Domestic many IDC service providers claim is "real BGP", "double single IP", "national railway by double", however, the water? They are all BGP double? The threshold of the BGP really so low? Today for everyone explanation about how to distinguish authenticity BGP,
BGP is what?
Border gateway protocol (BGP) is a kind of autonomous systems running on TCP (AS) routing protocol, was the only one able to properly handle multiple connection between unrelated routing domain agreement,
Popular point about
, China telecom, China unicom, China mobile, and some have the AS autonomous domain of large private IDC operators can be accomplished by BGP protocol line more interconnected,
Emmm...
A simple analogy
On a business trip to Shanghai (site), can choose highway (telecom), plane (China unicom), high-speed rail (mobile) in a variety of ways, such as BGP is just like a smart APP can help users choose the best form of transportation, and can be in the event of a temporary problem, automatically to help users choose the best mode of transportation,
The concrete implementation scheme
Domestic IDC room need to CNNIC (China Internet network information center) or APNIC (asia-pacific network information center) to apply for their own IP address and the AS number, and then their own IP address AS broadcast to other network operators, and through the BGP protocol will multiple AS connections, which can automatically across web access, at this time, when the user access requests will be automatically according to the mechanism of BGP protocol between multiple AS connection has been established to provide users with the best route, so AS to realize the high speed of different network operators users access resources in the same room,
Advantages of BGP: automatic optimal network path choice, line redundancy, stable and reliable network, realize the network access, since the BGP has so many advantages, based on the principle of good product not cheap, what is the price of BGP on market?
80-400 yuan/M (Beijing area), what? Why is there such a big price gap. This is about to mention everyone concerned about the authenticity of the problem of BGP,
1. What is the difference between true bogus BGP is the price?
We mentioned above, the construction of BGP network enterprise first need to own the AS number and IP address, and then their IP addresses broadcast to all the operators AS the network and will own the AS and more corresponding AS BGP connection, and then through the BGP protocol to guide the user through the best path to access server,
True cost of BGP=AS + + equipment cost + dynamic IP addresses (BGP) bandwidth
Pseudo BGP cost=the AS + + static IP address segment + equipment costs bandwidth
Prices in this movement has a huge difference between a static
2. What is the difference between authenticity BGP on the use effect?
True BGP the users the best path can be automatically choose
Even in a single line fault, BGP still can guide the user to select the best access path automatically
Pseudo BGP has realized the multi-line access, but do not have true BGP dynamic optimal path switching function, therefore, once the circuit malfunction can cause users can't access, can only be accessed through manual switch circuit,
Of course, in addition to the above three kinds of circumstances, the market still have a kind of half-truths BGP room
The hybrid BGP
Such AS A computer room, known AS the five line BGP, unicom, mobile, A business of BGP dynamic bandwidth, while China telecom enterprise to static bandwidth, A and B once unicom circuit failure, or other dynamic bandwidth users only can be automatically assigned to the mobile and enterprise dynamic bandwidth on A line, A still achieved the effect of BGP, but China telecom or static bandwidth B enterprise fails, the user will not be automatically assigned to other static or dynamic network, and in the static bandwidth AS black hole formed in the routing, that of the user will be unable to access the AS, requires human intervention to manually repair and repair for A long time,
Do you think "back to the countryside" is over? Be careful! Rural road is more slippery!!!!!!
Lend chicken unripe egg "type BGP
Besides hybrid BGP, currently on the market have a cheaper way of BGP implementation, AS shown above, the enterprise procurement China telecom single room and its own IP address broadcast at the same time, IDC with another third party service provider of pseudo BGP room for special line connected, at the same time will be its own IP address in the third party IDC service providers AS broadcast domain, so that it can be disguised in a single room based on BGP effect is achieved, but same AS a case, once appear, fault, static bandwidth routing black holes, must be conducted the artificial intervention, and repair for a long time,
BGP is, in short, may realize the telecom, netcom, connectivity, so whether a room is really BGP room, first to see whether the rooms have belongs to own the AS number, want to know if this is a room is BGP room the only real proof,
CodePudding user response:
Dynamic and static difference, use the impact is not big,CodePudding user response:
BGP can also do routing within the AS?CodePudding user response:
is too professional, in fact, with the various aspects are good,CodePudding user response:
Say of very good!CodePudding user response:
