Hi,
Thanks for the answers. I confirm that the "ovs-ofctl --strict del-flows br-tun
priority=1" works.
Here I have another question about gre port traffic:
I have two machines with two bridges on each host. They are connected by one
Ethernet core directly:
br-int ---- br-tun <----------------------> br-tun ------br-int
HostA:
[root@robinlinux ~]# ovs-vsctl show
Bridge br-tun
Port patch-int
Interface patch-int
type: patch
options: {peer=patch-tun}
Port br-tun
Interface br-tun
type: internal
Port "gre-0"
Interface "gre-0"
type: gre
options: {remote_ip="192.168.1.90"}
Bridge br-int
Port br-int
tag: 1
Interface br-int
type: internal
Port patch-tun
Interface patch-tun
type: patch
options: {peer=patch-int}
I set br-int to have ip 8.8.8.1/24
HostB:
Bridge br-tun
Port patch-int
Interface patch-int
type: patch
options: {peer=patch-tun}
Port br-tun
Interface br-tun
type: internal
Port "gre-0"
Interface "gre-0"
type: gre
options: {remote_ip="192.168.1.91"}
Bridge br-int
Port br-int
tag: 1
Interface br-int
type: internal
Port patch-tun
Interface patch-tun
type: patch
options: {peer=patch-int}
I set br-int to have ip 8.8.8.2/24
Flows on hosta, (hostb has the same):
[root@robinlinux ~]# ovs-ofctl dump-flows br-int
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=2029.793s, table=0, n_packets=184, n_bytes=38048,
priority=1 actions=NORMAL
[root@robinlinux ~]# ovs-ofctl dump-flows br-tun
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=2067.207s, table=0, n_packets=0, n_bytes=0,
priority=3,tun_id=0x1 actions=mod_vlan_vid:1,output:1
cookie=0x0, duration=2067.23s, table=0, n_packets=48, n_bytes=11448,
priority=4,in_port=1,dl_vlan=1 actions=set_tunnel:0x1,NORMAL
cookie=0x0, duration=446.121s, table=0, n_packets=8, n_bytes=592, priority=1
actions=drop
[root@robinlinux ~]# ovs-ofctl show br-tun
OFPT_FEATURES_REPLY (xid=0x1): ver:0x1, dpid:000082d76143ef41
n_tables:255, n_buffers:256
features: capabilities:0xc7, actions:0xfff
1(patch-int): addr:5a:a4:82:bd:a5:21
config: 0
state: 0
4(gre-0): addr:7a:1b:ac:9b:d7:08
config: 0
state: 0
LOCAL(br-tun): addr:82:d7:61:43:ef:41
config: PORT_DOWN
state: LINK_DOWN
OFPT_GET_CONFIG_REPLY (xid=0x3): frags=normal miss_send_len=0
How can I add flows to allow traffic go in/out gre port?
I can ping each other if I change the drop rule of br-tun into normal rule.
Thanks
Yong Sheng Gong
----- Original Message -----
From: Justin Pettit <jpet...@nicira.com>
To: Ben Pfaff <b...@nicira.com>
Cc: gong ys <gong_ys2...@yahoo.com.cn>; "dev@openvswitch.org"
<dev@openvswitch.org>; "gong...@cn.ibm.com" <gong...@cn.ibm.com>
Sent: Thursday, May 10, 2012 12:41 AM
Subject: Re: [ovs-dev] Ask for help to remove a flow
On May 9, 2012, at 9:23 AM, Ben Pfaff wrote:
> On Wed, May 09, 2012 at 01:37:38PM +0800, gong ys wrote:
>> [root@robinlinux ~]# ovs-ofctl dump-flows br-tun
>> NXST_FLOW reply (xid=0x4):
>> cookie=0x0, duration=2267.877s, table=0, n_packets=0, n_bytes=0,
>>priority=3,tun_id=0x2 actions=mod_vlan_vid:1,output:1
>> cookie=0x0, duration=2267.901s, table=0, n_packets=75, n_bytes=24062,
>>priority=4,in_port=1,dl_vlan=1 actions=set_tunnel:0x2,NORMAL
>> cookie=0x0, duration=2270.179s, table=0, n_packets=447, n_bytes=146822,
>>priority=1 actions=drop
>> [root@robinlinux ~]# ovs-ofctl del-flows br-tun priority=1
>> ovs-ofctl: unknown keyword priority
>
> OpenFlow does not support deleting all the flows with a particular
> priority. That is why ovs-ofctl does not let you try to do it.
Ben is of course correct. "--strict" works on the example you gave, but that's
just because the flow with priority 1 has an empty match. Sorry about the
confusion.
--Justin
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