ccna past papers

ccna past papers

After R3 receives this ICMPv6 redirect message, subsequent packets will be sent directly to R2 , so there is no need to bypass R1 . 2012::2 Address-family ipv6 R1 goes to ping R4 and can ping . Table routing entry for the BGP [. 1:. 1] 2001: 5555 :: 5/128 , Version 32 Paths: (Available. 1, # Best. 1, Table Cisco) Activate IPv6 IS-iS on the interface NA 136 Ipv6 router rip RIPprocess exit Note that the above is the default metric when re-publishing from other dynamic routing protocols into this routing protocol . If you republish a local direct connection or a static route, the situation changes, as follows: Image The example here is DHCPv6 , using Router as the DHCPserver (2) Declare the loop port 1.1.1.1224 Ipv6 nd prefix 2012::/64 at xxx yyyy Configuration command Ipv6 nat We found that on R1 , the route is not best , it is very simple,ccna past papers, because NH is unreachable. The solution is simple, do next-hop-self on R2 on R3 Although the decision to forward the message is implemented by the FIB , the second layer of frame rewriting is done according to the information in the adjacency list. The second layer needs to be rewritten to include the second layer for frame forwarding. head. For Ethernet, it is the new source, destination MAC , and type field. E.g: Routing via 192.168.12.1, Serial0/0 We focus on the 2001:5555::5/128 route, the next hop is a strange address, but from the last 32bits of this address is 4.4.4.4 it is not difficult to see who passed this route to me, in addition, The out label of the prefix is 403 , and this 403 is exactly what PE2 passed to me. In other words, PE2 as 2001: 5555 :: 5/128 This IPv6 prefix assigned 403 labels, and pass this map to the PE1 , the label is actually MP-BGP generated. Then when PE1 has data to go to 2001:5555::5 is it directly labeled 403 ? Of course not, because the label 403 for MPLS Backbone in the P routers, do not understand, therefore, we also need an outer label, the label by the LDPGenerated so that our packets can be transmitted within the MPLS Backbone .