ccna exam paper pdf

ccna exam paper pdf

E The routing table of R3 is as follows (omit direct route): OutLabel : Ethernet0/0, 201 RSVP Signalling Info: Interface FastEthernet0/0 104 Level2 : Backbone , a collection of consecutive L2 routers (including L1/L2 router ); Backbone is made up of all L2s (including L1/L2) SRM and SSM are used to coordinate diffusion and database synchronization Tunnel mpls traffic-eng autoroute metric relative z LSA Configuration command Router ospf 1 0.1.123.2 Checksum: 0x6FEB Length: 132 O Was used to replace TLV128 . Type 10 flooding range only in this area TLV The route is normal, and all three routers can learn the route of the whole network. and so: Version = 0 length in words = 7 service id = 5, service length = 6 We open interface authentication between R1 and R2 : " MPLS technology architecture."*Aug 18 04:37:06.239: Minimum Path Bandwidth (bytes/sec): 1250000 State Time since created: 10 minutes, 5 seconds Time since path change: 9 minutes, 49 seconds 10.1.23.3 [MPLS: Label 300 Exp 0] 0 msec 0 msec 0 msec OSI terminology Ip cef (support) does not announce the direct connection between R1-R5 and R4-R6 into OSPF The role of Designated IS ( DIS ) Reservable Bandwidth[4]: A very important problem in MPLS networks is the synchronization of LDP and IGP . The so-called synchronization means that both IGP and LDP recognize that a link is the outbound link of the message to be forwarded . For example, in the above figure, all four routers run OSPF and activate LDP . Then on R1 , if it goes to the route 3.3.3.3/32 , the next hop in the routing table is R2 (assuming we adjust the cost ), and at the same time we receive the bundle of 3.3.3.3/32 prefix sent by R2 . The label 401 ,ccna exam paper pdf, then IGP and LDP are synchronized at this time, and R1 can normally use R2 as the next hop to forward MPLS label messages.