<div dir="ltr">Can you ping between the pertinent interfaces? In other words, did you verify reachability between 192.168.1.1 and 192.168.1.0? BTW, I would avoid using the .0 address on a /24. Historically, this has represented the subnet and not one of the addresses on the subnet. There are circumstances it makes sense (/31 addressing for example) but is normally not done, at least as far as I know.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Aug 21, 2020 at 3:08 PM Moritz Warning <<a href="mailto:moritzwarning@web.de">moritzwarning@web.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
I am a newbie with frr/ospf. My aim is to run two ospfd instances in a Linux network namesspace each and let them talk to each other via a virtual link (interface called uplink).<br>
<br>
My test setup is attached. But I do not see any traffic. This is probably some basic configuration error. I did have a look at the documentation, but it did not seem to cover such simple setups.<br>
A few pointer in the right direction would be helpful.<br>
<br>
thanks,<br>
mwarning<br>
<br>
<br>
$ ip netns add ns-0<br>
$ ip netns add ns-1<br>
<br>
# Node 0:<br>
<br>
$ sudo ip netns exec ns-0 ip a<br>
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000<br>
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00<br>
inet <a href="http://127.0.0.1/8" rel="noreferrer" target="_blank">127.0.0.1/8</a> scope host lo<br>
valid_lft forever preferred_lft forever<br>
inet6 ::1/128 scope host<br>
valid_lft forever preferred_lft forever<br>
4: uplink@if3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000<br>
link/ether ce:e6:b3:5d:d3:70 brd ff:ff:ff:ff:ff:ff link-netns switch<br>
inet <a href="http://192.168.1.0/24" rel="noreferrer" target="_blank">192.168.1.0/24</a> scope global uplink<br>
valid_lft forever preferred_lft forever<br>
inet6 fe80::cce6:b3ff:fe5d:d370/64 scope link<br>
valid_lft forever preferred_lft forever<br>
<br>
$ cat ospf0.conf<br>
router ospf<br>
ospf router-id 192.168.1.0<br>
network <a href="http://192.168.1.0/24" rel="noreferrer" target="_blank">192.168.1.0/24</a> area 1<br>
<br>
$ sudo ip netns exec ns-0 ospfd --terminal -f ./ospf0.conf -i /run/frr/ospfd0.pid<br>
<br>
<br>
# Node 1:<br>
<br>
$ sudo ip netns exec ns-1 ip a<br>
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000<br>
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00<br>
inet <a href="http://127.0.0.1/8" rel="noreferrer" target="_blank">127.0.0.1/8</a> scope host lo<br>
valid_lft forever preferred_lft forever<br>
inet6 ::1/128 scope host<br>
valid_lft forever preferred_lft forever<br>
7: uplink@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000<br>
link/ether 12:45:ca:46:19:52 brd ff:ff:ff:ff:ff:ff link-netns switch<br>
inet <a href="http://192.168.1.1/24" rel="noreferrer" target="_blank">192.168.1.1/24</a> scope global uplink<br>
valid_lft forever preferred_lft forever<br>
inet6 fe80::1045:caff:fe46:1952/64 scope link<br>
valid_lft forever preferred_lft forever<br>
<br>
$ cat ospf1.conf<br>
router ospf<br>
ospf router-id 192.168.1.1<br>
network <a href="http://192.168.1.0/24" rel="noreferrer" target="_blank">192.168.1.0/24</a> area<br>
<br>
$ sudo ip netns exec ns-1 ospfd --terminal -f ./ospf1.conf -i /run/frr/ospfd1.pid<br>
<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Don Slice<div>Cumulus Networks</div></div></div>