[Xorp-users] IGMP report group ...?
Hervé Léonard
lherve at interfaceconcept.com
Mon Oct 6 07:28:47 PDT 2008
Hi,
I try to join a group multicast by sending a IGMP report message from a
Linux host to a Linux Xorp router (both on a Linux 2.6 - Ubuntu 8.04 Hardy
Heron)
Here is the configuration of my testbed:
HostA Router B
eth0 ---------- eth0 eth1
192.168.2.2 192.168.2.1 100.0.0.1
Host A tries to join the group 239.7.7.7 or 224.7.7.7 by sending IGMP report
v2 on the LAN. Xorp Router B do nothing...?
Here the Xorp configuration:
labo at DOL2400# show
protocols {
igmp {
interface eth0 {
vif eth0 {
}
}
traceoptions {
flag {
all {
}
}
}
}
static {
route 192.168.3.0/24 {
next-hop: 100.0.0.2
}
}
}
fea {
unicast-forwarding4 {
forwarding-entries {
}
}
}
interfaces {
interface eth0 {
description: "Ethernet Interface #1"
vif eth0 {
address 192.168.2.1 {
prefix-length: 24
broadcast: 192.168.2.255
}
}
}
interface eth1 {
description: "Ethernet Interface #2"
vif eth1 {
address 100.0.0.1 {
prefix-length: 8
broadcast: 100.255.255.255
}
}
}
}
[edit]
labo at DOL2400#
And when I start this configuration, here is the rtrmgr log:
labo at DOL2400:~/src/xorp/xorp-1.5/rtrmgr$ sudo xorp_rtrmgr -b
/etc/xorp/config-xorp.sav
[sudo] password for labo:
[ 2008/10/06 14:22:31 INFO xorp_rtrmgr:17929 RTRMGR +239
master_conf_tree.cc execute ] Changed modules: interfaces, fea, rib, policy,
static_routes
[ 2008/10/06 14:22:31 INFO xorp_rtrmgr:17929 RTRMGR +96 module_manager.cc
execute ] Executing module: interfaces (fea/xorp_fea)
[ 2008/10/06 14:22:32 INFO xorp_fea MFEA ] MFEA enabled
[ 2008/10/06 14:22:32 INFO xorp_fea MFEA ] CLI enabled
[ 2008/10/06 14:22:32 INFO xorp_fea MFEA ] CLI started
[ 2008/10/06 14:22:32 INFO xorp_fea MFEA ] MFEA enabled
[ 2008/10/06 14:22:32 INFO xorp_fea MFEA ] CLI enabled
[ 2008/10/06 14:22:32 INFO xorp_fea MFEA ] CLI started
[ 2008/10/06 14:22:33 INFO xorp_rtrmgr:17929 RTRMGR +96 module_manager.cc
execute ] Executing module: fea (fea/xorp_fea)
[ 2008/10/06 14:22:39 INFO xorp_rtrmgr:17929 RTRMGR +96 module_manager.cc
execute ] Executing module: rib (rib/xorp_rib)
[ 2008/10/06 14:22:41 INFO xorp_rtrmgr:17929 RTRMGR +96 module_manager.cc
execute ] Executing module: policy (policy/xorp_policy)
[ 2008/10/06 14:22:43 INFO xorp_rtrmgr:17929 RTRMGR +96 module_manager.cc
execute ] Executing module: static_routes (static_routes/xorp_static_routes)
[ 2008/10/06 14:22:45 INFO xorp_rtrmgr:17929 RTRMGR +2228 task.cc
run_task ] No more tasks to run
[ 2008/10/06 14:23:51 INFO xorp_rtrmgr:17929 RTRMGR +96 module_manager.cc
execute ] Executing module: mfea4 (fea/xorp_fea)
[ 2008/10/06 14:23:51 INFO xorp_fea MFEA ] Interface added: Vif[eth0]
pif_index: 3 vif_index: 0 addr: 192.168.2.1 subnet: 192.168.2.0/24
broadcast: 192.168.2.255 peer: 0.0.0.0 Flags: MULTICAST BROADCAST
UNDERLYING_VIF_UP MTU: 1500
[ 2008/10/06 14:23:51 INFO xorp_fea MFEA ] Interface added: Vif[eth1]
pif_index: 2 vif_index: 1 addr: 100.0.0.1 subnet: 100.0.0.0/8 broadcast:
100.255.255.255 peer: 0.0.0.0 Flags: MULTICAST BROADCAST UNDERLYING_VIF_UP
MTU: 1500
[ 2008/10/06 14:23:51 ERROR xorp_fea:17930 MFEA +765 mfea_mrouter.cc
start_mrt ] setsockopt(MRT_INIT, 1) failed: Address already in use
[ 2008/10/06 14:23:51 INFO xorp_fea MFEA ] MFEA started
[ 2008/10/06 14:23:51 INFO xorp_rtrmgr:17929 RTRMGR +96 module_manager.cc
execute ] Executing module: igmp (mld6igmp/xorp_igmp)
[ 2008/10/06 14:23:51 WARNING xorp_rtrmgr:17929 XrlFinderTarget +406
../xrl/targets/finder_base.cc handle_finder_0_2_resolve_xrl ] Handling
method for finder/0.2/resolve_xrl failed: XrlCmdError 102 Command failed
Target "IGMP" does not exist or is not enabled.
