ccna routing & switching practice exam

ccna routing & switching practice exam

Mpls traffic-eng tunnels mpls label range 100 199 MPLS TE tunnels, also known as Traffic trucks , are used to overcome hop-by-hop IP routing defects. LDP allows non-directly connected neighbors, so that neighbors discover that they do not need to rely on multicast HELLO packets, but instead use unicast packets. Configuration command Bw[3]: The above is the LDP neighbor shown on R1 . There is an LDP neighbor. Its LDP router ID is 2.2.2.2 and label spaceID=0 . This indicates that the platform is based on the label space. Since the IP packet is generated on the initial router, the CEF table is searched . With the " show ip cef detail " command, you can see from the output whether the route is pushed into the label. The distribution label is based on The prefix in the CEF table is assigned. Route summarization must be performed on the originating router of the L2 route, otherwise invalid Active Path Option Parameters: Clear text interface authentication 0x8000001A 0x002ED2 0 State Changed: 02:23:31 In this way, first R2 will prefer from the tunnel port to R5 , metric=1+1=2 . There are two options for R1 to R5 : Bgp router-id 2.2.2.2 In CISCO IOS , a re-optimization of a TE tunnel is done every 1 hour by default . MAX.Areas maximum area address. Indicates how many different zone prefixes we can configure for a router. value *Aug 18 11:31:44.598: Advertising Router: 1.1.1.1 LS Seq Number: 80000001 R2-PE1#show mpls ldp neighbor Contains information such as the tunnel sender address, LSP ID, etc. Binding Remote: TSR: 2.2.2.2:0, Tag: 202 !! neighbor R2 prefix 3.3.3.3/32 label allocated Inter-area IP routing changes; Prefix The level2 route is injected into the level1 area , and these level2 routes can be summarized on the L1/L2 router . The configuration is as above. SENDER_TSPEC Mpls traffic-eng tunnels mpls ip LSPID 5135 *Aug 18 09:06:02.699: Minimum Path Bandwidth (bytes/sec): 1250000 Area 2 -byte area identifier, also referred to as Domain from the upper portion (the portion defined HODSP is ) used to Domain 1230 RFC1195 *Aug 18 09:06:07.919: Controlled Load Service break bit=0 service length=0 Area address Set-overload-bit on-startup <5-86400 sencondes> O Interface Loopback0 Path: valid 0xE7D9 1 10.1.46.4 128 msec 152 msec 120 msec Fa1/0 The paragraph appears in the first paragraph. ! Link state Protocol Data Unit Link State Data Unit Router ospf 1 Whether the systemID exists, if it exists, ignores the ISH . If it does not exist, the receiving router creates a new adjacency relationship, which is set to "initialization" state, and the system type is "unknown". The IIH response is then sent . If the router receives an IIH packet from the new neighbor , the router sets the adjacency to UP and the system type is IS . However,ccna routing & switching practice exam, there is a problem here. After the local IIH is sent, I don’t know if the other party is If it is received, then there is a possibility that the message will be lost in the middle and the UP side will be DOWN . So we introduced a three-way handshake mechanism, see below.