bgp neighborship

distribution system. Ip rip is defined in RFC 1058 and RFC 1723. RIP2-is the latest enhanced version of RIP. It allows RIP packets to contain more information and provides a simple authentication mechanism. It is described in RFC 1723. Open Shortest Path First version 2nd (OSPFv2)-it is the second version of OSPF. OSPF is a connection status routing protocol, which is an IETF of an interconnected network engineering task group. The internal gateway protocol workgroup is designed for IP addresse

named after the founder of this algorithm. The Border Gateway Protocol BGP--BGP is used to replace the EGPExterior Gateway Protocol) Inter-Domain Routing Protocol. The accessibility of BGP and other BGP system Ethernet switches is defined by RFC 1163. BGP4 is the fourth version of

routes that pass the prefix in the next hop.SRC prefix only lists routes whose source address belongs to the prefix.Realm realmid or raalm fromrealm/torealm only lists routes whose realm is realmid. Example Calculate the number of routes using the gated/BGP protocolKuznet @ AMBER :~ $ IP Route ls proto gated/BGP | WC1413 9891 79010Kuznet @ AMBER :~ $ Calculate the number of entries in the route cache. Beca

region is composed of one or more subnets connected to each other and is connected to the main region. In addition, the OSPF protocol supports a variable length subnet latency (vlsm) that provides network address space conversion and bandwidth-based computing. External Routing Protocol The external routing protocol provides routes between autonomous systems. The most common types of TCP/IP networks are as follows: EGP The first generation of the widely used external routing protocol is EGP (ext

actually provides a function similar to a device name. But there are usually many interfaces and addresses on each vro. Why don't you choose one of them? The reason is as follows: Because the Telnet command uses TCP packets, the following situation may occur: A router interface is down due to a fault, but other interfaces can still be telnet, that is, the TCP connection to this vro still exists. Therefore, the selected telnet address must never be down, and the virtual interface meets this requ

the Telnet command uses a TCP message, one of the router's interfaces is down because of a failure, but other interfaces can still telnet, meaning that the TCP connection to the router still exists. Therefore, the selected Telnet address must never be down, and the virtual interface satisfies such requirements. Because such interfaces do not require interoperability with the end-to-end, the address of the loopback interface is usually specified as a 32-bit mask in order to conserve address reso

be controlled at this time. Using a cloud server, you can add servers at any time--at your fingertips.2. Reduce the server can only be pulled back from the computer room to the office, can not return the server to the manufacturer, the cost of the purchase of the server is wasted. And the use of cloud server, if not next month, do not renew the line (for Aliyun monthly purchase of the situation)-to use it, want to throw it.3. The server configuration that meets the basic requirements cannot be

table. However, prefix filters cannot be well upgraded in terms of operations, especially when there are hundreds or thousands of users. Filter VPN-IPv4 addresses are not as flexible as we like. For example, user A and user B may need to establish A VPN-based intranet between them to transmit A subset of A limited public address space to each other. Fortunately, BGP already has a policy tool dedicated to using flexible policies for a large number of