neutron

can't get IP when I working with GRE

Asked by li,chen

Hi list,

I'm working under Centos 6.4 + Havana.

I have three nodes working:

server node: running neutron-server

network node: running neutron-openvswitch-agent and neutron-dhcp-agent

compute node: running neutron-openvswitch-agent

I created a gre network and booted a instance successfully.

No error can be found in log.

But, my instance can't get IP from dhcp agent.

At network node, I can observed observed the DHCP request can be received, but it complains can't reach the ICMP host :

tcpdump -i eth4

14:31:51.314974 IP 192.101.11.102 > 192.101.11.201: GREv0, key=0x1, length 350: IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from fa:16:3e:73:dc:7a (oui Unknown), length 300

14:31:51.315028 IP 192.101.11.201 > 192.101.11.102: ICMP host 192.101.11.201 unreachable - admin prohibited, length 378

Anyone know why this happen ??????

Thanks.

-chen

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Salvatore Orlando (salvatore-orlando) said : 		#1

A firewall is probably blocking the inbound connections to 192.101.11.102; this might explain the admin prohibited reply.
Check whether inbound GRE is allowed on this host.

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