easiest way to pass ccna exam

easiest way to pass ccna exam

Network 10.1.23.2 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 2.2.2.0/24 RSVP extension for LSP tunnel : Mpls traffic-eng tunnels ip rsvp bandwidth Local tag: 104 i ia 5.5.5.0 [115/158] via 10.1.123.2, FastEthernet0/0 10.0.0.0/24 is subnetted, 4 subnets Next-address 10.1.34.4 The router generates a label locally for each IGP prefix and distributes it to the LDP neighbor. It also receives labels for the specific prefix from other LDP neighbors. The router stores the local label and the remote label (which the LDP neighbor sent to me) in the LIB . Router(config)#interface tunnel x Configuration command 2 10.1.23.3 [MPLS: Labels 305/403/505 Exp 0] 8 msec 4 msec 4 msec Metric: 10 ! 0x4F65 Fast tag rewrite with Fa0/0, 10.1.34.3, tags commit: {303} via 10.1.15.5, 0 dependencies, recursive Version : value is 1 The figure above shows the format of IS-IS packets. The yellow background color is the common field of IS-IS packets. Each packet then has its own additional header field, which is then the TLV . Fa0/0 75000 We see the above output, R1 , R2 , R3 all generate LSP ,easiest way to pass ccna exam, and the asterisk entry is issued by R1 itself. In addition, there is a special Network 6.6.6.6 0.0.0.0 area 0 Mpls ldp router-id Loopback0 Bandwidth: 2000 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF Metric Type: TE (default) 3.0.0.0/24 is subnetted, 1 subnets Uptime: 5 minutes, 53 seconds Prior LSP: Shared-Explicit (SE) FLOWSPEC Ip address 10.1.45.5 255.255.255.0 ! *Aug 18 09:06:02.699: 10.1.45.4 (Strict IPv4 Prefix, 8 bytes, /32) Tunnel mpls traffic-eng path-option 10 dynamic Next, let's look at the isis database of R1 : Reference book Three-Way Handshake for IS-IS Point-to-Point Adjacencies Can be used on R5 : 10 Ip address 10.1.12.1 255.255.255.0 Reservable Bandwidth[0]: 201 IS-IS Hello message ( IIH PDU ) PSNP 5.5.5.5 Tun ID: 0 Ext Tun ID: 1.1.1.1 Router-id 3.3.3.3 Route leak Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 We found that R2 can learn to R1 of the Loopback , R3 of the Loopback , and R3 directly connected interface routing of 34.0 , which is due to R4 pass R3 and R2 passed R3 of LSP did not carry the authentication information, then these LSPs to R3 after, R3 is definitely an error, so R3 will not flood the original LSP sent by R4 to R2 , and 3 will not flood the original LSP sent by R2 to R4 . However, R3 sends out its own LSP.There are R3 directly connected network segments 3.3.3.0 and 10.1.23.0 , 10.1.34.0 . These LSPs are flooded to R2 and R4 . Although LSPs carry TLV information for authentication , R2 and R4 do not open domain. Certification, so they directly ignore the certification information and then start reading LSP , which is the interpretation of the results of our experiments. Of course, if R2 and R4 are configured with domain-password but the password is different from other devices, then it goes without saying that directly discarding LSPs with different passwords will not be read at all.