The MAC address, VLAN, DHCP of the H3C S3600V2 series switches

Question 1: What is the MAC address JD313B price of the the H3C S3600V2 series switches?

Answer 1: The MAC address include: 32K MAC addresses.

Adding of dynamic/static unicast MAC address, multicast MAC address and black hole MAC Address.

Question 2: Does the H3C S3600V2 series switches supports VLAN?

Answer 2: Yes. Supports:4K VLANs (IEEE 802.1Q)

GVRP(GARP VLAN Registration Protocol)

Support Port-based VLAN

Protocol-based VLAN

QinQ

Voice VLAN

Question 3: Does the H3C S3600V2 series switches supports DHCP?

Answer 3: Yes. Supports: DHCP Snooping

DHCP Relay

DHCP Client

DHCP server(EI) JF816A price

DHCP option 82

More information, please view :http://www.christmasonmarsmovie.com/blog/12061

Are you a good buyer for the routers? Optional(buy) elements of the routers

1, The features of the routers

The router is one of the most important HP MSR900 network interconnection devices, which work in the network layer, is used to interconnect different types of network,the router through the routing decision data forwarding, forwarding strategycalled: routing (routing), which is the origin of the router name (router,forward).

Connected and isolated network, different collision domains.

Selection of optimal transport path for data exchange. In the router keeps data -- the routing table associated with a transmission path (Routing Table).Routing table can be set up by the system administrator fixed (static routing table), can also be modified by the system dynamic (dynamic routing table).

The router also usually provides traffic monitoring, access control, firewall andpriority setting, data encryption, address translation, VLan management and other functions.

Although the router can be used for the interconnection between all kinds oflocal area network, however, is mainly used for the interconnection betweenrouters, LAN and WAN at the same time, often need to configure router.

2, How to buy a router

Usually at the time of purchase mainly should attente to the following questions:

(1) management mode: is that users can set the router management by what way.

Router basic management mode is using terminal (HyperTerminal or windows provided by the special configuration line) connected to the router configuration port configuration, users buy a router are generally carried outpreliminary settings for the router to use this way.

(2) multi protocol support: router support which Wan protocol.

The bureau uses different WAN technologies can provide Wan line of differentusers, and users often cannot ensure that it has been using a WAN line,therefore, we WAN protocol which supports the best buy router attention. At present, Wan line telecommunications bureau provides several X.25, frame relay, DDN line, ADSL, so choose the router best consider the actual needs ofthe future enterprise.

(3) the address translation function:

Using the router external connection or the Internet, routers can shieldcompany internal LAN network address conversion function, unified into wide area network address the telecommunication bureau provided by address, so the network external users will not be able to know the internal networkaddress, to prevent the illegal user ids. At the same time, this method also realizes the LAN users through an IP address to access HP MSR20 Internet resources.

More information, please view: http://www.h3network.com

How can I configurate VLAN of the H3C S5500-28C-EI

Question 1: Does the H3CS5500-28C-EI(HP JD377A ) has the function of WEB?

Question 2: Has setted the IP address, it saied that: port GigabitEthernet1/0/1, meaning the port settings to the designated VLAN, setting up the command, not be the intranet, which port should be?

Answer 1 ：No.

Answer 2：The three layer switch sets IP address is to create a VLAN, the virtual interfaceand then enters into the corresponding VLAN, configure the IP address in the VLAN virtual interface,

For example, your computer is connected to the S5500-28C-EI port of the G1/0/13 H3C, you configure a VLAN 10, then create a interface VLAN 10, into the interface VLAN 10, IP address, such as: 192.168.1.1/24, interfacegigabitethernet 1/0/13 finally entered into the VLAN, the G1/0/13 10192.168.1.0/24 network, computer configuration of your IP, you can pingthrough this H3C S5500-28C-EI

Below is the full command:

VLAN 10

Quit

Interface VLAN 10

IP address 192.168.1.1 255.255.255.0

Quit

Interface gigabitethernet 1/0/13

Port access VLAN 10

Quit JD370A price

Then the computer network card IP configuration for the 192.168.1.2/24, Ping192.168.1.10. 

Source: http://www.h3network.com/hp-jd377a-s5500-28c-ei-price_p22.html

Where can the Huawei OSN 1500 used to

When used with the other equipment of Huawei, the OptiX OSN 1500 supports various networking applications, such as the pure packet mode application, hybrid networking application (overlay networking of the packet mode and TDM mode), and pure TDM mode application. By using a proper networking solution, the data service and conventional SDH service can be processed in the optimal manner. Thus, the OptiX OSN 1500 efficiently transmits voice, data, SAN, and video services on the same platform.

The OptiX OSN 1500 is an intelligent optical switching system with universal switch architecture. That is, the OptiX OSN 1500 can be used in packet mode (MPLS based) or in TDM mode. 

The OptiX OSN 1500 uses the built-in WDM technology to transmit several wavelengths over one optical fiber. Huawei Transmission Card In this context, the OptiX OSN 1500 can be interconnected with the WDM equipment.

