Question 1: 223-3
When the route changes to XXX isis routing algorithm recomputed
The answer is that PRC instead of I-SPF
See Bowen: https: //blog.csdn.net/qq_38265137/article/details/80438053
1. The route calculation section PRC (Partial Route Calculation): means that when the road network, only the route changes when recalculated by the changes.
2. Incremental Shortest Path First algorithm I-SPF (Incremental SPF): refers to the time when the network topology changes, only the affected nodes route calculation, but not all the nodes to recalculate routes, thereby speeding up the routing calculation.
3.PRC principle and to I-SPF, is only the route changes were recalculated. The difference is, PRC does not need to calculate the shortest path, but is calculated by I-SPF of updating a routing SPT.
DS *** Description:
Dynamic Smart *** (Dynamic Smart Virtual Private Network), referred to as DS ***, *** is the solution to establish a tunnel between A Hub-Spoke networking at a public address dynamic branch
Decision program.
So 223-4 is right!
TCO which mainly contains three parts construction investment, operation and maintenance, optimization transformation
TCO (Total Cost of Ownership), that is, the total cost of ownership, including product procurement to post-use and maintenance costs. This is a corporate technical evaluation criteria frequently used.
Defined questions CAPEX 222 92 Capital expenditures (Capital Expenditure)
223 additional OPEX title refers to the management of business spending, namely operating costs. (Operating Expense)
https://zhidao.baidu.com/question/501184003.html https://ks.wjx.top/jq/45313693.aspx
223-14
Ospf campus network using point to point is often modified because the network type: a simplified link state database
About usb AR G3 MPU port can be configured for the router from
option 82 to achieve address information of the client dhcp dhcp relay apparatus and recorded on dhcp server, in conjunction with other software can allocate limited dhcp and accounting functions.
option 82 blog.csdn.net/killmice/article/details/53007476
But GRE itself does not provide encryption for enhanced security, it can be combined with the use of IPSec.
