[Openstack-operators] [openstack-dev] Fwd: FOLSOM: Reachability across subnets

孙玉新 dragonetail at gmail.com
Wed Nov 28 15:37:53 UTC 2012


It seems no security group set for your VMs.

Please set security group to allow ping + ssh for VMs, e.g. for one vm with
IP 10.10.10.3.
Then try to ping  10.10.10.3 from one vm in 20 subnet.

Joey.

在 2012年11月23日星期五,Shyam Goud 写道:

> All,
>
> Under one Tenant created 1 network with 2 subnets [10.10.10.0/24 and
> 20.20.20.0/24] and 1 Router with 2 interfaces attached to corresponding
> subnets.
>
> 1. Ping b/w same subnet VMs successful.
> 2. Ping to all Router/DHCP (10.10.10.1 & 2/20.20.20.1 & 2) from both
> subnet VMs is successful
> 3. Ping across subnet VMs fails.
>
> Am I missing something here, to reach across subnets ?
>
> ++++++++++++ Router's routing table +++++++++++++
> controller-desktop:~# ip netns exec
> qrouter-f3554f15-78c0-4402-**8df5-55ebb8da3f4c route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref Use Iface
> 10.10.10.0      0.0.0.0         255.255.255.0   U     0 0        0
> qr-ff10b98d-55
> 20.20.20.0      0.0.0.0         255.255.255.0   U     0 0        0
> qr-c5c00091-e4
> root at controller-desktop:~#
> ++++++++++++++++++++++++++++++**+++++++++++++++++++
>
> Thanks,
> Shyam.
>
>
>
>
>
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