Hello fellow tinkerers, geeks, labrats, sys- and network admins,
I apologize in advance:
* If there is a similar question already, I've searched the forum but decided to post a new question
* For the long post
Problem:Multicast traffic doesn't work between two Olive images I'm running on OSX, connected via a bridge interface via my OSX host.
Unicast works (BGP and routing works) but multicast traffic get dropped, it seems, by my system.
I'm running:So I've installed the TunTap package, and I've setup a bridge interface between my two Olive's like so:
Create bridge interface and add tap interfaces:Code:
sudo ifconfig bridge10 create
sudo ifconfig bridge10 up addm tap0
sudo ifconfig bridge10 up addm tap1
Configure IP on bridge interface:Code:
sudo ifconfig bridge10 10.10.10.254/24 up
Add route for multicast traffic:Quote:
sudo route add -net 224.0.0.0/24 -interface bridge10
So the IP config is as follows:Code:
Olive1 interface em0 = 10.10.10.1
Olive2 interface em0 = 10.10.10.2
OSX interface bridge10 = 10.10.10.254
Now, with tcpdump I can see OSPF hello packets going out the em0 interface of each Olive, and I see ingress packets on my OSX bridge10 interface I created. But then the packets of the first Olive, never reach the second Olive, and vice versa.
Capture from Olive1:Code:
12:27:16.538889 Out IP 10.10.10.1 > 224.0.0.5: OSPFv2, Hello, length 44
12:27:26.214762 Out IP 10.10.10.1 > 224.0.0.5: OSPFv2, Hello, length 44
12:27:32.226205 Out IP 10.10.10.1 > 224.0.0.5: OSPFv2, Hello, length 44
Capture from Olive2:Code:
12:29:06.334229 Out IP 10.10.10.2 > 224.0.0.5: OSPFv2, Hello, length 44
12:29:13.594172 Out IP 10.10.10.2 > 224.0.0.5: OSPFv2, Hello, length 44
12:29:23.250220 Out IP 10.10.10.2 > 224.0.0.5: OSPFv2, Hello, length 44
Capture from OSX brige10 interface:Code:
12:31:08.737743 IP 10.10.10.2 > 224.0.0.5: OSPFv2, Hello, length 44
12:31:12.888509 IP 10.10.10.1 > 224.0.0.5: OSPFv2, Hello, length 44
12:31:25.521446 IP 10.10.10.2 > 224.0.0.5: OSPFv2, Hello, length 44
12:31:28.225551 IP 10.10.10.1 > 224.0.0.5: OSPFv2, Hello, length 44
12:31:35.487982 IP 10.10.10.2 > 224.0.0.5: OSPFv2, Hello, length 44
12:31:35.916790 IP 10.10.10.1 > 224.0.0.5: OSPFv2, Hello, length 44
For what it's worth:* The OSX firewall is disabled for the record.
* I can ping all IP's from all interfaces (meaning unicast address 10.10.10.x on both em0's and the bridge10 interface)
Output of ifconfig:Code:
tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
ether 1a:37:5b:b1:6d:14
open (pid 92860)
tap1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
ether 06:0d:2e:3d:33:57
open (pid 93150)
bridge10: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=3<RXCSUM,TXCSUM>
ether 7a:31:c1:bc:21:0a
inet 10.10.10.254 netmask 0xffffff00 broadcast 10.10.10.255
Configuration:
id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0
maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200
root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0
ipfilter disabled flags 0x2
member: tap0 flags=3<LEARNING,DISCOVER>
ifmaxaddr 0 port 12 priority 0 path cost 0
member: tap1 flags=3<LEARNING,DISCOVER>
ifmaxaddr 0 port 13 priority 0 path cost 0
media: <unknown type>
status: inactive
I've booted Olive1 ('R1') in Qemu with:Code:
sudo qemu-system-x86_64 R1.img -m 96 -nographic -serial telnet::2001,server,nowait \
-localtime -net nic,vlan=1,macaddr=00:aa:00:60:00:01,model=e1000 \
-net tap,vlan=1,ifname=tap0,script=no
I've booted Olive2 ('R2') in Qemu with:Code:
sudo qemu-system-x86_64 R2.img -m 96 -nographic -serial telnet::2002,server,nowait \
-localtime -net nic,vlan=1,macaddr=00:aa:00:60:00:02,model=e1000 \
-net tap,vlan=1,ifname=tap1,script=no
Can anyone think of a solution?
Being able to run protocols that run on multicast like OSPF and VRRP would totally rock... As soon as this works, I want to experiment with running the images under GNS3/Dynamips.
Any help would be much appreciated!
Thanks!
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