[ 2008/10/06 14:23:51 INFO xorp_igmp MLD6IGMP ] Protocol enabled
[ 2008/10/06 14:23:51 INFO xorp_igmp MLD6IGMP ] CLI enabled
[ 2008/10/06 14:23:51 INFO xorp_igmp MLD6IGMP ] CLI started
[ 2008/10/06 14:23:52 INFO xorp_igmp MLD6IGMP ] Protocol started
[ 2008/10/06 14:23:52 INFO xorp_igmp MLD6IGMP ] Interface added: Vif[eth0]
pif_index: 3 vif_index: 0 addr: 192.168.2.1 subnet: 192.168.2.0/24
broadcast: 192.168.2.255 peer: 0.0.0.0 Flags: MULTICAST BROADCAST
UNDERLYING_VIF_UP MTU: 1500
[ 2008/10/06 14:23:52 INFO xorp_igmp MLD6IGMP ] Interface added: Vif[eth1]
pif_index: 2 vif_index: 1 addr: 100.0.0.1 subnet: 100.0.0.0/8 broadcast:
100.255.255.255 peer: 0.0.0.0 Flags: MULTICAST BROADCAST UNDERLYING_VIF_UP
MTU: 1500
[ 2008/10/06 14:23:53 INFO xorp_igmp MLD6IGMP ] Interface enabled: Vif[eth0]
pif_index: 3 vif_index: 0 addr: 192.168.2.1 subnet: 192.168.2.0/24
broadcast: 192.168.2.255 peer: 0.0.0.0 Flags: MULTICAST BROADCAST
UNDERLYING_VIF_UP MTU: 1500 DOWN IPv4 ENABLED
[ 2008/10/06 14:23:53 INFO xorp_igmp MLD6IGMP ] Interface started: Vif[eth0]
pif_index: 3 vif_index: 0 addr: 192.168.2.1 subnet: 192.168.2.0/24
broadcast: 192.168.2.255 peer: 0.0.0.0 Flags: MULTICAST BROADCAST
UNDERLYING_VIF_UP MTU: 1500 UP IPv4 ENABLED
[ 2008/10/06 14:23:53 INFO xorp_rtrmgr:17929 RTRMGR +2228 task.cc
run_task ] No more tasks to run
[ 2008/10/06 14:23:53 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.1 to 224.0.0.2 on vif eth0
[ 2008/10/06 14:23:53 TRACE xorp_igmp MLD6IGMP ] Notify routing add
membership for (0.0.0.0, 224.0.0.2) on vif eth0
[ 2008/10/06 14:23:53 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.1 to 224.0.0.22 on vif eth0
[ 2008/10/06 14:23:53 TRACE xorp_igmp MLD6IGMP ] Notify routing add
membership for (0.0.0.0, 224.0.0.22) on vif eth0
[ 2008/10/06 14:23:53 TRACE xorp_igmp MLD6IGMP ] RX IGMP_MEMBERSHIP_QUERY
from 192.168.2.1 to 224.0.0.1 on vif eth0
[ 2008/10/06 14:23:54 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.2 to 224.0.0.251 on vif eth0
[ 2008/10/06 14:23:54 TRACE xorp_igmp MLD6IGMP ] Notify routing add
membership for (0.0.0.0, 224.0.0.251) on vif eth0
[ 2008/10/06 14:23:58 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.1 to 224.0.0.2 on vif eth0
[ 2008/10/06 14:23:59 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.1 to 224.0.0.22 on vif eth0
[ 2008/10/06 14:24:24 TRACE xorp_igmp MLD6IGMP ] TX IGMP_MEMBERSHIP_QUERY
from 192.168.2.1 to 224.0.0.1
[ 2008/10/06 14:24:24 TRACE xorp_igmp MLD6IGMP ] RX IGMP_MEMBERSHIP_QUERY
from 192.168.2.1 to 224.0.0.1 on vif eth0
[ 2008/10/06 14:24:26 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.2 to 224.0.0.251 on vif eth0
[ 2008/10/06 14:24:30 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.1 to 224.0.0.2 on vif eth0
[ 2008/10/06 14:24:32 TRACE xorp_igmp MLD6IGMP ] RX
IGMP_V2_MEMBERSHIP_REPORT from 192.168.2.1 to 224.0.0.22 on vif eth0
Then I start sending IGMP Report message to group multicast address on the
eth0:
labo at DOL2400:~/etc/xorp$ sudo tcpdump -i eth0 -n -vvv
[sudo] password for labo:
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96
