ccna details

ccna details

0/0/0 Ip router isis Ip address 1.1.1.1 255.255.255.255 The configuration of R5 is as follows: The two new TLVs are: Mpls traffic-eng tunnels mpls label range 200 299 For the device number, this IP is also the LDP routerID . The configuration of R1 is as follows: O The unit is Bytes , multiplied by 8 is 100Mbps PseudoNode ( PSN ) *Aug 18 04:37:06.239: version=0, length in words=7 Router-id 3.3.3.3 5.5.5.5 [110/2] via 0.0.0.0, 00:00:01, Tunnel0 Ll Router , maintains first a layer LSBD , by default, L2 of the LSP is not flooded over, and therefore L1 router 's LSDB Level2 area default route 4.4.4.4/32 *Aug 18 04:37:24.735: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to down Record Route: NONE LABEL InLabel : - Tunnel mpls traffic-eng priority 7 7 tunnel mpls traffic-eng bandwidth 20000 An LDP packet carries multiple label mapping messages. No frame-relay inverse-arp Mpls traffic-eng tunnels mpls label range 400 499 ! Interface tunnel0 O 10.1.12.0 [110/65536] via 10.1.23.2, 00:09:07, FastEthernet0/0 Router-id 4.4.4.4 Name: R2-PE1_t0 Status: Redistribute isis ip level-2 into level-1 route-map test Outgoing Interface fas0/0 Virtual link Network 3.3.3.3 0.0.0.0 area 0 3 area addresses. The latest IOS version can be set to 255. If the maximum number of area addresses supported by the two routers is inconsistent, that is, the MAX.Areas field does not match, the IIH message is ignored . Routing entry for 5.5.5.0/24 Not triggered by ISH , once the interface is activated, the router floods the IIH message on the interface. 1.1.1.1/32 R3#show ip ospf database router 2.2.2.2 Once LDP is activated, the LSR generates a label locally for the prefix in the routing table, and then bundles it with the prefix to send the label mapping message to all LDP neighbors. When I receive the remote binding from the LDP neighbor , I bundle the tags and the local bindings that are localized for the specific prefix into the LIB . ! The configuration of R5 is supplemented as follows: Ip unnumbered loopback 0 tunnel destination 5.5.5.5 tunnel mode mpls traffic-eng *Aug 18 04:37:06.239: Error Node: 10.1.12.2 10.1.12.2 Since RSVP has been able to complete the task of label allocation, there is no need to activate the Label Distribution Protocol ( LDP ) on the interface . Route summarization on the L1/L2 router ( to level1 ) Modify the bandwidth UP/DOWN threshold Network 10.1.34.3 0.0.0.0 area 0 ! *Aug 18 04:37:06.239: average rate=250000 bytes/sec, burst depth=1000 bytes Mpls traffic-eng tunnels mpls label range 300 399 The above figure encapsulates a three-layer label package. For an LSR , only the first label is processed. Each layer of the label has a bottom of the BoS stack to indicate whether it is already the bottom of the stack of the label, and the last label has BoS=1 . Tunnel mpls traffic-eng path-option 10 explicit name R2R4 Network 10.1.12.1 0.0.0.0 area 0 Tunnel mpls traffic-eng bandwidth 2000 Tib entry: 2.2.2.2/32, rev 6 75000 Link Link 1.0.0.0/24 is subnetted, 1 subnets Path Protection Comprising one or more routers is configured on the source IP address, the CISCO IOS in Setting command 10.1.24.2 10.1.24.4 The configuration of R1 is as follows: RFC1195 ! Metric Type: TE (default) Mpls ldp router-id loopback0 mpls label range 200 299 interface fast0/0 So using this feature (an IS-IS process to configure multiple NET addresses), you can achieve: Interface Tunnel0 Note: a IS-IS routing domain ( routing Domain ) does not necessarily need to have two levels, if only a region of deployment, it may be all L1 or all L2 of , recommended L2 of , to obtain a good scalability. SNPA Detailed LSP header After everyone's LFIB is built, we can see that when A receives an IP packet and wants to access X , then A checks its own CEF table. AutoRoute: disabled LockDown: disabled Loadshare: 20000 bw-based auto-bw: disabled Name: R2-PE1_t0 Status: Ip address 10.1.123.3 255.255.255.0 ! So far, the basic configuration has been completed. Now let 's create a TE Tunnel on R2 and R5 : Mpls traffic-eng tunnels ip rsvp bandwidth 10.1.12.2 [MPLS: Label 203 Exp 0] 200 msec 84 msec 136 msec Ip router isis Router isis When R1 recalculates the shortest path, it does not consider passing the R2 out area. Then there is only a default route to R3 on R1 . Of course, the route directly connected to R2 can still be seen on R1 . 3.3.3.3/32 Connection method) Interface To meet the above requirements, IS-IS is designed as a link state routing protocol and uses the SPF shortest path first algorithm to achieve fast convergence and loop-free networks. Both TE3 and R5 must establish a TE tunnel . That is, the TE tunnel must be bidirectional. PDU *Aug 18 09:06:02.699: version=0 length in words=10 Isis password Route-target export 2345:2 Since we have configured link protection on R2 to protect the link between R2-R4 , when the E0/1 port of R2 is shut down , the path error message sent by R2 to R1 indicates that R1 does not need to be removed. Drop the tunnel . So R1 of the tunnel will not be removed. Some guidelines for assigning NET : Reserved bandwidth changes (significant changes) 204 Pop Label 5.5.5.5/32 0 Tu0 point2point MAC/Encaps=14/18,ccna details, MRU=1500, Label Stack{304}, via Et0/1 0E00003017000E00003016108847 00130000 Prefix The paragraph appears in the first paragraph. In IOS , the normal router hello interval defaults to 10S , and the DIS defaults to 3.3S . First configure R3 : Collect IP routing information obtained through other routing protocols Interface Tunnel0 !! The type of IS is level1 Fspec: ave rate=20000 kbits, burst=1000 bytes, peak rate=20000 kbits History: *Aug 18 11:31:44.598: Mpls traffic-eng tunnels mpls label range 300 399 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.