PPP protocol, this is the structure of IP over SONETPOS. This structure quickly replaces ATM and becomes the mainstream technology of Internet broadband backbone networks. It increases the transmission efficiency from 80% to 95% and simplifies the equipment and reduces costs.
IP over SONET is not the ultimate System of layered simplification. It can further simplify the SONET layer in the broadband backbone network and directly run the IP Application on the Optical channel IP over Optical ). Al
is connected on demand, VPDN usually requires identity authentication (such as using CHAP and RADIUS)
2. define by protocol implementation type
This is the most important way for VPN vendors and ISPs to divide. According to the layered model, VPN can be established on the second layer or on the third layer (some even classify some higher-level security protocols into VPN protocols .)
(1) Layer 2 Tunneling Protocol: this includes point-to-Point Tunneling Protocol (PPTP), Layer 2 Forwarding Proto
I have a Cisco 3640 router with FXS, FX0, and E/M voice cards. Can I use a PBX (dedicated group switch) with this router?
Can you provide an example to illustrate how to call different Cisco 2612 routers in other locations through the PBX vswitch on the MPLS network?
First, there is no difference in MPLS. It is only an IP transmission network. Your 3640 router can be used together with the PBX. FXO can help
unified scheduling of link-level tasks
Linkscan: Port Link Status detection task
LLDP: Implementation of LLDP protocol stack, Management protocol state machine, maintenance protocol related database
Load: Provides the business Board version image file, the load function of the patch pack
LSPA: Responsible for the maintenance of LSP software forwarding, and notify the adaptation layer to maintain chip forwarding
LSPM:LSP management tasks, responsible for creating, updating
sites for different SPS. However, as part of the mutual trust protocol between SPS, VPN-IPV4 routing can only be accepted by EBGP connections between private peers. Vpn-ipv4 routing cannot be distributed on the public Internet or accepted by the public Internet. If the sites of many VPN configuration instances are connected to different autonomous systems, there is no need for a ASBR of all VPN routes between the different autonomous systems, and there can be multiple asbr, each ASBR only part
protocol
Openvpn:openvpn uses the OpenSSL library to encrypt data and control information: it uses OpenSSL encryption and validation capabilities, meaning it can use any OpenSSL-supported algorithm. It provides an optional packet HMAC feature to improve the security of the connection. In addition, OpenSSL's hardware acceleration can also improve its performance.
MPLS VPN Set tunneling technology and routing technology, absorbing the advan
convergence. BigHammer devices not only support a wide range of routing protocols, but also use MPLS technology to solve the biggest challenge facing the network industry-the transition from an IPv4 network to an IPv6 network.
On the one hand, PLS accelerates Data Packet Search and forwarding, and on the other hand, it also provides a more effective tunneling mechanism. Ipv6 integration on MPLS networks is
undoubtedly a good solution in Multi-Service routers. In addition, all users put QoS first in terms of support for PoE, QoS, MPLS and IPv6. Indeed, the core of multiple businesses is to differentiate the types of businesses, and then provide corresponding policies based on different businesses to allocate different service quality. As said Wu Jianxin, Cisco ISR product manager, "QoS is critical and quality of service must be allocated to each applica
At present, the virtual routing domain technology is also widely used. Here we mainly introduce the virtual routing domain technology, this section describes how to use vro domain technology to implement VPN and further explores vro domain technology. At present, most cities have already built IP Broadband man networks, and many cities have also expanded their man networks twice or three times. The most popular construction method is to use routers and switches to form a backbone communication n
excessive online ordering, it is no exception. As the IPTV system is widely deployed and the number of users increases significantly, excessive ordering of network services will become a common phenomenon. The video quality monitoring module-Cisco network analysis module monitors video streams in real time and actively sends alerts to operators when the image quality is degraded, so that operators can learn the root cause of the downgrade and solve the problem in a timely manner, avoid a large
products, DCRS-9800 series routing switches take the lead through the International IPv6 Ready Dhcpv6 certification, Digital China Network is the world's first through this certification manufacturer.
DCRS-9800 series high-end multi-service IPv6 router switch provides 12 to 20 slots of a variety of products, with a single card can support up to 96 * m port or 16*10g port; provides N * T-bit back-board bandwidth, and supports higher bandwidth expansion in the future, supports 100,000 Mbps line r
In terms of the comprehensive performance of Cisco SUP720, how can we understand Cisco SUP720? You will find many methods on the network. The following article compares the performance in three aspects, hope to help the majority of fans. Compared with SUP720, The sup720-3BXL is mainly different from the PFC used by the two. The SUP720-BXL uses PFC3BXL, while the SUP720 uses PFCA, And the SUP720 can be upgraded to a SUP720-3BXL by replacing the PFC.
Cisco SUP720 Scalability:◆ The number of Route
650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/27/56/wKiom1Nx2b6wI8BpAALoUdZoJJQ877.jpg "title=" 5.13. JPG "alt=" wkiom1nx2b6wi8bpaaloudzojjq877.jpg "/>"What skills can I learn from this course?"Through this video you can learn all the configuration of the iOS XR system for the most important device of the Cisco SP CCIE Exam and help you pass SP CCIE certification successfully. This course covers how to build and use the iOS XR operating system to configure iOS for the management and
defines access control list rules.Advanced ACL advanced ACL access control lists can use the source address information of the packet, the destination address information, the protocol type, the source port of TCP, the destination port, the type of ICMP protocol, the message code of the ICMP message, and other elements to define the rules.ACL based on the Ethernet frame header (Ethernet frame header-based ACL ) The access control list based on the Ethernet frame header can filter messages bas
, DCRS-9800 series Routing Switch first through the International IPv6 Ready Dhcpv6 certification, Digital China Network is the world's first through this certification manufacturer.
DCRS-9800 series high-end multi-service IPv6 core Routing Switch provides 12 to 20 slots of a variety of products, with a single card can support up to 96 * m port or 16*10g port; provides N * T-bit back-board bandwidth, and supports higher bandwidth expansion in the future, supports 100,000 Mbps line rate forwardin
and reducing user investment It provides a dual-loop structure that transmits the signal in reverse direction on the ring and provides protection switching less than 50ms. In the business aspect, RPR can combine MPLS protocol and use the Cos byte identification of MPLS label in frame structure to provide four kinds of business: fast delivery service (with strict delay, jitter and protection, clock synchron
(Windows computer) IP Address: 192.168.0.10, subnet mask: 255.255.255.0, Gateway: 192.168.0.1, DNS
: 192.168.0.1. All right, try network connection. In start-run, press command to confirm, and in the DOS window, press ping.
192.168.0.1 cannot be accessed. If Reply from 192.168.0.1: bytes = 32 time
If the Request timed out occurs, you need to check whether the network cable between you and the router is connected. If the connection is established, start IE at the address location.
Enter http: /
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