use IKE is IPSec provides auto-negotiation key exchange and create SA during the service, in the IKE defines which of the first stage of consultation kinds of IKE exchange mode ?
Which of the following descriptions about GRE is wrong ? ( Choose one or more )
Which of the following components is made up of the DiffServ model ?
IPSec polic is configured between the two routers , after the policy is issued to the corresponding interface, the ping command is used to check the interoperability of the protected data flow, and it is found that the data passes 100% .Use displa ike sa and displa ipsec sa to order, it shows that IPSec SA is not established.
The reason for the failure of IPSec configuration is ____ .( Choose one or more )
A company PBX via an E1 connection line to the telephone network operators, due to expansion of the company's size, complicated by the need to meet the 50 -way voice calls, you need to apply for ____ root E1 line ? ( Fill in Arabic numerals )
