how many simulation questions in ccna exam

how many simulation questions in ccna exam

*Aug 18 11:31:44.598: The L1 and L2 IIH PDUs on the LAN are sent to different multicast MAC addresses: L1 is 0180-C200-0014 , L2 is Ip address 10.1.34.4 255.255.255.0 IP interface address 75000 A0/0 Router bgp 2345 We can define the priority of the TE tunnel The database is also calculated by the CSPF algorithm, and the result is the path of the tunnel — a sequence of IP addresses. The Level 2 LSP contains all the prefix information that may be reached in IS-IS . Level1 LSP is only used in the local area. Fa0/0 Expense metric R2.02 ! Destination-based load balancing is actually achieved by HASHing the destination and source IP addresses . In other words, it is actually based on source and destination address pairs for load balancing. Next Hop !! Change the TE tunnel 's setup priority and hold priority to 5 MPLS TE provides the following solutions: 13223 Used to publish a complete link state database on a router , CSNP is used to inform other routers of their own database may be outdated or lost LSP . The static route forwarding mode of the MPLS TE tunnel supports route recursion. When the LAN interface activates IS-IS , the router immediately sends IIH , where IIH contains a LANID , which is displayed in the message as The link ID can be the router ID of the neighbor . If it is a multiple access link, it is the interface address of the DR . The interface of each router activates RSVP and MPLS TE tunnel support. 404 301 Flooding Protocol: OSPF Header Information:: Basic 100 For example, the above figure, we can test on R2 , the configuration is as follows: !!! Net 49.0003.0000.0000.0005.00 Downstream assigned label Each IP prefix is ​​assigned a bunch of metrics . Mpls traffic-eng tunnels mpls label range 500 599 Ip cef Tunnel mpls traffic-eng autoroute announce tunnel mpls traffic-eng priority 7 7 In R2 on 3 10.1.23.2 [MPLS: Label 203 Exp 0] 964 msec 1124 msec 1008 msec Mpls traffic-eng tunnels ip rsvp bandwidth 0/0/0 75000 AutoRoute 10.1.12.2 *Aug 18 04:37:24.735: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to down Area-password Ip unnumbered Loopback0 Nodes level and area level Path option 10, type dynamic (Basis for Setup, path weight 3) Based IP traffic engineering is connectionless, not an explicit path ( Explicit routing ) *Aug 18 09:06:07.919: Token bucket fragment (service_id=1, length=6 words *Aug 18 04:37:06.243: tspec parameter id = 127, flags = 0, length = 5 Note that at this moment, 2.2.2.0/24 will not be learned on R4 . This external route is completely suppressed on R2 . In the SWAP process, after the label is exchanged, the inbound label TTL -1 is then copied to the outbound label TTL . 0 kbits/sec Tunnel mode mpls traffic-eng Mpls traffic-eng tunnels mpls label range 200 299 Reservable Bandwidth[7]: View message Based (internet per-Platform ) compared to the label space-based interface ( per-interface ) security label space to lower The IIH is transmitted between ISs . Conceptual introduction Router-id 4.4.4.4 Controlled Load Service break bit=0 service length=0 After flooding related information through the IGP protocol ( OSPF or ISIS ), all TE routers form a unified TEDB in the area. TE overview Untagged For IP applications , 1 byte defines AFI in the NSAP address , at least 2 bytes defines the actual area information, 6 bytes defines the system ID and Distribution mode : Label Allocation Show clns protocol 0 kbits/sec Prior LSP: The PATHTear packet is similar to the PATH except that it is sent when the TE tunnel LSP created by the headend router needs to be removed . For example, the tunnel interface is manually shut down . Pop tag *Aug 18 04:37:06.243: Tun Sender: 1.1.1.1, LSP ID: 20 *Aug 18 09:06:07.919: Path MTU: 1500 Fspec: ave rate=60000 kbits, burst=1000 bytes, peak rate=60000 kbits Path option 10, type dynamic (Basis for Setup, path weight 3) Router-id 6.6.6.6 End LSP ID : End LSP ID . Indicates the last LSP ID of the LSP range described in the TLV field . Global Pool Sub Pool *Aug 18 04:37:06.243: peak rate = 250000 bytes/sec BDR R2#sh mpls tr link-management advertisements R1 is based on the remaining two paths, then compare TE metric (default is equal to IGP Metric ) Path MTU: 4294967295 *Aug 18 11:26:02.546: Mpls traffic-eng router-id loopback 0 mpls traffic-eng level-1 To perform the same network segment check (the adjacency must be on the same network segment) Fspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits History: The forwarding adjacency feature will cause the TE router to advertise the TE tunnel as a virtual path (direct link) in the IGP routing protocol area, so that all routers know the existence of the tunnel. The IGP protocol here can be OSPF or IS-IS. ! 0xE1E2 The LFIB table does not contain inbound interface information. Form a LAN adjacency: Experimental phenomena 10.1.56.5 [MPLS: Label 505 Exp 0] 8 msec 0 msec 0 msec Router(config-if)#mpls traffic-eng flooding thresholds up/down ? [3]: 75000 kbits/sec Ip cef Point1 : Token bucket fragment (service_id=1, length=6 words parameter id=127, flags=0, parameter length=5 Path option 10, type dynamic (Basis for Setup, path weight 30) Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Network 10.1.34.3 0.0.0.0 area 0 Next Hop STYLE Path option 10, type dynamic (Basis for Setup, path weight 30) MPLS does not assign labels to BGP routes, but assigns labels to the next hop of BGP routes. *Aug 18 04:37:06.239: Controlled Load Service break bit=0 service length=0 Experimental needs Calculated. In the figure above, the red path is calculated by CSPF . !! TE tunnel 0x00000036 ! !! Change to 33M ISO10589 Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 ! The previously mentioned IS-IS , which only supports the CLNS network environment, does not support routing information exchange in the IP network environment. Later, the IETF in RFC 1195 are of IS-IS with modifications and extensions,how many simulation questions in ccna exam, called integrated IS-IS ( the Integrated IS-IS ) or dual- IS-IS ( Dual IS-IS ). Integrated IS-IS was developed to enable it to be applied to both TCP/IP networks and OSI networks, enabling it to provide dynamic routing information exchange for IP networks.