cisco ccna pdf free download

cisco ccna pdf free download

Static mapping, when the network size is large, the configuration is surprisingly large. The enhanced features of IS-IS are defined in RFC 2763 , among which there is a mapping definition of dynamic host names. RFC 2763 introduces a new TLV , Type 137 , which is included in the LSP sent by the router participating in the dynamic mapping. After receiving the label from the tail router, the penultimate hop router uses the label as the outbound label of the TE tunnel , and assigns a label to the tunnel and places the label in the label object in the RESV message. Send it to its own upstream router. Network 10.1.45.5 0.0.0.0 area 0 Optional Checksums in IS-IS Finally, let's complete the configuration of R1 : *Aug 18 11:31:44.598: Router isis 10.1.12.1 10.1.12.2 Bytes Label Keeping priority indicates how much weight a tunnel has, so that it can be preserved in the link; 55.55.55.55 [110/2] via 0.0.0.0, 00:00:01, Tunnel0 Create a " pseudo-node LSP " in the broadcast subnet and advertise all the routes in the subnet (the LSP is similar to the LSA ) BGP routing problem, well,cisco ccna pdf free download, now we use the loopback interface on R1 and R4 to establish IBGP adjacency, the problem is solved. At this time R4 , the go 5.5.5.5 next hop of the R1 of Loopback port addresses, R4 at destined to 5.5.5.5 of the IP when the pressure package label, use is 1.1.1.1/32 routing tag, The same is true for R3 and R2 , then the label package can be opened through 1.1.1.1/32 . Link State ID: 1.0.0.0 Opaque Type: 1 Untagged i L1 10.1.34.0 [115/20] via 10.1.123.3, FastEthernet0/0 C 10.1.123.0 is directly connected, FastEthernet0/0 i* L1 0.0.0.0/0 [115/10] via 10.1.123.3, FastEthernet0/0 Network 10.1.45.4 0.0.0.0 area 1 Record Route: 2.2.2.2(200) 4.4.4.4(403) Neighbor 5.5.5.5 update-source Loopback0 IS-IS routing hierarchy *Aug 18 09:06:02.699: ADSPEC type 2 length 48: Bandwidth: 2000 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF Metric Type: TE (default) Causes of LSP generation Fa0/0 R3 to 304 replace 404 . Note that both 304 and 404 are RSVP- assigned tags, so we should still pay attention to the tunnel when viewing the tags . The above table entry, 2.2.2.2 0[5] , be careful not to make a mistake, not the label corresponding to the prefix 2.2.2.2 , but the label corresponding to this tunnel . Various bandwidth information Note ESH and ISH PDU are ES-IS of the PDU instead of IS-IS of the PDU After the neighbor is discovered, the one with the highest transmission address is the active initiator. Note that here, the TCP handshake packet, the source address is the local Transport Address , and the destination address is the transport address of the peer . The transport address is the LDP Router-ID of the router by default . Therefore, it must be ensured that the two Transport Addresses are reachable.