides?
>
> Sadiq
> 

-- 
Bugs can neither be created nor be removed from software by a developer.
They can only be converted from one form to another. The total number of
bugs in the software always remain constant.

.}l}..}l}.

This archive was generated by hypermail 2.1.4 : Thu May 01 2008 - 08:25:50 ART