bytes
15:53:14.959119 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:53:22.593183 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:53:27.873692 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:53:57.049679 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 224.0.0.2: igmp leave 239.7.7.7
15:53:59.061554 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:53:59.446758 IP (tos 0xc0, ttl 1, id 31304, offset 0, flags [none], proto
IGMP (2), length 32, options (RA)) 192.168.2.1 > 224.0.0.1: igmp query v2
15:54:00.874230 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.1 > 224.0.0.251: igmp v2 report
224.0.0.251
15:54:04.947704 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:54:06.242220 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.1 > 224.0.0.2: igmp v2 report
224.0.0.2
15:54:09.086227 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.1 > 224.0.0.22: igmp v2 report
224.0.0.22
15:54:26.153357 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 224.0.0.2: igmp leave 239.7.7.7
15:54:33.163695 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:54:41.247102 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:54:41.654394 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:54:53.184916 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 224.0.0.2: igmp leave 239.7.7.7
15:55:09.221425 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:55:11.918001 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 239.7.7.7: igmp v2 report
239.7.7.7
15:55:12.668454 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 224.0.0.2: igmp leave 239.7.7.7
15:55:16.833821 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 224.7.7.7: igmp v2 report
224.7.7.7
15:55:16.973124 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 224.7.7.7: igmp v2 report
224.7.7.7
15:55:23.657583 IP (tos 0xc0, ttl 1, id 0, offset 0, flags [DF], proto IGMP
(2), length 32, options (RA)) 192.168.2.2 > 224.7.7.7: igmp v2 report
224.7.7.7
21 packets captured
21 packets received by filter
0 packets dropped by kernel
But my Linux Xorp Router doesn't want to take my group add membership to
239.7.7.7 or 224.7.7.7
labo at DOL2400:~/etc/xorp$ netstat -gn
IPv6/Adhésions au groupe IPv4
Interface RefCnt Group
--------------- ------ ---------------------
lo 1 224.0.0.1
eth1 1 224.0.0.251
eth1 1 224.0.0.1
eth0 1 224.0.0.22
eth0 1 224.0.0.2
eth0 1 224.0.0.251
eth0 2 224.0.0.1
lo 1 ff02::1
eth1 1 ff02::1:ff58:c5f3
eth1 1 ff02::1
eth0 1 ff02::1:ff4b:2d00
eth0 1 ff02::1
labo at DOL2400> show igmp group
Interface Group Source LastReported Timeout V State
eth0 224.0.0.2 0.0.0.0 192.168.2.1 180 2 E
eth0 224.0.0.22 0.0.0.0 192.168.2.1 183 2 E
eth0 224.0.0.251 0.0.0.0 192.168.2.1 174 2 E
labo at DOL2400> show igmp interface
Interface State Querier Timeout Version Groups
eth0 UP 192.168.2.1 None 2 3
eth1 DISABLED 100.0.0.1 None 2 0
labo at DOL2400>
Is there any configuration to do on the Xorp Router or in Linux
configuration?
Many thanks for your advise.
Regards,
Leonard
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