how to study for ccna

how to study for ccna

DBD Link[0 ]:Nbr IGP Id: 10.1.12.2, nbr_node_id:8,how to study for ccna, gen:51 frag_id 0, Intf Address:10.1.12.1 i* L1 The configuration of R1 is as follows: Manual re-optimization PATH No mpls ip propagate-ttl [ forwarded | local ] Admin: up Oper: up Path: valid Signalling: connected path option 10, type explicit R2R4R5 (Basis for Setup, path weight 30) Interface eth 0/2 Ip address 10.1.34.3 255.255.255.0 0xCC Maximum reservable bandwidth information: *Aug 18 09:06:07.919: Ip address 1.1.1.1 255.255.255.255 Reference book Show mpls traffic-eng link-management advertisement !! TE metric , the default is equal to the following IGP metric ! 10.1.23.3 [MPLS: Label 300 Exp 0] 0 msec 0 msec 0 msec In a CISCO IOS router without IPv6 capability, the general rules for load balancing packetized packets are as follows: 0x7056 You can see Path weight=3 . How did this 3 come from? Because R1 establishes a tunnel to R4 , then R1 reaches R4 (note that it is not Interface The refresh interval is 900s , and the timer value is adjustable. Mpls ip interface fa1/0 ...... ...... Basic experiment 1 Ip cef Current LSP: 0/0/0 Configure on the physical interface: Link[0 ]:Nbr IGP Id: 10.1.12.2, nbr_node_id:8, gen:51 frag_id 0, Intf Address:10.1.12.1 R1# VPN tags are distributed by BGP . In any case, LFIB is always used to forward inbound tagged messages. ...... Another example of causing IGP and LDP to be out of sync is that when the LSR is restarted, the IGP can quickly establish an adjacency, and the LDP session may be set up slowly, that is, the necessary information is loaded in the LFIB . IGP forwarding has already begun before the correct label exchange . The message may then be forwarded incorrectly or dropped somewhere after entering the MPLS network.