As shown in the figure,

in the context of IPv4 and IPv6, the SEL field in the NET address of the ISIS is always valued as 00?

As shown in the figure, Department A of Branch 1 has access to the Internet, but Department B can only use an encrypted VP to access headquarters resources, and NAT can be configured on the egress device The policy enables Department A to access the Internet, while the PSecVPN (ESP Protocol) + Tunnel mode method configured for Department B gives it access to headquarters.

As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00 ?

Which of the following messages does the BGP protocol support?

In a multicast network, what causes multicast traffic to not forward properly?