ccna mcq questions and answers

ccna mcq questions and answers

The overload router participates in the calculation as the last hop route. Use set-overload-bit to manually set the overload bit. ISs flood new LSPs to all neighbors R1#show isis da R1.00-00 detail Both R3 and R5 must activate the forwarding adjacency feature. Configure on R2 as follows: 8 Host host Network 10.1.56.6 0.0.0.0 area 0 In RFC5250 In been described herein: A neighbor Capable IS-opaque and only IF The IF IT sets-O 'bit in the Options The ITS Database Field of the Description packets; The-O' bit the NOT SHOULD BE SET When ignored and the MUST BE Is-type level-1 10.1.23.3 ( ZeroAgeLifetime , during which only the header of this LSP is reserved ), it will be deleted when this time is reached. SENDER_TEMPLATE 4.4.4.4/32, version 12, epoch 0, cached adjacency 10.1.12.2 IPv6 Reachability : The value of the type is 236 ( 0xEC ). The reachability of the network is described by defining the routing information prefix and metric. Fa0/0 Detailed LSP header Flooding Protocol: OSPF Header Information:: My Address: 10.1.45.4 We started CEF on R3 . In fact, in CEF ,ccna mcq questions and answers, the default load balancing method is destination-based load balancing. CEF 's Clear text interface authentication *Aug 18 09:06:07.919: parameter id=127, flags=0, parameter length=5 Fa0/0 The label header has a total of 32 bits and contains the following fields: So we get the following information: Retention mode : Label Retention Average output rate based on each tunnel We found, R2 external routing re-released locally gone; R2 from level2 injection level1 of inter-area routes are gone; while R2 can not be used as R1 next hop of the default route. There is only one R2 local direct connection 24.0 route. R2 configuration is as follows Et0/0 *Mar 1 00:00:32.763: ISIS-Upd: full SPF required Router-id 1.1.1.1 Mpls traffic-eng tunnels mpls label range 200 299 There are four metric types: Mpls traffic-eng tunnels mpls ip RFC1195 Partition repair Time since created: 5 hours, 7 minutes Time since path change: 12 seconds Next, R2 receives the tag packet. R2 knows that this is a tag packet from the type field of the Layer 2 Ethernet frame header of this packet, so it looks for its own LFIB table: !! The unit is Bytes , multiplied by 8 is 100Mbps 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. *Aug 18 09:06:02.699: Lighter, only LSPs in this area . Bandwidth: 33000 Router-id 5.5.5.5 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 . Error metric optional, link error probability, not supported As a result, the size of the LSPDB is greatly reduced. Note that the above picture is just an abstraction and simulation concept. The ABCD four routers actually have ISIS adjacencies (in IS-IS broadcast). In the network, adjacencies are formed between routers of the same level on the same network segment, including all non- DIS routers. This is different from OSPF . However , after DIS , everyone The resulting LSP volume is reduced. That is to say, although all routers on the IS-IS broadcast network form an adjacency relationship, the synchronization of the LSDB is still guaranteed by the DIS . The LSP stability and reliability has been guaranteed. The operation of the SPF algorithm is naturally faster.