· 8 years ago · Dec 21, 2016, 11:50 AM
1# tcpdump -nvvi eth0 icmp
2tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
312:48:06.978550 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto ICMP (1), length 84)
4 x.x.x.x > 192.168.1.100: ICMP echo request, id 34066, seq 1, length 64
512:48:07.977813 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto ICMP (1), length 84)
6 x.x.x.x > 192.168.1.100: ICMP echo request, id 34066, seq 2, length 64
712:48:08.977812 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto ICMP (1), length 84)
8 x.x.x.x > 192.168.1.100: ICMP echo request, id 34066, seq 3, length 64
9enter code here
10
11# arping 192.168.1.1
12ARPING 192.168.1.1 from 192.168.1.1 eth0
13Sent 2 probes (2 broadcast(s))
14Received 0 response(s)
15
16# arping 192.168.1.2
17ARPING 192.168.1.2 from 192.168.1.1 eth0
18Unicast reply from 192.168.1.2 [90:1B:0E:10:BF:E0] 0.589ms
19Unicast reply from 192.168.1.2 [90:1B:0E:10:BF:E0] 0.596ms
20Unicast reply from 192.168.1.2 [90:1B:0E:10:BF:E0] 0.621ms
21Sent 3 probes (1 broadcast(s))
22Received 3 response(s)
23
24# uname -a
25Linux node01.xxxxx 2.6.32-573.12.1.el6.x86_64 #1 SMP Tue Dec 15 21:19:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
26
27# hostname
28node01.xxxxx
29
30
31# ip link
321: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
33 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
342: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
35 link/ether 90:1b:0e:10:bf:cc brd ff:ff:ff:ff:ff:ff
363: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
37 link/ether 90:1b:0e:10:bf:cd brd ff:ff:ff:ff:ff:ff
384: ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2044 qdisc pfifo_fast state UP qlen 256
39 link/infiniband 80:00:00:03:fe:80:00:00:00:00:00:00:00:11:75:00:00:6f:42:ae brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
40
41# ip addr
421: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
43 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
44 inet 127.0.0.1/8 scope host lo
45 inet6 ::1/128 scope host
46 valid_lft forever preferred_lft forever
472: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
48 link/ether 90:1b:0e:10:bf:cc brd ff:ff:ff:ff:ff:ff
49 inet 192.168.1.1/24 brd 192.168.1.255 scope global eth0
50 inet6 fe80::921b:eff:fe10:bfcc/64 scope link
51 valid_lft forever preferred_lft forever
523: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
53 link/ether 90:1b:0e:10:bf:cd brd ff:ff:ff:ff:ff:ff
544: ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2044 qdisc pfifo_fast state UP qlen 256
55 link/infiniband 80:00:00:03:fe:80:00:00:00:00:00:00:00:11:75:00:00:6f:42:ae brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
56 inet 192.168.5.1/24 brd 192.168.5.255 scope global ib0
57 inet6 fe80::211:7500:6f:42ae/64 scope link
58 valid_lft forever preferred_lft forever
59
60# ip route
61192.168.5.0/24 dev ib0 proto kernel scope link src 192.168.5.1
62192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.1
63169.254.0.0/16 dev eth0 scope link metric 1002
64169.254.0.0/16 dev ib0 scope link metric 1004
65default via 192.168.1.100 dev eth0
66
67# ip route show table local
68broadcast 192.168.5.0 dev ib0 proto kernel scope link src 192.168.5.1
69local 192.168.1.1 dev eth0 proto kernel scope host src 192.168.1.1
70broadcast 192.168.1.0 dev eth0 proto kernel scope link src 192.168.1.1
71local 192.168.5.1 dev ib0 proto kernel scope host src 192.168.5.1
72broadcast 127.255.255.255 dev lo proto kernel scope link src 127.0.0.1
73broadcast 192.168.5.255 dev ib0 proto kernel scope link src 192.168.5.1
74broadcast 192.168.1.255 dev eth0 proto kernel scope link src 192.168.1.1
75broadcast 127.0.0.0 dev lo proto kernel scope link src 127.0.0.1
76local 127.0.0.1 dev lo proto kernel scope host src 127.0.0.1
77local 127.0.0.0/8 dev lo proto kernel scope host src 127.0.0.1
78
79# cat /etc/nsswitch.conf | grep -v "^#"
80passwd: files nis
81shadow: files nis
82group: files nis
83hosts: files nis dns
