ccna past questions

ccna past questions

*Aug 18 09:06:07.919: Tun Sender: 1.1.1.1 LSP ID: 248 Certification Information *Aug 18 11:31:44.598: 5.5.5.5 Tun ID: 0 Ext Tun ID: 1.1.1.1 Switched Mpls ldp neighbor 1.1.1.1 targeted ldp Configuration example 2 : 0/0/1 Interface loopback0 Clear domain authentication Link State ID: 1.0.0.0 Opaque Type: 1 The configuration of R1 is as follows: Now let 's take the traffic going to 4.4.4.4 on the R1 to the tunnel , using one of the simplest methods: static routing. CSPF algorithm overview Peer LDP Ident: 3.3.3.3:0; Local LDP Ident 1.1.1.1:0 *Aug 18 11:31:44.598: Path Latency (microseconds):0 As with regular IP routes , OSPF floods LSAs when the interface is up or manually modified for IGP interface parameters. 0 kbits/sec Type 2 length 48: Auto Route : The PATH message is delivered from the headend router to the following router, then the next hop router will remove its own IP from the ERO . Designated Intermediate System designated intermediate system [110/3] via 10.1.23.2,ccna past questions, 00:53:36, FastEthernet0/0 Priority 7 : 9375000 State: dynamic path option 10 is active Modify the configuration of R2 : FastEthernet0/0.12 (ldp): xmit/recv ERROR_SPEC Is-type level-2-only Tspec parameter id = 127, flags = 0, length = 5 TCP connection: 3.3.3.3.41954 - 1.1.1.1.646 How long in msecs to wait upon flooding a down forwarding adjacentcy The tunnel configuration of R2 is modified as follows: Net 49.0001.0000.0000.0003.00 R1#show mpls ldp neighbor Priority 2 : 9375000 Label space:Per-Platform Or Tunnel Id Interface FastEthernet0/0 Mpls ip Router-id 4.4.4.4 0x2995 i ia 10.1.24.0 [115/148] via 10.1.123.2, FastEthernet0/0 i ia 10.1.45.0 [115/158] via 10.1.123.2, FastEthernet0/0 i ia 10.1.34.0 [115/158] via 10.1.123.2 , 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 IS-IS routers belong to only one specific area Pop tag 2 10.1.23.3 [MPLS: Labels 304/505 Exp 0] 4 msec 4 msec 4 msec Mpls traffic-eng tunnels mpls label range 200 299 Basic experiment Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 16 The R2 re-released 2.2.2.0 external route is still there; the inter-area route is gone, except for a R2 local direct connection of 24.0 ; in addition, R1 still does not use R2 as the next hop of the default route. 2.2.2.2 [110/65536] via 10.1.12.2, 00:00:47, FastEthernet0/0 Not triggered by ISH , once the interface is activated, the router floods the IIH message on the interface. Router isis Ip address 10.1.56.6 255.255.255.0 0/0/0 Res. Sub BW: 0 kbits/sec Downstream:: Set-overload-bit on-startup <5-86400 sencondes> Ip address 10.1.34.3 255.255.255.0 *Aug 18 09:06:02.699: SENDER_TSPEC type 2 length 36: This command will cause the tail router to advertise implicit empty labels. (default action notification explicit empty label) 16 Interface eth0/1 The configuration of R1 is as follows ( R2 does not open area password temporarily ): Bw[7]: Route metric is 168, traffic share count is 1 300 Global Pool BW Unreserved: Network 6.6.6.6 0.0.0.0 area 0 Define source Label location !! Specify the range of local tags, this can be a great convenience in the experiment MPLS TE traffic forwarding My Address: 10.1.12.1 Generate a default route to this device as the egress route by ATT bit with its nearest L1/L2 router R1#show mpls forwarding-table Ip address 10.1.23.3 255.255.255.0 Experimental results: C Control plane : exchanges Layer 3 routing information (such as OSPF , ISIS , BGP, etc.) and labels (such as TDP , LDP , BGP, and RSVP ). 10.1.12.2 R2 is preferably a route from the tunnel port. At this time , the traffic from R2 to 55.55.55.55 is on the tunnel , and the LSP is used for label switching. Clear text interface authentication To sum up, I said three commands: Set-overload-bit suppress external Ip address 10.1.23.2 255.255.255.0 Tspec: ave rate=20000 kbits, burst=1000 bytes, peak rate=20000 kbits RSVP Resv Info: The downstream label was not transmitted, because LDP Neighbor was not established. Router(config-router)#mpls traffic-eng router-id {interface} Interface Tunnel0 R4 configuration is as follows Mpls traffic-eng tunnels ip rsvp bandwidth IS-IS uses a simple two-layer structure. The IDP and HODSP are combined to be used as the area ID of the Layer 2 route , and the remaining system IDs are used as the first layer of routing. R3.02-00 Fa0/0 Router isis Ip address 10.1.12.2 255.255.255.0 Debug isis update on R2 BandwidthOverride: disabled LockDown: disabled Verbatim: disabled Ip cef Interface Loopback0 The configuration of R1 is as follows: Test . 6 : SET-overload-External 'bit the suppress interlevel Administrator-weight , and only the IGP metric is used to calculate the shortest path of the tunnel . Link state information IGP itself supports Router-id 1.1.1.1 Router-id 1.1.1.1 Network 10.1.34.4 0.0.0.0 area 0 Mpls traffic-eng tunnels mpls label range 300 399 Pop Label Global Pool When the router receives the IIH , it will perform a series of verification actions, such as whether the length of the SystemID matches, max area address The affinity attribute is a property that describes the MPLS TE tunnel and is also composed of 32 bits , which is exactly the same as the number of attribute-flags mentioned above . Also configured with the affinity attribute is a mask, also 32bits , which is used to match the attribute tag and the affinity attribute.