aaa mpls

AAA server in the network management is mainly used for server, network equipment certification, such as our common Cisco ACS system, through the AAA server can be the login device account unified to the AAA system for management!Another AAA system can also authorize accounting, the TACACS protocol can limit the user t

What is the role of NOTNULL in the statement 'AAA' varchar (11) NOTNULL when creating a field? What is the function of the statement 'AAA' nbsp; varchar (11) nbsp; NOT nbsp; NULL in "NOT nbsp; NULL" when creating a field? NOT nbsp; NULL? ------ Solution ------------------ what is the role of not null in the statement 'AAA' varchar (11) not null when creating

Recently, a customer's AAA was not correctly configured, causing him to be locked out of the device. Because it is a multi-switch stack unit in the production environment, it is not allowed to restart and ignore the configuration, remote operations are required to solve the problem, which undoubtedly increases the difficulty of solving the problem. After several attempts, we found that some settings on Cisco ACS can bypass the authorization to access

Data Packets transmitted in the MPLS network can have multiple labels. Generally, there is only one label for data transmission in the MPLS network, and there are two labels in the mpls vpn. This is the label stack, they are called the top label and the bottom stack label respectively. The inner layer label should be the bottom stack label, and the outer layer la

MPLS: Multiprotocol label Switching. What exactly is MPLS ?1, MPLS Overview: The use of label forwarding instead of traditional routing and forwarding, greatly improve the forwarding rate, and MPLS in traffic engineering and QoS areas are of great use.2. Tags: MPLS uses tags

In the previous article, we introduced MPLS technology. Many protocols have been applied in this Multi-Protocol Label technology. Today we will introduce the BGP protocol. Let's see how BGP works in MPLS. The specific application of the BGP protocol in MPLS technology. Let's take a look at the following article. all problems can be solved. When LSR assigns tags B

MPLS + BGP advanced featuresWill LDP allocate tags for BGP routes? Why? --- Previously we mentioned that LDP assigns tags to IGP and never assigns tags to BGP. the following uses an experiment to illustrate how LDP + BGP works. forwarding method of a pure IP Network: In this topology, R1 and R4 establish an EBGP neighbor. r3 and R5 establish EBGP neighbors. build an IBGP neighbor between R1 and R3. IGP protocol between R1-R2-R3 is OSPF. network 44.1.1

Python exercise 013: Solving a + aa + aaa ......, Python [Python exercise 013]Evaluate the value of s = a + aa + aaa + aaaa + aa... a, where a is a number. For example, 2 + 22 + 222 + 2222 + 22222 (a total of 5 numbers are added at this time. This question is not difficult. In fact, a + aa + aaa + aa... a can be converted to (a * 10 ** 0) + (a * 10 ** 1) + (a *

Description: Given a and n, calculate the sum of a + aa + aaa + a... a (n. Input: There are multiple groups of test data. Input a, n (1 Output: Output results for each group of inputs. Sample input: 1 10 Sample output: 1234567900 From the question, we can see that when a = 9, n = 100, the number of an int type is no less than 100 bits, so we cannot use the common method to find it, the

/* For the sum of the first 5 items of sn = a + AA + AAA + AAAA + AAAAA, where A is a number, for example: 2 + 22 + 222 + 2222 + 22222*/#include int main (){int i = 0;int a = 0;int sum = 0;int num=0;scanf ("%d", num);for (i = 0; i {A = a * ten + num;sum = sum + A;}printf ("%d", sum);return 0;}Output Result:224690This article is from the "Rock Owl" blog, please be sure to keep this source http://10742111.blog.51cto.com/10732111/1711998c language; The s

What is the function of not NULL in the new field when the statement ' AAA ' varchar (one) is not null? What is the function of not NULL in the new field when the statement ' AAA ' varchar (one) is not null? is not null possible? ------to solve the idea---------------------- Indicates that the field cannot be empty (null), that is, when the record is inserted, the field must have a value is not null possibl

At present, the MPLS fast rerunning technology is widely used. We believe that with the development of the communication industry, the MPLS fast rerunning technology will be more comprehensive and stable, bringing users a good network environment. To meet real-time applications such as video conferencing and television services, LSP protection capabilities similar to traditional SDHAPS must be provided for

1. With the advances in hardware technology and the creation of high-speed routers and three-layer switches, MPLS has had little meaning to increase the speed of forwarding. However, MPLS has been widely used in virtual private network, traffic engineering, QoS and so on because of its support of tag stack and connection-oriented characteristics. MPLS Label switc

The previous document has already learned the information dissemination through OSPF, also introduced the CSPF and path's establishment RSVP work principle. What should we do next? You can forward customer data traffic along the tunnel interface in three ways: Static routing routes Policy Routing Policy Routing Automatic routing Autoroute So to be more blunt, this piece of content is the final phase of Te Tunnel, the key to the key. Just imagine, through arduous, established a te tunnel, b

In March 1999, the Internet Task Force (IETF) published a RFC2547 by Cisco, describing a way for operators to provide virtual private network (VPN) services to users through an IP backbone network. This method uses an extended BGP (Boundary routing protocol) to distribute VPN routing information through the carrier backbone network, and uses Multiprotocol token switching (MPLS) to forward VPN traffic between the VPN user sites. The main purpose of thi

Service providers are facing challenges in supporting IP Services, which requires that they can make existing networks have traffic engineering management. Service providers require that traffic engineering in the IP over ATM mode be reflected in a pure IP network. MPLS is a management technology that provides traffic engineering when both the ATM and the pure IP network coexist and avoids two separate networks.Service providers all over the world are

Synchronous Optical Fiber Network (SONET) is an optical fiber transmission standard that focuses on the physical layer in the OSI model structure. Like SDH in the world, SONET was initially designed for the transmission of voice traffic over optical fiber networks. Like the first layer physical layer protocol, SONET is also used to ensure communication between various optical fiber network links. Over time, SONET evolved, including data services-such as frame relay, T1, and OC-3-in terms of fibe

Lab environment: DynamipsGUI 2.8 Tutorial topology: 650) this. width = 650; "style =" width: 587px; height: 275px "height =" 221 "alt =" "width =" 721 "border =" 0 "src =" http://www.bkjia.com/uploads/allimg/131227/0305341015-0.jpg "/> Purpose: Configure Mpls vpn, To achieve 192.168.1.0/24 And 192.168.2.0/24 Intranet mutualConnect Tutorial steps: R1:CE1 (config) # int f0/0CE1 (config-if) # ip add 192.168.1.1 255.255.255.0CE1 (config-if) # no shCE1 (c

In this document, there are several things that are involved: Fast Reroute Frr--fast Re-route Link protection Node protection Path protection Some other advanced protection mechanisms. Before we begin, we need to understand why protection and recovery are needed. Some of the networks sometimes fail, and these failures involve a wide range of lines, fiber loose/broken to router crashes. In IGP, if network turbulence is encountered, OSPF or other routing protocols recalculate the topology,

How to enable the MPLS module#Modprobe Mpls_routerModprobe MPLS_GSOModprobe Mpls_iptunnelSysctl-w net.mpls.conf.lo.input=1Sysctl-w net.mpls.platform_labels=1048575How to create the virtual interface and bridge interface#IP link Add veth0 type Veth peer name Veth1IP link Add brm type bridgeIP link set eth1 master BRMIP link set veth0 master BRMIP addr Add 192.168.23.99/24 dev BRMIP addr Add 192.168.23.100/24 dev Veth0IP link Set BRM upIP link Set veth0