ccna exam fees in india

ccna exam fees in india

R1 # show mpls forwarding-table R1 of LFIB table The router that determines which FEC the message belongs to is the inbound LSR because it classifies and pushes the message into the label. By default, CISCO IOS does not trigger re-optimization when a link in the network can be reused by a TE tunnel , but can activate this operation. To enable re-optimization when a link becomes operational in MPLS TE , use the following command: Activate the fast-reroute feature on R1 and observe the phenomenon Information, as shown below: We see that on R2 , about 5.5.5.5 and 55.55.55.55, the R5 is the "rear" network at the end of the tunnel . The outgoing interface is tunnel0 . This means that when R2 receives data destined for these two network segments, it is placed directly into the TE tunnel . Compared to the way static routes are placed, the advantages of autoroute are shown. Except for HELLO packets based on UDP646 , other packets are based on TCP port number 646. N/P Copy this value. *Aug 18 09:06:07.919: Tunnel mpls traffic-eng autoroute announce tunnel mpls traffic-eng priority 7 7 0 packets,ccna exam fees in india, 0 bytes Mpls ip Show isis database ! Replaces both IP Reachability TLVs ( 128 and 130 ) . Uses wide metrics Path establishment and maintenance Host host 75000 Class of data – The FEC which is mapped onto it The configuration of RouterB is as follows: Hostname: R1 Router ID: 17 Router isis The configuration of R1 is as follows: ! Then go to R2 and look at it: Priority 0 : 9375000 0 kbits/sec 3bit experimental bits for QoS If the router performing load balancing is the inbound LSR of the IP packet , then it is easy to know that the received IP packet is IPv4. 15 75000 Type escape sequence to abort. 2.2.2.2/32, Flags: 0x21 (Local Prot Avail/to NHOP, Node-id) Ip cef Small to check if the MTU of both parties matches Each priority corresponds to an available bandwidth *Aug 18 09:06:07.919: Token bucket fragment (service_id=1, length=6 words Router(config)# mpls ldp neighbor [vrf vpn-name] ip-addr targeted [ldp | tdp] Then R1 will limit the establishment of targeted session of the peer , is 3.3.3.3 , which is R3 of LDP routerid , in addition, LDP session protection time is 30S , that is to say, 30S If the LDP neighbors yet up, targeted session will fail. Naturally, the protected tag information stored in the LIB is gone. Record Route: NONE 4 Ip unnumbered Loopback0 tunnel destination 5.5.5.5 Mpls ldp router-id Loopback0 Interface eth 0/0 Look at the routing table for R1 : See below for more details on how labels are handled. *Aug 18 04:37:06.243: service id = 5, service length = 6 Transport addr is generally equal to LDP ID unless it is specified by hand ( mpls ldp discovery transport-address ) . Note that here (described above) there are actually three kinds of addresses: interface IP , Transport addr , LDP ID Router ospf 100 The link between R4-R6 and R5-R6 has a bandwidth of only 20M , which obviously does not meet the requirements. Therefore, R1 will only consider the following links: TE tunnel is one-way Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 26 The tag value is 1 , and this tag can appear anywhere on the tag stack, except for the bottom of the stack. It also accepts and understands the interpretation of LSPs carrying TLV22 and TLV135 . Exist in the message Can form adjacencies with other L2 (or L1/L2 ) routers *Aug 18 04:37:06.243: Shared-Explicit (SE) *Aug 18 04:37:06.243: SESSION type 7 length 16: Connection TCP: 2.2.2.2.31044 - 1.1.1.1.646 , indicates that the LDP connection is built on TCP 's 1.1.1.1 source port 646 , to the destination 2.2.2.2 of 31044 ports. Because the 2.2.2.2 address is large, it is the initiator. Ip address 10.1.34.4 255.255.255.0 For the HDLC (Advanced Data Link Control) interface, SNPA is set to " HDLC " LDP discovery sources: PATH = 250000 bytes/sec The last byte of the NSAP is used to identify the program on the same device, similar The global configuration command metric-narrow can be restored to the original default configuration. After the above configuration is complete, R2 will send LDP through the tunnel that has been established and reaches R4 . Note that the tunnel must activate the MPLS IP. Interface loopback0 Ip address 10.1.34.4 255.255.255.0 947 The SNPA address can be obtained in several ways: DIS no backup DIS , DIS can be preempted, DIS to 3 transmission times frequency Hello PDU Assume that this is an internal network of the operator, R4 is the national trunk, R2 and R3 are left to the provincial, and the provincial internal ran IS-IS to carry the routing prefix information in the Core , and as the provincial dry exit R2 , R3 The route prefix or default route of a specific national trunk is issued. We take the default route example here. Both R2 and R3 maintain the EBGP neighbor relationship with R4 . In this case, R2 is required to be upgraded and then restarted. After the restart, IS-IS converges faster than BGP . After the first convergence, R2 to the IS-IS area. Internal flooding LSP , R1 will use R2 as the next hop of some route prefix, or the next hop of the default route. However, at this time , BGP of R2 does not converge, so that R2 is reached.The data may be discarded and black holes appear.