PPP transmission over Ethernet (pppoe)Rfc2526 any subnet transfer address reserved by IPv6Rfc2541 DNS Security Operation considerationsRfc2547 BGP/MPLS VPNsRfc2554 SMTP service authentication extensionRfc2560 X.509 Internet Public Key Infrastructure Online Certificate Status Protocol-OCSPRfc2570 standard Interconnected Network Management Framework IntroductionRfc2577 FTP security considerationsRfc2581 TCP congestion controlRfc2582 Fast TCP recovery a
) refers to the establishment of a secure network connection on a non-secure network. Generally, it provides the following services: verification, encryption, and data integrity. VPN can be divided into leased line VPN and dial-up VPN (also known as VPDN, virtual private Dialing Network) according to the access method. According to the protocol type, the second layer tunnel protocol includes the point-to-point tunnel protocol (PPTP, point to Point tunnel protocol), L2 forwarding protocol (l2f, L
is developed from switches, and GSR internally splits data into standard cell exchanges, in terms of queue and scheduling, GSR is better as a pure core router because it has been tested for many years. In terms of price, 7609 is still relatively expensive, while GSR is cheaper in some cases.
2. Which route table of ISIS level1 includes? When there are multiple levels-1-2 exits, Where do other routes learn from and how do I select routes?
A: Isis level1 and level2 maintain LSD and SPF. level1's
The LDP determines the integrity of the session by detecting the LDPPDU transmitted on the session connection, LSR a live state timer for each session, refreshes the timer every time a LDPPDU is received, and if the timer times out before the new LDPPDU is received, LSR thinks the session is interrupted and the equivalence relationship fails. LSR closes the corresponding transport layer connection and terminates the session process.
Second, the establishment of LSP in the
The 10-ge core switch is still quite common. So I studied the perfect design concept of the 10-ge core switch and shared it with you here. I hope it will be useful to you. Quidway S8500 series 10-Gigabit core switches are a new generation of high-performance 10-Gigabit core route switch independently developed by Huawei 3Com, it can be widely used in the core layer of the E-government network, the core layer of the campus network and the Education Metropolitan Area Network, the core layer of the
Carriers are integrating IP and optical network technologies to improve service efficiency and develop advanced services. But first, they need to overcome extremely complex multi-layer architecture. This architecture is "poorly pieced together to deliver IP services over a network designed to support voice and fixed circuits. Finally, they also need a control platform that extends from the third-layer IP address to the First-layer optical transport layer.The general Multi-Protocol Label Switchin
The core route switch is a new generation switch product. Here we mainly introduce eight main features of the core route switch, quidway S8500 series 10-Gigabit core route switch is a new generation high-performance 10-Gigabit core route switch developed by Huawei 3Com.
It can be widely used in the core layer of the E-government network, the core layer of the campus network and the Education Metropolitan Area Network, the core layer of the campus network and the enterprise network, the core laye
When laying an IPv6 network, we must improve the existing routers. Now, let's introduce the IPv6 core router launched by Huawei. Based on the devices, we can also set up corresponding networking solutions.
