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ecmh sends no data to the upstream interface
![[de]](/s/countries/de.gif) Shadow Hawkins on Monday, 28 February 2005 07:06:23
Hi, i have a problem while using ecmh.
If i send multicast data ecmh does not forward this traffic to the upstream interface, receiving multicast data works fine.
I've startet echm with "-i 6in4 -v -p".
The statistics looks like this:
Interface: eth0
Index number : 2
MTU : 1500
Interface Type : Ethernet (1)
Link-local address : fe80::204:75ff:fe97:ccfb
Global unicast address : 2001:6f8:1368::1
MLD version : v2
Packets received : 8701
Packets sent : 7156
Bytes received : 946726
Bytes sent : 3647825
ICMP's received : 9
ICMP's sent : 2
Interface: eth1
Index number : 3
MTU : 1500
Interface Type : Ethernet (1)
Link-local address : ::
Global unicast address : ::
MLD version : none
Packets received : 12212
Packets sent : 19
Bytes received : 8769391
Bytes sent : 1400
ICMP's received : 0
ICMP's sent : 19
Interface: 6in4
Index number : 5
MTU : 1280
Interface Type : sit (776)
Link-local address : fe80::c0a8:1
Global unicast address : 2001:6f8:900:48d::2
MLD version : v2
Packets received : 12120
Packets sent : 9
Bytes received : 8510618
Bytes sent : 804
ICMP's received : 2
ICMP's sent : 9
*** Interface Dump (end - 3 interfaces)
eth0 is my lan.
eth1 is another lan and also the connection to the ipv4 router.
6in4 is my connection to sixxs.
Routes look like this:
2001:6f8:900:48d::/64 via :: dev 6in4 metric 256 mtu 1280 advmss 1220
2001:6f8:1368::/64 dev eth0 metric 256 mtu 1500 advmss 1220
2001:6f8:1368:1::/64 dev eth1 metric 256 mtu 1500 advmss 1220
fe80::/64 dev eth0 metric 256 mtu 1500 advmss 1220
fe80::/64 dev eth1 metric 256 mtu 1500 advmss 1220
fe80::/64 via :: dev 6in4 metric 256 mtu 1280 advmss 1220
ff00::/8 dev 6in4 metric 255 mtu 1280 advmss 1220
ff00::/8 dev eth0 metric 256 mtu 1500 advmss 1220
ff00::/8 dev eth1 metric 256 mtu 1500 advmss 1220
default via 2001:6f8:900:48d::1 dev 6in4 metric 1024 mtu 1280 advmss 1220
(I've compiled ecmh static using a Debian 3.1)
ecmh sends no data to the upstream interface
You should not specify the -i option when the upstream is another ecmh. The upstream option is only when the upstream is a full multicast router, thus one doing PIM and other tricks.
When such a machine sees ecmh's MLD query it will not act as a router anymore and as such will not allow your local ecmh to join any groups.
Note also that ecmh can only distribute data inside a domain of ecmh's, but not to a PIM capable router. This will be solved in the next version though.
ecmh sends no data to the upstream interface
Shadow Hawkins on Tuesday, 01 March 2005 01:28:15
Thank you for your answers! This explains many and answers most of my questions.
Sorry for "bothering" you with my last two eMails. I haven't read your Answer here until now.
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![[ch]](/s/countries/ch.gif)
on Monday, 28 February 2005 15:53:09
Posting is only allowed when you are