cisco ccna 1

cisco ccna 1

For point-to-point interfaces, SNPA is the unique identifier for the circuit. For example, on the HDLC point-to-point link, the circuit ID is 0x00. The ACL filters out LDP packets. This prevents LDP adjacency between R1 and R4 from being established. Let's observe the phenomenon. Bytes tag switched CLNP is similar to the IP protocol except that it serves the ISO transport layer. IS-IS , ES-IS , and CLNP are network layer protocols that are encapsulated directly in the data link layer frame. Compared with the OSPF packet in TCP/IP , it is hidden behind the IP header. The encapsulation efficiency of the former protocol packet is higher. Net 49.0001.0000.0000.0001.00 4 10.1.45.5 8 msec 8 msec * Switched R3#show ip cef exact-route 10.1.35.55 1.1.1.1 OutLabel : FastEthernet0/0, 201 Net 49.0001.0000.0000.0002.00 Mpls ldp neighbor 1.1.1.1 targeted ldp The configuration of R2 is as follows (all configurations are omitted from the configuration of interface IP ): Next-address 10.1.24.4 The overload-bit will not be cleared until the BGP convergence is completed . This feature is not particularly recommended. Feeling not very reliable. By default, the cost of an IS-IS interface is 10. 10.1.34.0/24 Network 10.1.12.1 0.0.0.0 area 0 ! Flooding Status: ready *Aug 18 09:06:07.919: version:1 flags:0000 cksum:BFD0 ttl:255 reserved:0 length:132 Although the implicit null tag also uses a tag with a tag value of 3 , tag 3 will never appear in the tag stack of the MPLS message, which is why it is called an implicit null tag. This will result in the OL bit of the LSP generated by R2 , and the result seen on R1 is this: 75000 ISO addressing Outgoing interface *Aug 18 09:06:02.699: 10.1.45.4 (Strict IPv4 Prefix, 8 bytes, /32) 10.1.12.2 The configuration of R1 is as follows: Is a sequence of LSRs that switch a labeled packet through an MPLS network or part of an MPLS network. In the forwarding process, a set of data with the same processing mode can be identified by means of address, tunnel, COS, etc., usually in one set. (Link ID) Designated Router address: 10.1.23.2 (Link Data) Router Interface address: 10.1.23.2 Number of TOS metrics: 0 i ia 5.5.5.0 [115/158] via 10.1.123.2, FastEthernet0/0 10.0.0.0/24 is subnetted, 4 subnets R1 is based on the remaining two paths, then compare TE metric (default is equal to IGP Metric ) R1.00-00 Router ospf 1 Bw[6]: Number of Links: 3 Now a result, since the R1 has the MPLS LDP-IGP synchronization, R1 will 10.1.12.0/24 this link metric transferred to 65535 (in fact, this time the R1-R2 between OSPF adjacency should DOWN off,cisco ccna 1, will save the configuration If R1 is restarted, the OSPF adjacency relationship between R1 and R2 will not be established. Therefore, R1 is preferred as R4 as the next hop to the 3.3.3.3 network, and LDP adjacency is maintained between R1 and R4 .