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My router both interfaces are Down

asked 2015-02-21 01:54:02 -0500


please check my router interface

i dont know why im getting both the interfaces are

down and my base machine also not getting the internet

only ping the LAN but not WAN

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Post ovs-vsctl show and ifconfig on Network node.

dbaxps gravatar imagedbaxps ( 2015-02-21 04:19:58 -0500 )edit

Make sure you do the following :

  1. Add bridge br-ex

  2. Specify br-ex in /etc/neutron/l3_agent.ini external_network_bridge = br-ex

  3. Restart neutron l3 agent

Hope this helps!!!

teju gravatar imageteju ( 2015-02-23 00:55:33 -0500 )edit

2 answers

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answered 2015-02-24 00:46:01 -0500

If the module's hardware information is not shown in the show diag, reseat the hardware module. You can also install the module in a different slot. Some modules are not hot swappable; reload the router after you install the module. If the module's hardware information is shown in the show diag but you are not able to see the module interfaces in the show run or show IP interface brief output, check the hardware installation documentation. Some modules need router configuration after the installation. For any writing kind of help you can use this (essay writing service review) for getting a best support.

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answered 2015-02-23 23:26:58 -0500

madhank gravatar image

updated 2015-02-23 23:34:31 -0500

check have you done this on your vi /etc/neutron/plugins/ml2/ml2_conf.ini


type_drivers = flat,gre

tenant_network_types = gre

mechanism_drivers = openvswitch


flat_networks = external


tunnel_id_ranges = 1:1000


enable_security_group = True

enable_ipset = True

firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver



enable_tunneling = True

bridge_mappings = external:br-ex

save the file

If you already configured,Check your /etc/network/interface do as below

change your external bridge interface like below if

auto eth2

iface eth2 inet manual

up ip address add 0/0 dev $IFACE

up ip link set $IFACE up

down ip link set $IFACE down

auto br-ex

iface br-ex inet static






save it and restart the neutron services

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Asked: 2015-02-21 01:54:02 -0500

Seen: 1,476 times

Last updated: Feb 23 '15