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no communication between internal and external network

asked 2016-09-02 01:12:43 -0500

deepak2112 gravatar image

updated 2016-09-02 01:41:01 -0500

sunnyarora gravatar image
my ext network  => 192.168.52.0/24  gw 192.168.52.2
router gateway ip => 192.168.52.3

internal network => 192.168.100.0/24 gw 192.168.100.1

error is , router gateway is down to external network.(it's juno three node setup) i am able to ping to 192.168.52.3 from outside network. but not able to ping 192.168.52.2 there is no communication between both network.

i executed route from router namespace it shows

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.52.2    0.0.0.0         UG    0      0        0 qg-10f01db4-62
192.168.52.0    0.0.0.0         255.255.255.0   U     0      0        0 qg-10f01db4-62
192.168.100.0   0.0.0.0         255.255.255.0   U     0      0        0 qr-5382da6d-a1

thing is , from within router namespace , iam not able to ping 192.168.52.2. and i am able to ping 192.168.52.3 and all 100 series ip too.

can nyone tell me how to solve this issue. thanks

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answered 2016-09-02 02:08:08 -0500

if your external network as gw 192.168.52.2 your neutron-server must know that, to better explain if you put a neutron router with ip 192.168.52.3 it's next hop must be 192.168.52.2, and this is for instances SNAT traffic (no floating IP), otherwise for instances who have a floaing ip 192.168.52.X they must have 192.168.52.2 gw.

HTH Amedeo

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Asked: 2016-09-02 01:12:43 -0500

Seen: 79 times

Last updated: Sep 02 '16