Openflow：主机无法 ping 100% 丢包 - miniedit

Question

我用 Miniedit 做了这个拓扑：

这些是我在终端中应用命令的一些结果：

mininet> net
h8 h8-eth0:s2-eth1
h7 h7-eth0:s2-eth5
h9 h9-eth0:s3-eth3
h5 h5-eth0:s1-eth7
h1 h1-eth0:s1-eth3
h6 h6-eth0:s2-eth4
h3 h3-eth0:s1-eth5
h10 h10-eth0:s3-eth4
h2 h2-eth0:s1-eth4
h4 h4-eth0:s1-eth6
s2 lo:  s2-eth1:h8-eth0 s2-eth2:s1-eth1 s2-eth3:s3-eth1 s2-eth4:h6-eth0 s2-eth5:h7-eth0
s3 lo:  s3-eth1:s2-eth3 s3-eth2:s1-eth2 s3-eth3:h9-eth0 s3-eth4:h10-eth0
s1 lo:  s1-eth1:s2-eth2 s1-eth2:s3-eth2 s1-eth3:h1-eth0 s1-eth4:h2-eth0 s1-eth5:h3-eth0 s1-eth6:h4-eth0 s1-eth7:h5-eth0
c0
mininet>

s1 ovs-vsctl 列表控制器

mininet> s1 ovs-vsctl list controller
_uuid               : 57eb29e8-7dad-4553-976f-13a9630330de
connection_mode     : []
controller_burst_limit: []
controller_rate_limit: []
enable_async_messages: []
external_ids        : {}
inactivity_probe    : []
is_connected        : true
local_gateway       : []
local_ip            : []
local_netmask       : []
max_backoff         : []
other_config        : {}
role                : other
status              : {sec_since_connect="157", state=ACTIVE}
target              : "tcp:127.0.0.1:6633"

_uuid               : f547e8ed-42cc-4c4f-ac77-cd79d5703d9a
connection_mode     : []
controller_burst_limit: []
controller_rate_limit: []
enable_async_messages: []
external_ids        : {}
inactivity_probe    : []
is_connected        : true
local_gateway       : []
local_ip            : []
local_netmask       : []
max_backoff         : []
other_config        : {}
role                : other
status              : {sec_since_connect="157", state=ACTIVE}
target              : "tcp:127.0.0.1:6633"

_uuid               : 7da67055-8898-437c-a51e-3f6fa19dc102
connection_mode     : []
controller_burst_limit: []
controller_rate_limit: []
enable_async_messages: []
external_ids        : {}
inactivity_probe    : []
is_connected        : true
local_gateway       : []
local_ip            : []
local_netmask       : []
max_backoff         : []
other_config        : {}
role                : other
status              : {sec_since_connect="157", state=ACTIVE}
target              : "tcp:127.0.0.1:6633"
mininet>

s1 ovs-ofctl 显示 "s1"

mininet> s1 ovs-ofctl show "s1"
OFPT_FEATURES_REPLY (xid=0x2): dpid:0000000000000001
n_tables:254, n_buffers:256
capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
actions: OUTPUT SET_VLAN_VID SET_VLAN_PCP STRIP_VLAN SET_DL_SRC SET_DL_DST SET_NW_SRC SET_NW_DST SET_NW_TOS SET_TP_SRC SET_TP_DST ENQUEUE
 1(s1-eth1): addr:76:1a:b6:a8:6b:e7
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 2(s1-eth2): addr:6a:d8:77:cb:8e:9b
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 3(s1-eth3): addr:3e:4a:6f:b2:fc:c4
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 4(s1-eth4): addr:26:bf:ee:5b:12:30
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 5(s1-eth5): addr:5e:6b:2e:d1:99:93
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 6(s1-eth6): addr:0e:c0:ef:25:01:72
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 7(s1-eth7): addr:be:e2:a5:5f:06:c3
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 LOCAL(s1): addr:aa:a0:03:ba:75:44
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0
mininet>

这是 h1 和 h2 之间的 ping 例如：

mininet> h1 ping h2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
From 10.0.0.1 icmp_seq=1 Destination Host Unreachable
From 10.0.0.1 icmp_seq=2 Destination Host Unreachable
From 10.0.0.1 icmp_seq=3 Destination Host Unreachable
From 10.0.0.1 icmp_seq=4 Destination Host Unreachable
From 10.0.0.1 icmp_seq=5 Destination Host Unreachable
From 10.0.0.1 icmp_seq=6 Destination Host Unreachable
^C
--- 10.0.0.2 ping statistics ---
9 packets transmitted, 0 received, +6 errors, 100% packet loss, time 8032ms
pipe 3
mininet>

我为每个主机设置了一个 IP 地址：h1：10.0.0.1，h2：10.0.0.2 ... 有什么想法吗？

Answer 1

我错了拓扑！使它不起作用的是 S1 和 S3 之间的 link。删除后，一切正常。没有启用生成树所以主机之间的网络不会连通是正常的。

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