Introduction to the Firewall Currently, security threats on the Internet fall into the following types: Illegal use: Unauthorized users or users with illegal authority access network resources. For example, an attacker accesses network resources by using the accounts and passwords of authorized users. Denial of Service: A server prohibits authorized users to access network resources. …
Continue reading Firewall OverviewMajor Services Provided by a Solution: FTTx solutions provide multiple access services in different scenarios, mainly including highbandwidth IPTV service, open access network (OAN) access of wholesale service mode, highrate Internet access service, and the private line access service of the enterprise and cell cite. 50M@HDTV Service HDTV is the short form for high definition …
Continue reading FTTx Solution OverviewAs shown in Figure 1, Router A belongs to AS 100; Router B, Router C, and Router D belong to AS 200. BGP Auto FRR needs to be configure so that the route from Router A to Router D can have backup forwarding information. Figure 1 Networking diagram of configuring BGP Auto FRR Configuration Roadmap …
Continue reading Example for Configuring BGP Auto FRRAs a protection measure against faults over links, BGP Auto Fast Reroute (FRR) is applicable to networks with primary and backup links. With BGP Auto FRR, traffic can be switched between two BGP peers or next hops within sub-seconds. With BGP Auto FRR, if a peer has multiple routes with the same prefix that are …
Continue reading BGP Auto FRRGraceful restart (GR) is one of the high availability (HA) technologies, which comprise a series of comprehensive technologies such as fault-tolerant redundancy, link protection, faulty node recovery, and traffic engineering. As a fault-tolerant redundancy technology, GR ensures normal forwarding of data during the restart of routing protocols to prevent interruption of key services. Currently, GR …
Continue reading BGP GR “Graceful Restart “Conventional BGP-4 manages only IPv4 unicast routing information, and inter-AS transmission of packets of other network layer protocols, such as IPv6 and multicast, is limited. To support multiple network layer protocols, the Internet Engineering Task Force (IETF) extends BGP-4 to Multiprotocol Extensions for BGP-4 (MP-BGP). RFC 4760 defines the MP-BGP standard. MP-BGP is forward compatible. …
Continue reading MP-BGPNetworking Requirements As shown in Figure 1, two IPv6 networks are connected to Device B on the IPv4 backbone network through Device A and Device C. To interconnect the two IPv6 networks, configure a manual IPv6 over IPv4 tunnel between Device A and Device C. Figure 1 Configuring a manual IPv6 over IPv4 tunnel Precautions When configuring a manual IPv6 over IPv4 tunnel, note the following …
Continue reading Example for Configuring a Manual IPv6 over IPv4 Tunnel