Source: http://www.huanetwork.com/huawei-osn1500b-price_p3727.html

http://haiong.eklablog.com/

Questions about the Huawei OSN 2500

Question 1: Is the OSN 2500 have the features of MSTP?

Answer 1: Yes, the Huawei OSN 2500 keeps compatible with traditional SDH and MSTP networks, and integrates the SDH, PDH, DDN, Ethernet, WDM, ATM, IMA, and RPR, ESCON, FICON, FC and DVB-ASI (Digital Video Broadcast-Asynchronous Serial Interface) .

Question 2: Does the OSN 2500 compat with the STM-16/4 ?

Answer 2: Yes. The OSN 2500 is STM-16/4 compatible, upgradable from 622M to 2.5G.

Question 3: Does the OSN 2500 has 60G high order and 20G low order cross-connect capability?

Answer 3: Yes.

The OSN 2500 works at the 2.5Gbit/s or 622Mbit/s level, inherits all features of the MSTP technology, keeps compatible with traditional SDH and MSTP networks, and integrates the SDH, PDH, DDN, Ethernet, WDM, ATM, IMA, and RPR, ESCON, FICON, FC and DVB-ASI (Digital Video Broadcast-Asynchronous Serial Interface) .

Source: http://www.huanetwork.com/huawei-osn2500-price_p3728.html

http://momopp.blogdetik.com/

Principle of the H3C three layer switch

Principle of the H3C three layer switch            

The following respectively to JD379A price two network circumstances inter host communication to explain the principle of the three layer switch forwarding.

Network 1 as shown in Figure 12, a communication source, destination host is connected on the same layer three switches, but they are located at differentVLAN (network). For the three layer switch, the two hosts are located within itsdirectly connected network segment, the corresponding IP their routing aredirectly connected route.

Networking 1

Figure 12 marked MAC, IP address, gateway two hosts, and the three layer switch MAC, the different configurations of VLAN three layer interface IP.When PC A launched the ICMP request to the PC B, the process is as follows:(hypothesis three layer switch may not establish any hardware forwardingtable entries)

(1) according to the above description, PC A first to check out the destination IP address 2.1.1.2 (PC B) and they are not in the same segment, so itrequests the gateway address corresponding to the 1.1.1.1 MAC ARP requests;

(2) L3_SW received PC A ARP request, check the request message was the request IP is three layer interface IP on their own, thus sending ARP responseand the three layer interface (MAC S) MAC own contained therein. At the same time it will take the corresponding IP address and MAC address of PC A(1.1.1.2<==>MAC A) relationship of records to the ARP table own to (because the ARP request message contains the sender's IP and MAC);

(3) PC A gateway (L3_SW) ARP response, assembly of the ICMP requestmessage and send the message to the MAC = MAC, S, MAC = MAC A = 1.1.1.2, IP, buy HP JD375A source destination IP = 2.1.1.2;
More information, please view: http://www.h3network.com

Questions about Cisco 2960 series switches

Questions:

1, glc-lh-smd Why I can not connect CRT to cisco 2960?

2, Is there no out port to the Cisco 2960 ACL ?

Answers:

1, Just change A USB drive to have a try.Or use PCMCIA change to COM port, it is more steady.The majority of USB to COM port is not good.

2, Yes. This is normal, because the limit of Cisco.

Normally, the PACL is no! ws-c2960s-48fps-l Because there is no need to set the direction! Because IN PORT can replace!

Does H3C S3600-SI can realize the port binding MAC address?

Does H3C S3600-SI can realize the port binding MAC address?

Yes. Here is the configuration:

2.1.1 am user-bind

[command] buy JG299A

System view:

Am user-bind mac-addr mac-address ip-addr IP-address [interface interface-type interface-number]

Undo am user-bind mac-addr mac-address ip-addr IP-address [interfaceinterface-type interface-number]

Ethernet port:

Am user-bind {mac-addr mac-address [ip-addr IP-address] | ip-addr IP-address}

Undo am user-bind {mac-addr mac-address [ip-addr IP-address] | ip-addr IP-address}

[view]

System view / Ethernet port view

[parameters]

Interface interface-type interface-number: Specifies the port binding. Theinterface-type interface-number port type and port number.

Ip-addr IP-address: Specifies the need to bind the IP address. Where IP-address denotes the binding IP address.

Mac-addr mac-address: Specifies the need to bind the MAC address. Where mac-address denotes the binding MAC address, the format for the H-H-H.

If only bound port and MAC, is arranged on the port.

Interface Ethernet1/0/1 buy HP JG300A 

Am user-bind mac-address 000f-e200-5101

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Cisco laid off 4000 people pack the equivalent of 5% employees

According to the "agency" report, buy ws-c3560x-24t-e the United States multinational suppliersCisco network equipment company (Cisco) announced a few days ago, will lay off 4000 people, the equivalent of 5% employees.

Cisco executive said, weaker than expected economic recovery, the marketdevelopment is particularly disappointing, and therefore must be cut.

Cisco CEO Chambers said, the United States market is improving, but growth in emerging markets offset "slowing down" the recovery force.

