current cisco ccna exam

current cisco ccna exam

For all practical applications, IS-IS only supports broadcast and point-to-point links. The NBMA link is not supported . In the NBMA environment, it can be equipped 0x0000000C Log-adjacency-changes This global command is used to modify it. After the expiration of the timer, the IGP will establish an adjacency on the link. Once the IGP adjacency is established and the LDP session has not been synchronized, the IGP will advertise the metric of the link to the maximum. This will cause the route of R2 to change. The outgoing interface of the route to 5.5.5.5 and 55.55.55.55 becomes e0/1 . So R2 goes to Type 2 length 36: ADSPEC Pop Label Set-attached-bit route-map test *Aug 18 11:26:02.546: 10.1.34.4 4.4.4.4 104 !! Primary tunnel Known via "isis", distance 115, metric 168, type inter area State: explicit path option 10 is active Mpls traffic-eng tunnels mpls label range 400 499 R2-PE1#show ip route *Aug 18 04:37:06.239: SESSION type 7 length 16: Metric Type: TE (default) Downstream assigned label Ip rsvp bandwidth Network 10.1.23.2 0.0.0.0 area 0 Address-family ipv4 vrf VPN-A no synchronization 200 It is strongly recommended to enable this command to view some logs of the isis adjacency . The default is closed. 10.1.23.3 [MPLS: Labels 304/505 Exp 0] 4 msec 4 msec 4 msec The implicit empty tag above has already been introduced, it does increase efficiency, but there is also a problem, because if I receive an implicit null tag sent by a downstream neighbor about a particular prefix bundle, then I am forwarding the tag. Before the data is given to the neighbor, I will first pop the top-level label. Then the pop-up action actually pops up the entire top-level label header, that is, even the fields with the label field, EXP, etc. pop up, and EXP knows For QoS ,current cisco ccna exam, it is also popped up, meaning that some information for QoS is lost here .