Shulou(Shulou.com)06/02 Report--

Power of 2:

2¹=2 2²=4 2³=8 2⁴=16 2⁵=32

2⁶=64 2⁷=128 2⁸=256 2⁹=512 2¹⁰=1024

OSPF authentication command:

display ospf lsdb View ospf database information

display ospf peer brief View OSPF neighbor table

display ospf brief View information about the ospf area

display ip routing-table View ospf routing table

display ip routing View breakdown types of ospf routing

display ospf interface gi0/0/0 View interface information under ospf

display ip routing-tabkle protocol ospf Display IP routing protocol OSPF

display ospf vlink Displays the neighbor state established by OSPF vlink

Next hop: ip router-static destination address subnet mask Next hop address

Single arm routing: intface gi0/0/0.1

Dot1q termination vid 10 encapsulates dot1q protocol, belonging to vlan 10

Ip add 192.168.12.1 255.255.255.0 Configure IP address

Arp broadcast enable Enable subinterface arp broadcast

Link Bundling: (Cisco)

Manual: interface gi0/0/0

Channel-group 1 mode on

Automatic: interface gi0/0/0

Channel-protocol lacp (public)/pagp(private)

Channel-group 1 mode (active/passive)

Link bundling:

[SW1]intface-Trunk 1 //Create Eth-Trunk link aggregation port. and named 1.

[SW1]inte0/0/10 //Enter interface

[SW1]-Ethernet0/0/10]eth-trunk1 //Add default interface to link aggregation port created

[SW1]interface Eth-trunk1 //Enter eth-trunk 1 group

port link-type trunk //trunk link

port trunk allow-pass vlan all //Allow all vlan to pass

[Huawei]display eth-trunk //View Eth-trunk link aggregation ports

OSPF address summary:

Configuration: (Class 3 LSA Summary)

ospf 1

area 1

abr-summary 192.168.0.0 255.255.0.0

display ospf lsdb (view ospf database information)(save restart, verify)

Configuration: (summary of 5 types of LSA)

ospf 1

asbr-summary 192.168.0.0 255.255.0.0）

display ospf lsdb View information of ospf database (save restart, verify)

System-view Enter the system view

Sysname Modify device name

Gigabit Ethernet interface

Ethernet interface Access to 100MB Ethernet interface

ip address +ip+ subnet mask configure IP address

VLAN+ number Create VLAN number

vlan batch Create VLANs in bulk

ip route-static +ip+ subnet mask + egress address configure next hop (configure static route)

port link-type access Set VLAN link

port default+vlan number Add port number to VLAN

port link-type trunk Set VLAN link

port trunk allow-pass+VLAN number Adds the port number to the VLAN

port hybrid pvid vlan +VLAN number Set VLAN number for incoming data on this port

port hybrid untagged vlan +VLAN number Untag (VLAN number) traffic coming out of this port

port hybrid tagged vlan+vlan number Tagging incoming traffic on this port (VLAN number)

display vlan View VLAN information

display port vlan View VLAN pvid tag information

Default entry is User View:

system-view Enter system view:[Huawei]

Ethernet interface 0/0/1 Enter port view: [Huawei Ethernet 0/0/1]

quit Back to previous view

Back to User View

Return command Return to user view

User View View Configuration Information

System View View Configuration Information

interface view configure interface parameters

Protocol View Configuring Routing Protocols

configure hostname sysname (enter name to change)[configure in system view]

View configuration display current-configuration

Display VRP version[View configuration information in user view]

Configure the idle time to automatically exit the configuration interface (the time to automatically exit after a long time of inactivity)

[Huawei]user-interface console0

[Huawei-ui-console0]idle-timeout 100[configure idle time 100 minutes to 100 minutes to automatically exit]

[Huawei-ui-console0]

Modify the number of rows displayed:

system-view

Enter system view, return user view with Ctrl+Z.

[Huawei]user-interface console 0

[Huawei-ui-console0]screen-length 5[display 5 lines at a time Default is display 1 line at a time]

[Huawei-ui-console0]

CSMA/CD

- Carrier sense multiple access with collision detection

MAC address: unicast and multicast, can be used to identify a device and a group of devices in Ethernet

Mac address: There are 48 binary for the composition of 6 bytes, there are two parts composed of the first 24 bits represent the manufacturer identification, the last 24 bits represent the factory date composed of a unique code 8 binary for 1 byte

Distinguish whether mac address is unicast or multicast Look at whether bit 8 is 0 or 1, 0 is physical address (unicast address) 1 is logical address (multicast address) 48 bits are 1 represents broadcast address

Mac address in hexadecimal notation Total 6 groups Broadcast address in hexadecimal notation: All F

Ethernet frame format: preamble, frame start delimiter, destination address, source address, type/length, data, frame check sequence

Frame data: bytes 46-1500 maximum bytes 1500 minimum bytes 46

Preamble and frame start delimiter: Each frame has its own preamble (7 bytes) and delimiter (1 byte)

Destination address: destination mac address (6 bytes)

Source address: Mac address of sender (6 bytes)

Type/Length: 2 bytes

Frame Check Sequence: (4 bytes) Verify integrity of data transmission

Length range of a frame: 64 bytes-1518 bytes (preamble and frame start delimiter are not added)

Frame data length range: 46 bytes-1500 bytes

Save configuration: save

Command: reboot

Clear configuration: reset saved-configuration

http port 80 https port 443

pop3 port 110 fmtp port 25

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