Reference: http://www.juniper.net/techpubs/en_US/junos11.4/topics/topic-map/mcast-mld.html login: root passwd: root123 root@% cli root> configure root# Entering configuration mode [edit] lab# edit protocols [edit protocols] lab# set mld ? Possible completions: <[Enter]> Execute this command accounting Enable join and leave event notification apply-groups Groups from which to inherit configuration data apply-groups-except Dont inherit configuration data from these groups interface Interface options for MLD query-interval When to send host query messages (1..1024 seconds) query-last-member-interval When to send group query messages (seconds) query-response-interval How long to wait for a host query response (seconds) robust-count Expected packet loss on a subnet (2.

How to config MLD on H3C enable MLD 1 2 3 4 system-view multicast ipv6 routing-enable interface interface-type interface-number mld enable Gloabl MLD version config 1 2 3 system-view mld version version-number Interface MLD version config 1 2 3 system-view interface interface-type interface-number mld version version-number Static gourp in 1 2 3 system-view interface interface-type interface-number mld static-group ipv6-group-address [ source ipv6-source-address ] Group limit 1 2 3 system-view interface

5 Linux / Unix Commands For Connecting To The Serial Console Find out information about your serial ports 1 2 3 $ dmesg | grep tty [ 0.000000] console [tty0] enabled [ 1.409184] 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A #1 cu command The cu command is used to call up another system and act as a dial in terminal. cu command is installed on many Unix like systems including OpenBSD/AIX/Solaris and so on.

Three tools to show network brandwith under linux cmd Iftop : Display brandwidth by host(address) $ iftop –help iftop: unknown option – iftop: display bandwidth usage on an interface by host Synopsis: iftop -h | [-npblNBP] [-i interface] [-f filter code] [-F net/mask] [-G net6/mask6] -h display this message -n dont do hostname lookups -N dont convert port numbers to services -p run in promiscuous mode (show traffic between other hosts on the same network segment) -b dont display a bar graph of traffic -B Display bandwidth in bytes -i interface listen on named interface -f filter code use filter code to select packets to count (default: none, but only IP packets are counted) -F net/mask show traffic flows in/out of IPv4 network -G net6/mask6 show traffic flows in/out of IPv6 network -l display and count link-local IPv6 traffic (default: off) -P show ports as well as hosts -m limit sets the upper limit for the bandwidth scale -c config file specifies an alternative configuration file

=== Sed 多行匹配 === $ cat tmp abc def $ sed ‘{N;s/abc\ndef/123\n456/}’ tmp $ cat tmp 123 456 Ref: http://kodango.com/sed-and-awk-notes-part-4 === Sed Usage sed -e ’s/[^ ]* //’ file //删除文本文件第一列 sed ‘1,3d’ file //删除1-3行 sed ‘/[Aa]bc/p’ file //打印包含Abc或者ab