Network Engineer – F.O.C.U.S Follow One Course Until Successful
IPSec can provide four important services: Confidentiality, data integrity, authentication, and anti-replay protection. Each service can be described in the following ways: • Confidentiality is attained through packet encryption, which prevents packets from being read if they are intercepted. •…
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The primary difference between DMVPN Phase I and DMVPN Phase II is that, in DMVPN Phase II, spoke routers are able to create dynamic tunnels with other spoke routers, whereas in DMVPN Phase I, they are not. The primary benefit…
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DMVPN uses NHRP to dynamically learn the NBMA address of other routers that are a part of the same network. NHRP is a client-server protocol. The DMVPN hub acts as the NHRP server, and the spokes are NHRP clients. Only…
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EIGRP The summarisation command is done on the interface you can summarise or prevent some route to be advertise with summarisation . (config-if)#ip summary-address eigrp # ( summary address ) ether all network or the one you want to advertise…
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To make equal cost balancing we need minimum 2 routes by looking at the topology metric : show ip eigrp topology ( network address and mask ) or show interface ( interface ) Then you can match the metric parameters…
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Reminder : For a path to become an Feasible Successor the FD must be less or equal then the AD x Variance ( 1 by default ) Commands usefull for understanding and managing Path Selection Show ip route Show ip…
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Configure the Bri interfaces on each routers R1(config)#interface bri 0 R1(config-if)#no ip address R1(config-if)#isdn switch-type basic-ni R1(config-if)#isdn spid1 100000001000100 R1(config-if)#isdn spid2 100000001100100 R1(config-if)#dialer pool-authorise-user 1 R1(config-if)#encapsulation “ppp” or R1(config-if)#ppp authentication chap R2(config)#interface bri 0 R2(config-if)#no ip address R2(config-if)#isdn switch-type basic-ni R2(config-if)#isdn…
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Create a tunnel on both routers (config)#ipv6 unicast-routing ( enable ipv6 routing ) (config)#interface tunnel 0 (config-if)#ipv address ( ipv6 address ) (config-if)#tunnel source ( the source IPv4 address of the local interface ) (config-if)#tunnel destination ( destination IPv4 address of the interface that is…
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Understanding PIM PIM is called protocol-independent: regardless of the unicast routing protocols used to populate the unicast routing table, PIM uses this information to perform multicast forwarding instead of maintaining a separate multicast routing table. PIM is defined in RFC…
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N WLLA OMNI N = next hop reachability W = weight, bigger is better L = local preference, bigger is better L = locally injected preferred over BGP learned A = AS path length, shorter is better O =…
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