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Huawei recently launched the first 10 Gigabit IPv6 core router NetEngine 5000E (NE5000E) in China ). Adhering to the fifth-generation router concept, this device adopts distributed and scalable design based on advanced network processor technology, IPv6 technology, ASIC Technology, and optic
QoS Assurance Measures for VoIP services are currently the topic most discussed in the industry. IETFInternet Engineering Task Force) several technical solutions to support QoS are recommended, mainly including: Integrated Service Int-serv) /Resource Reservation Protocol (RSVP), Differentiated Services (DiffServ), Multi-Protocol Label Switching (MPLS), and business Traffic Engineering (Traffic Engineering. Telecom operators have also adopted some meas
show ip dhcp binding view DHCP address allocation Show ip dhcp pool view address pool information show ip dhcp snooping view DHCP listening configuration show port-security view port security configuration Show ip protocols view detailed routing protocol data show ip rip database view RIP database show ip VPN neighbors view the OSPF neighbor show ip VPN topology view the run show ip ospf neighbor: OSPF neighbor show ip ospf interfaces view the interface running OSPF protocol show ip ospf databa
detection module for mirroring traffic analysis, The scheduling system can still maintain a variety of policy control of the cleaning equipment, deployment examples are as follows:As mentioned above, this hybrid scheme is essentially a bypass deployment for cleaning equipment, but in form and effect is an on-line solution (switchable to bypass effect) and ensures the absolute control and flexibility of the core dispatch for traction and back-injection.Flow traction and back-noteThe flow tractio
traffic detection module for mirroring traffic analysis, The scheduling system can still maintain a variety of policy control of the cleaning equipment, deployment examples are as follows:As mentioned above, this hybrid scheme is essentially a bypass deployment for cleaning equipment, but in form and effect is an on-line solution (switchable to bypass effect) and ensures the absolute control and flexibility of the core dispatch for traction and back-injection.Flow traction and back-noteThe flow
In IPv6 technology, the address structure is worth further learning. The biggest difference between IPv6 and IPv4 is that IPv6 technology defines globally multicast addresses that can be clustered. This new concept may be vague, so we will explain this concept in this article.
What is an IPv6 clustered global unicast address?
The IPv6 protocol technology designs an Address with a hierarchical structure for point-to-point communication. This Address is called Aggregatable Global Unicast Address,
sla id, and 64-bit host interface ID are used to identify the Top-down TLA Level Aggregator in the hierarchical structure, top aggregation), NLANext Level Aggregator, lower aggregation), SLASite Level Aggregator, site-Level aggregation) and host interface. RES reserved for future TLA or NLA extension. TLA is a public network access point that is connected to long-distance service providers and telephone companies. It obtains the address from an inter
computers, printers, and even pagers, to the Internet, the IPv6 address format is different from that of IPv4. an IPv6 IP address consists of eight address segments, each of which contains 16 address bits, it is written in 4 hexadecimal numbers and separated by colons. Besides the address space of 128 bits, IPv6 also designs an address with a hierarchical structure for point-to-point communication, called the Aggregately glob-al unicast address )。
The first three addresses are the prefix of the
space is enough for a large enterprise to connect all devices, such as computers, printers, and even pagers, to the Internet, the IPv6 address format is different from that of IPv4. an IPv6 IP address consists of eight address segments, each of which contains 16 address bits, it is written in 4 hexadecimal numbers and separated by colons. Besides the address space of 128 bits, IPv6 also designs an address with a hierarchical structure for point-to-point communication, called the Aggregately glo
nearly 30%, mainly because 3Com products easy to install, management and maintenance, can be said that 3Com of Gigabit Ethernet technology to popularize the work. The 3Com superstack 3 switch 4.9 million Gigabit Ethernet switch product line has been a great success. It can be seen that the 3Com walk is Low-cost, high-performance route.
Foundry from high to low has Bigiron, Fastiron and Netiron several series of products, including Bigiron backplane bandwidth up to 480Gbps. It is worth mentioni
provides SAAS.4. More key concepts need to be understoodIn addition to the above concepts, If You Want To better maintain your own interests and requirements in the use of cloud computing, as a cloud computing user, two very important concepts are service level agreement (SLA) multi-tenant environment.1. service level agreement (SLA)SLA is a set of agreements to
, and even pagers, to the Internet, the IPv6 address format is different from that of IPv4. an IPv6 IP address consists of eight address segments, each of which contains 16 address bits, it is written in 4 hexadecimal numbers and separated by colons. Besides the address space of 128 bits, IPv6 also designs an address with a hierarchical structure for point-to-point communication, called the Aggregately glob-al unicast address )。
The first three addresses are the prefix of the address type, which
comprehensive service quality (qos) and service level agreement (sla) performance, supporting the most demanding commercial applications. By leveraging the expertise and dedicated resources of outsourcing partners, enterprises no longer need to recruit technical experts. 2. Outsourcing also brings many benefits to service providers (1) Expanding revenue sources: adding value-added services such as virtual hosts, application hosting, and e-commerce su
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