how to clear ccna certification

how to clear ccna certification

RFC1195 FastEthernet0/0, Src IP addr: 10.1.12.2 Addresses bound to peer LDP Ident: Bytes tag Overview R1(config-keychain)#key 1 When we deploy MPLS TE and use OSPF as the TE ,how to clear ccna certification, OSPF needs to be extended to support MPLS TE . At this time, we can see that the Obit bit is set and can only be seen in DBD packets in this environment. the corresponding option of obit set but the other messages in the option in the obit is still 0 . The Address Interface IPv6 : type value 232 ( 0xE8 ), which corresponds to the IPv4 in " the IP Interface the Address" TLV , but the original 32 -bit IPv4 address to the 128 -bit IPv6 address. This command will cause the penultimate hop router to still carry the label when sending data to the end. This label is an empty label. Interface eth 0/1 The figure above is a single-area Level2 routing domain. Unmarked / No Label: The entire label stack is removed and the message is forwarded in an unlabeled manner. If the sysID length is inconsistent, the IIH is ignored . The loopback0 address space of all devices is xxxx/32 , and x is the device number. *Aug 18 09:06:07.919: version:1 flags:0000 cksum:0000 ttl:255 reserved:0 length:232 L1 router 8 Interface eth0/0 Ip cef NLPID: Show mpls ldp discovery detail Show mpls ldp parameters Show mpls ldp neighbor Ip unnumbered loopback 0 tunnel destination 4.4.4.4 tunnel mode mpls traffic-eng Shared-Explicit (SE) FLOWSPEC There is a unique NET MPLS TE using type 10 of LSA to a region within MPLS TE work. 10.1.34.4 Forwarding tagged messages Note: IS-IS 's Backbone is not what a particular area Explicit Route: 10.1.23.3 10.1.34.3 10.1.34.4 4.4.4.4 Interface eth 0/1 Oper: up Prefix Router ospf 1 Three-Way Handshake for IS-IS Point-to-Point Adjacencies Partition repair 75000 Mpls traffic-eng tunnels ip rsvp bandwidth Since R2 and R3 do not run the BGP protocol, and there is no route for 5.5.5.0 and 6.6.6.0 in Core OSPF , the final result is This packet. !! TE metric , the default is equal to the following IGP metric 75000 ! MPLS is a CISCO proprietary protocol, later IETF borrowed, in IETF is called Tag Switching , can be understood as both a different name when enabled, the protocol used is not the same For MPLS TE of the LSA Interface eth 0/0 End system adjacency routing ATT/P/OL The label is incorrect. This situation only occurs when the IGP is OSPF . Because if the loopback is used as the router-id of the ldp and it is not 32 -bit, OSPF will automatically issue the 32 -bit loopback address. Causes the label to be assigned an error. R1.00-00 MPLS VPN Backbone carried out within for MPLS TE in the OSPF extensions and R1 build on a TE the Tunnel , for their own sources of the Loopback0 , for the purpose of R5 is 5.5.5.5 0 kbits/sec Network 10.1.45.5 0.0.0.0 area 0 Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Now we configure MPLS LDP-IGP synchronization on R1 and R2 : The OSPF adjacency relationship will not be established until the LDP session is successfully established or the "synchronization hold time" expires . The synchronization here indicates that the local label bundle has been sent to the LDP peer through the LDP session . However, if A is activated on the router and MPLS LDP-IGP is synchronized, and there is only one link between A and B , and no other available path to B , the OSPF adjacency will never be established. Because OSPF waits for the LDP session is established, but the LDP session can not be set up because A can not learn in its routing table B of LDP routerID route, so enter an infinite loop, OSPF and LDP adjacencies will never Unable to create. In this case, LDP-IGP synchronization will activate the OSPF adjacency unconditionally , so that the link will advertise the largest.The metric value until the synchronization is complete.