84bootparams: nisplus [NOTFOUND=return] files
85ethers: files
86netmasks: files
87networks: files
88protocols: files
89rpc: files
90services: files
91netgroup: files nis
92publickey: nisplus
93automount: files nis
94aliases: files nisplus
95
96# cat /etc/hosts
97127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
98::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
99192.168.1.100 master.xxxxx master
100192.168.1.1 node01.xxxxx node01
101192.168.1.2 node02.xxxxx node02
102192.168.1.3 node03.xxxxx node03
103192.168.1.4 node04.xxxxx node04
104192.168.1.5 node05.xxxxx node05
105192.168.1.6 node06.xxxxx node06
106192.168.1.7 node07.xxxxx node07
107192.168.1.8 node08.xxxxx node08
108192.168.1.9 node09.xxxxx node09
109192.168.1.10 node10.xxxxx node10
110192.168.1.11 node11.xxxxx node11
111192.168.1.12 node12.xxxxx node12
112192.168.1.13 node13.xxxxx node13
113192.168.1.14 node14.xxxxx node14
114192.168.1.15 node15.xxxxx node15
115192.168.1.16 node16.xxxxx node16
116192.168.1.17 node17.xxxxx node17
117192.168.1.18 node18.xxxxx node18
118192.168.1.19 node19.xxxxx node19
119192.168.1.20 node20.xxxxx node20
120192.168.1.21 node21.xxxxx node21
121192.168.1.22 node22.xxxxx node22
122192.168.1.23 node23.xxxxx node23
123192.168.1.24 node24.xxxxx node24
124
125#Infiniband
126192.168.5.100 master-ib.xxxxx master-ib
127192.168.5.1 node01-ib.xxxxx node01-ib
128192.168.5.2 node02-ib.xxxxx node02-ib
129192.168.5.3 node03-ib.xxxxx node03-ib
130192.168.5.4 node04-ib.xxxxx node04-ib
131192.168.5.5 node05-ib.xxxxx node05-ib
132192.168.5.6 node06-ib.xxxxx node06-ib
133192.168.5.7 node07-ib.xxxxx node07-ib
134192.168.5.8 node08-ib.xxxxx node08-ib
135192.168.5.9 node09-ib.xxxxx node09-ib
136192.168.5.10 node10-ib.xxxxx node10-ib
137192.168.5.11 node11-ib.xxxxx node11-ib
138192.168.5.12 node12-ib.xxxxx node12-ib
139192.168.5.13 node13-ib.xxxxx node13-ib
140192.168.5.14 node14-ib.xxxxx node14-ib
141192.168.5.15 node15-ib.xxxxx node15-ib
142192.168.5.16 node16-ib.xxxxx node16-ib
143192.168.5.17 node17-ib.xxxxx node17-ib
144192.168.5.18 node18-ib.xxxxx node18-ib
145192.168.5.19 node19-ib.xxxxx node19-ib
146192.168.5.20 node20-ib.xxxxx node20-ib
147192.168.5.21 node21-ib.xxxxx node21-ib
148192.168.5.22 node22-ib.xxxxx node22-ib
149192.168.5.23 node23-ib.xxxxx node23-ib
150192.168.5.24 node24-ib.xxxxx node24-ib
151
152#IPMI
153192.168.10.1 node01-ipmi.xxxxx node01-ipmi
154192.168.10.2 node02-ipmi.xxxxx node02-ipmi
155192.168.10.3 node03-ipmi.xxxxx node03-ipmi
156192.168.10.4 node04-ipmi.xxxxx node04-ipmi
157192.168.10.5 node05-ipmi.xxxxx node05-ipmi
158192.168.10.6 node06-ipmi.xxxxx node06-ipmi
159192.168.10.7 node07-ipmi.xxxxx node07-ipmi
160192.168.10.8 node08-ipmi.xxxxx node08-ipmi
161192.168.10.9 node09-ipmi.xxxxx node09-ipmi
162192.168.10.10 node10-ipmi.xxxxx node10-ipmi
163192.168.10.11 node11-ipmi.xxxxx node11-ipmi
164192.168.10.12 node12-ipmi.xxxxx node12-ipmi
165192.168.10.13 node13-ipmi.xxxxx node13-ipmi
166192.168.10.14 node14-ipmi.xxxxx node14-ipmi
167192.168.10.15 node15-ipmi.xxxxx node15-ipmi
168192.168.10.16 node16-ipmi.xxxxx node16-ipmi
169192.168.10.17 node17-ipmi.xxxxx node17-ipmi
170192.168.10.18 node18-ipmi.xxxxx node18-ipmi
171192.168.10.19 node19-ipmi.xxxxx node19-ipmi
172192.168.10.20 node20-ipmi.xxxxx node20-ipmi
173192.168.10.21 node21-ipmi.xxxxx node21-ipmi
174192.168.10.22 node22-ipmi.xxxxx node22-ipmi
175192.168.10.23 node23-ipmi.xxxxx node23-ipmi
176192.168.10.24 node24-ipmi.xxxxx node24-ipmi
177
178# cat /etc/sysctl.conf | grep -v "^#"
179
180net.ipv4.ip_forward = 0
181net.ipv4.conf.default.rp_filter = 1
182net.ipv4.conf.default.accept_source_route = 0
183kernel.sysrq = 0
184kernel.core_uses_pid = 1
185net.ipv4.tcp_syncookies = 1
186net.bridge.bridge-nf-call-ip6tables = 0
187net.bridge.bridge-nf-call-iptables = 0
188net.bridge.bridge-nf-call-arptables = 0
189kernel.msgmnb = 65536
190kernel.msgmax = 65536
191kernel.shmmax = 68719476736
192kernel.shmall = 4294967296