[openstack-dev] VM instances Can not connect to external

Jeff Cai Jeff_Cai at symantec.com
Fri Sep 27 10:03:35 UTC 2013


Hi,

I set up openstack environment on Ubuntu 12.0.4 with 3 nodes according to the starter guide on docs.openstack.org. Everything works well except that the VM instances cannot connect to outside. Among VM instances they can connect to each other.

Attached the network diagram:

[cid:image024.png at 01CEBBAA.F7DDDD70]

In VM, it can ping the demo-router address 10.5.5.1 (internal) and 10.200.29.33 (external). But it cannot ping out the other external addresses.

Both the public and demo-net network work normally:

Project   Network Name      Subnets Associated                         Shared         Status           Admin State
admin    public                           public-subnet 10.200.29.0/24      No                  Active              Up
demo    demo-net                  demo-net-subnet 10.5.5.0/24     No                  Active              Up

But the port where the demo router is DOWN


(bd10e227)               10.200.29.33     network:router_gateway              DOWN           UP


The port info:

Port
________________________________
Name
None
ID
bd10e227-8f83-4804-9f68-a0e643e451e5
Network ID
d415febb-b387-40e0-9416-32c1b19d5b46<http://10.200.29.31/horizon/project/networks/d415febb-b387-40e0-9416-32c1b19d5b46/detail>
Project ID
-
Fixed IP
IP address: 10.200.29.33, Subnet ID 6781dfdc-508b-46c3-89ce-5624f95448d0
Mac Address
fa:16:3e:e2:b2:b3
Status
DOWN
Admin State
UP
Attached Device
Device Owner: network:router_gateway
Device ID: 5d43330d-c0ee-4bd5-a76f-b15daad1df2e


Could anyone please give me some clues to solve this problem?

Best Regards

Jeff Cai


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