GRE is a VPN technology that can implement packet transmission over heterogeneous networks. Which of the following statements are true about GRE?
The BFD (Bidirectional Forwarding Detection) state machine implements a three-way handshake for BFD session setup or teardown. Which of the following session states are involved in BFD session setup?
Which of the following statements is false, based on the following IGMP information on an interface of RTA?XC
During routine O&M, the administrator checks the IGMP configuration on a router interface. The configuration is as follows:
Interface information of VPN-Instance: public net
GigabitEthernet0/0/1(192.168.1.1):
IGMP is enabled
Current IGMP version is 2
IGMP state: up
IGMP group policy: none
IGMP limit: -
Value of query interval for IGMP (negotiated): -
Value of query interval for IGMP (configured): 60 s
Value of other querier timeout for IGMP: 0 s
Value of maximum query response time for IGMP: 10 s
Querier for IGMP: 192.168.1.1 (this router)
Given this, which of the following statements are true?
BFD can quickly detect faults in channels at multiple network layers, ensuring high reliability. To which of the following layers does BFD belong?
GRE is a VPN encapsulation technology that is widely used to transmit packets across heterogeneous networks. Which of the following statements is false about GRE?
During routine operation and maintenance, an engineer checks the IGMP configuration on RTA. The configuration is as follows:
Interface information of VPN-Instance: public net
GigabitEthernet0/0/1 (192.168.1.1):
IGMP is enabled
Current IGMP version is 2
IGMP state: up
IGMP group policy: none
IGMP limit: -
Value of query interval for IGMP (negotiated): -
Value of query interval for IGMP (configured): 60 s
Value of other querier timeout for IGMP: 0 s
Value of maximum query response time for IGMP: 10 s
Querier for IGMP: 192.168.1.1 (this router)
Given this, which of the following statements is false?
Which of the following attributes cannot be directly referenced in an apply clause of a route-policy?
In BGP, Keepalive messages are used to maintain BGP peer relationships. When a BGP router receives a Keepalive message from a peer, the BGP router sets the state of the peer to Established and periodically sends Keepalive messages to maintain the connection. By default, the device sends Keepalive messages every seconds.