Chambers emphasizes, the company must "rapid response", re adjust the human, to meet the growing demand in some markets. He said, part of ws-c3560x-24t-l the streamlining of human will undoubtedly re employed in other positions.

Ways to slove of switch VRRP problem

1, fault phenomenon: the morning of June 5th, OSN card the entire core network failure,affect the company almost all systems.

2, temporary treatment: through the examination of the core switch log, foundthe core switches do not contact the main core switches, the virtual address toexchange main preemptive VRRP, resulting in line fault all VRRP VLAN. Forfast recovery business system, decided to temporarily shut down thepreparation of core switch

3, analysis of the phenomenon: VRRP two switches to the virtual IP address isthe broadcast storm caused by two reasons 1, heart line or port fault 2,standby switch equipment under the loop resulted from

4, find the reason:

Open equipment core switches, once again pulled out after all.

Using the serial line connected switches, run disp Inter, port Input message,found that G1/0/4 broadcast packets in particular

G1/0/4 below the floor 8 floor of the switch are respectively 192.168.1.80192.168.1.81 192.168.1.82 192.168.1.83 192.168.1.84, reset

Co inter under clear port statistics, and then run disp Inter, each port Input message view each switch, found that 192.168.1.83 twenty-second portbroadcast

Package special.

192.168.1.83 22 corresponds Huawei OSN to a switch in the conference room, found twointerface a cable received the switch on the formation of a loop.

Cisco Data Center switches: Nexus and Catalyst series switches

Nexus 7000, 1, 10, and 40 switches and ws-c2960s-48fps-l 100GB Ethernet (GbE) scalability, up to 17TBps, can be well applied to the data center, Cisco said Kiran. The new Nexus Cisco 7700 and 7000 series has a similar feature set, with 10, 40 and100 GbE ports, but provide up to 83Tbps. "We each line card increases the throughput, is almost 2.5 times before, so this is a significant improvement in performance," Kiran said cisco.

Nexus 7700 switch series is also more environmentally friendly. 3KW supportto provide electricity for energy efficiency, allocation more flexible, fan wheelswitch according to the temperature adjustment. "The exchange energy consumption reduced by 33%," Kiran said.

Energy efficient hardware to those in the lack of energy or expensive areaproviders with exceptionally attractive, ESG senior analyst Bob Laliberte said.

In the high density data center, Cisco provides the options, but limited areas,virtualization and cloud environment provides the Nexus 6000 series. Thisswitch offers 10, 40GbE scalability, and lower price, compact structure. "Unlike the large frame type switch, the 6000 is built for a specific purpose, have a fixed function, so the provider cannot like more switches that mixing and matching function," Hanselman said 451.

Although the investment protection and expansibility is very important, but many providers use the Catalyst switch in its environment. Although the market is now Cisco Catalyst main product line for the campus, but the Catalyst 6800(Catalyst switches the latest) can also be used in the data center, Hanselman.

Catalyst series can also have buy ws-c3560x-48p-s the same Cisco Nexux switches to provide similarfunctions, but the provider may have Catalyst switch to invest more, to achieve higher levels of throughput, Hanselman explained.

More information，please view: http://www.3anetwork.com

How to set the user name and password of Huawei switch

(1) the telnet only need to input password can remote access switch.

Enter the user interface view CSHD

[SwitchA]user-interface vty 04

Set authentication password authentication mode

[SwitchA-ui-vty0-4]authentication-mode password

Set the login authentication password plaintext password "huawei"

[SwitchA-ui-vty0-4]set authentication password simple Huawei

Configure user level to the highest level 3 (the default is level 1)

[SwitchA-ui-vty0-4]user privilege level 3

(2) telnet need to enter the username and password can log switch.

Enter the user interface view

[SwitchA]user-interface vty 04

To configure the local or remote user name and password authentication

[SwitchA-ui-vty0-4]authentication-mode scheme

To configure the local TELNET user, user name is "Huawei", "Huawei", the password for access to the highest level 3 (the default is level 1)

[SwitchA]local-user Huawei

[SwitchA-user-huawei]password simple Huawei

[SwitchA-user-huawei]service-type telnet Level 3

(3) through the con port input password to remote landing switch.

Enter the user interface view

[Quidway]user-interface aux 0

Set authentication password authentication mode

[Quidway-ui-aux0] authentication-mode password

Set the login authentication password plaintext password "huawei"

[Quidway-ui-aux0] set authentication password simple Huawei

Configure user level to the highest level 3 (the default is level 1)

[Quidway-ui-aux0] user privilege level 3

(4) through the con port need to enter the username and password can logswitch.

[Quidway]user-interface aux 0

To configure the local or remote user name and password authentication

[Quidway-ui-aux0] authentication-mode scheme

To configure the local TELNET user, user name is "Huawei", "Huawei", the password for access to the highest level 3 (the default is level 1) buy EF8F

[SwitchA]local-user Huawei

[SwitchA-user-huawei]password simple Huawei

[SwitchA-user-huawei]service-type telnet Level 3