From: naveen M S (navin.ms@gmail.com)
Date: Wed Mar 11 2009 - 06:19:39 ARST
Group,
I've been pulling my hairs for almost an hour and no luck. Any pointers to
whatz going wrong here ? Here is my setup and task details.
*Setup:*
R5-----+
/ |
/ |
/ |
vlan3--R3 +----SW2--vlan8
\ |
\ |
\ |
R1-----+
R1 is RP for groups in range 224.0.0.0/5
R5 is RP for groups in range 232.0.0.0/5
SW2 is the MA for all groups
*Task:*
Vlan-3 on R3 has clients for groups 224.24.24.24 and 232.32.32.32
Multicast server in vlan-8 is sending traffic for these 2 groups.
A ping from SW2 (sourced from vlan-8) to these 2 groups must be replied by
R3.
*Problem:*
Ping to 224.24.24.24 and 232.32.32.32 fails from SW2 (source ip = vlan-8).
Am suspecting the RPF failure on R3. A traceroute from R3 to vlan-8 gets
load balanced between R1 and R5. Configured a static mroute such that R3
uses R1 as Next Hop towards the vlan-8 source, but no luck.
Rack1R3# *show run | inc mroute*
ip mroute 156.1.8.0 255.255.255.0 156.1.13.1
Rack1R3# *traceroute 156.1.8.8*
Type escape sequence to abort.
Tracing the route to 156.1.8.8
1 156.1.35.5 28 msec
156.1.13.1 28 msec
156.1.35.5 24 msec
2 156.1.18.8 32 msec
156.1.58.8 28 msec *
Rack1R3# *show ip route eigrp | ^D*
D 156.1.8.0/24 [90/2586112] via *156.1.35.5*, 02:11:15,
Virtual-Access2
[90/2586112] via *156.1.13.1*, 02:11:15,
Virtual-Access3
Rack1R3#* show ip pim rp mapping*
PIM Group-to-RP Mappings
Group(s) 224.0.0.0/5
RP 150.1.1.1 (?), v2v1
Info source: 150.1.8.8 (?), elected via Auto-RP
Uptime: 00:19:29, expires: 00:02:21
Group(s) 232.0.0.0/5
RP 150.1.5.5 (?), v2v1
Info source: 150.1.8.8 (?), elected via Auto-RP
Uptime: 00:19:29, expires: 00:02:19
Rack1R3#
Rack1R3# *show ip mroute*
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,
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
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.0.1.39), 00:18:50/stopped, RP 0.0.0.0, flags: D
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Virtual-Access3, Forward/Sparse, 00:18:50/00:00:00
Virtual-Access2, Forward/Sparse, 00:18:50/00:00:00
(150.1.1.1, 224.0.1.39), 00:00:45/00:02:22, flags: PT
Incoming interface: Virtual-Access3, RPF nbr 156.1.13.1
Outgoing interface list:
Virtual-Access2, Prune/Sparse, 00:00:46/00:02:13
(150.1.5.5, 224.0.1.39), 00:18:51/00:02:11, flags: T
Incoming interface: Virtual-Access2, RPF nbr 156.1.35.5
Outgoing interface list:
Virtual-Access3, Forward/Sparse, 00:18:51/00:00:00
(*, 224.0.1.40), 00:19:18/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Virtual-Access3, Forward/Sparse, 00:19:18/00:00:00
Virtual-Access2, Forward/Sparse, 00:19:18/00:00:00
Loopback0, Forward/Sparse, 00:19:18/00:00:00
(150.1.8.8, 224.0.1.40), 00:18:53/00:02:11, flags: LT
Incoming interface: Virtual-Access2, RPF nbr 156.1.35.5
Outgoing interface list:
Loopback0, Forward/Sparse, 00:18:53/00:00:00
Virtual-Access3, Prune/Sparse, 00:02:58/00:00:04
Rack1R3#
Rack1R3#* show ip pim interface *
Address Interface Ver/ Nbr Query DR DR
Mode Count Intvl Prior
150.1.3.3 Loopback0 v2/S 0 30 1
150.1.3.3
156.1.35.3 Virtual-Template1 v2/S 0 30 1
0.0.0.0
156.1.35.3 Virtual-Access2 v2/S 1 30 1
0.0.0.0
156.1.13.3 Virtual-Template2 v2/S 0 30 1
0.0.0.0
156.1.13.3 Virtual-Access3 v2/S 1 30 1
0.0.0.0
Rack1R3#
Rack1SW2#* traceroute 156.1.13.3*
Type escape sequence to abort.
Tracing the route to 156.1.13.3
1 156.1.18.1 0 msec 0 msec 8 msec
2 156.1.13.3 25 msec * 25 msec
Rack1SW2#
Rack1SW2# *show ip pim interface *
Address Interface Ver/ Nbr Query DR DR
Mode Count Intvl Prior
156.1.58.8 Vlan58 v2/S 1 30 1
156.1.58.8
156.1.18.8 Vlan18 v2/S 1 30 1
156.1.18.8
156.1.8.8 Vlan8 v2/S 0 30 1
156.1.8.8
150.1.8.8 Loopback0 v2/S 0 30 1
150.1.8.8
Rack1SW2#
Rack1SW2# *ping 224.24.24.24 source 156.1.8.8 repeat 5*
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 224.24.24.24, timeout is 2 seconds:
Packet sent with a source address of 156.1.8.8
*.....*
Rack1SW2#
Rack1SW2# *ping 232.32.32.32 source 156.1.8.8 repeat 5*
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 232.32.32.32, timeout is 2 seconds:
Packet sent with a source address of 156.1.8.8
*.....*
Rack1SW2#
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Mon Apr 06 2009 - 06:44:04 ART