ccna certification questions and answers pdf

ccna certification questions and answers pdf

Route summarization on the L1/L2 router ( to level1 ) Interface loopback0 Router isis This bandwidth is reserved for the TE tunnel . If the bandwidth value is not added after the command, the default is 75% of the interface bandwidth. Frame-relay map ip 10.1.123.3 301 broadcast frame-relay map clns 301 broadcast RSVP Affinity property Affinity Attributes and mask Show ip cef detail Show tcp brief Interface Ethernet0/1 No mpls ip propagate-ttl [ forwarded | local ] Router bgp 2345 *Mar 1 00:00:32.755: ISIS-Upd: Building L1 LSP Tag rewrite with Fa0/0, 10.1.34.3, tags imposed: {303} Network 10.1.34.4 0.0.0.0 area 0 Calculated. In the figure above, the red path is calculated by CSPF . When IS-IS is running on an NBMA network, there are some problems. In CISCO IOS , a re-optimization of a TE tunnel is done every 1 hour by default . 10.1.34.4 4.4.4.4 104 RouterID , or the IP address of the interface . Router ospf 1 For example, the above figure, we can test on R2 , the configuration is as follows: 772 Type 1 length 12: Path: valid Network 10.1.24.2 0.0.0.0 area 0 LSP TLV field of Level 2 route IGP flooding About flooding Labels: 200 RECORD_ROUTE RESV R4.00-00 ISO10589 Ip cef Src 2.2.2.2, Dst 4.4.4.4, Tun_Id 0, Tun_Instance 6 RSVP Path Info: *Aug 18 09:06:07.919: R2.00-00 The loopback interface of R2 and R3 comes from this area, so there is no problem with the route of L1 , but is the direct link of R2-R4 and R3-R4 coming in? That's because these are the direct connections of R2 and R3 . You can configure the interface to be on S1 and 0 of R2 and S1/0 of R3 . Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 *Aug 18 04:37:06.239: Path Latency (microseconds):0 LSA Frame-relay map ip 10.1.123.2 301 broadcast basic concept The boundary of the area is on the router There are two ways to set the path of the TE tunnel ( Explicit explicit or Dynamic dynamic) *Aug 18 09:06:07.919: General Parameters break bit=0 service length=8 MPLS TE status No support for Ip multicast routing 1 10.1.46.4 128 msec 152 msec 120 msec 102 The average allocated traffic on the interface. STYLE Type 9 flooding range only on this link OSPF ensures the reliability of diffusion across all links Mpls ldp router-id Loopback0 1/0/0 Interface Ethernet0/0 Interface Ethernet0/0 ISO10589 Network 10.1.45.4 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 End host. For example , the ISO CLNP workstation searched by the ES-IS protocol . Holdtimer : If the adjacency relationship is not established, the receiving router creates an adjacency relationship and identifies the adjacency type ( L1 , L2 ), and sets it to the initial state until the subsequent hello packet is confirmed to confirm the adjacency. TOS 0 Metrics: 1 The last byte of the NSAP is used to identify the program on the same device, similar 0 kbits/sec LDP discovery sources: MPLS TE and MPLS VPN Hostname: R1 IP Address: Metric: 10 Test 1 : set-overload-bit However,ccna certification questions and answers pdf, not all messages with the same label belong to one FEC , because the EXP values ​​of these messages may be different and may be performed differently, so they may belong to different FECs . Assuming the bandwidth of the local physical outgoing interface is 100M , the default reservable bandwidth of rsvp is 75% . Here is 75M. Network 3.3.3.3 0.0.0.0 area 0 Router ospf 100 Et0/1 Then shut down the e0/1 port of R2 : Network 10.1.12.2 0.0.0.0 area 0 See Opaque information here, there are a number of TLV (Type Length Value), which TLV so OSPF may carry data by means of a stretchable manner. These TLVs carry specific MPLS TE data. There are two kinds of TLVs : router address TLV and link TLV. *Aug 18 11:26:02.546: Extension of IS-IS metrics 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 . !! Set overload-bit to suppress inter - area routing Network 10.1.34.4 0.0.0.0 area 0 *Aug 18 09:06:07.919: version:1 flags:0000 cksum:BFD0 ttl:255 reserved:0 length:132 Attribute Flags: 0x00000000 Router-id 2.2.2.2 Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 0, Tun_Instance 2 RSVP Path Info: *Aug 18 09:06:07.919: HOP type 1 length 12: Show ip cef detail Show tcp brief ! 569 Outgoing Remote binding: tsr: 2.2.2.2:0, tag: imp-null Path: valid See below for more details. 2.2.2.2/32 Router-id 5.5.5.5 Redistribute isis ip level-2 into level-1 route-map test The router on Lan establishes adjacency with all other routers. In OSPF , the router on the LAN only establishes adjacency with the DR . Network 10.1.45.4 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 75000 kbits/sec, Link connected to: a Transit Network ! 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 . R1(config-keychain)#exit Status: (The router address and link information in the result of capturing the packet are respectively). OutLabel : FastEthernet1/0, implicit-null RSVP Signalling Info: Verify and view Level1 area default route ! Traffic using traffic engineering uses source-based routing instead of routing based on destination IP address E The router uses PSNP to acknowledge multiple LSPs on the point-to-point link (the next one in the middle) Mpls traffic-eng tunnels ip rsvp bandwidth Establish priority In a Frame Relay network, SNPA is DLCI ES-IS Next Hop Maximum reservable bandwidth : 9375000 Number of Priority : 8 Type 7 length 16: Then shut down the e0/1 port of R2 : Isis password cisco R1#show mpls traffic-eng tunnels R1(config-if)#isis authentication key-chain test level-1 R1(config-if)#isis authentication mode md5 level-1 In this environment, all physical interfaces OSPF cost = 10 , Loopback port cost = 1 1 Remote binding: tsr: 2.2.2.2:0, tag: 200 UP 5 10.1.56.6 8 msec * 0 msec After saving the configuration and restarting, after the restart, the LSP generated by R2 is set to overload-bit first. This can be seen from the isis databse on R1 . We also enable debug isis update on R2 , and use show version | in uptime Check the startup time of the router. When the startup time reaches 120s , you can see from the debug information that R2 triggers an LSP and clears the overload-bit .