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HiI am somewhat puzzled by EIGRP's summarization when it says that next hop is null 0. From BSCI book I understand that this technique, of forwarding packets for unknown subnets to a null interface, somehow suppose to prevent routing loops but I can'...
HiI'm quoting from Cisco's Building Cisco Scalable Internetworks book, chapter on EIGRP:"If a query reaches the edge of the autonomous system, the original query is answered. However, then the edge router initiates a new query in the other autonomous...
HiI have 2 questions regarding loopback interfaces usage for OSPF.1) What are the reason or advantages behind using an exact address (ex: network 192.168.1.254 0.0.0.0 area 0) over a whole subnet (ex: network 192.168.1.254 0.0.0.255 area 0) when sett...
HiCan anybody briefly explain what is SNAP and what is it used for??I understand how a datalink layer protocol implementing the LLC sublayer portion would use multiplex and dimultiplex frames to/from the appropriate network layer protocols using the ...
HiCan anybody please explain why would one need a layer 3 switch/router to route between multiple VLANs??For instance, let's say you have 2 switchs A and B. A and B have 2 VLANs each. Now I connect A and B with a trunk link. Wouldn't the trunking pro...
Hi RickThanks for the feedback.Regarding number 2, I am currently studying for CCNP BSCI exam and watching CBT nuggets videos. At one point the guy says that it's a better solution to use the loopback address because it never goes down as a hardware ...
ahaok, so using your example, where switch A has vlan1 and switch B has vlan1, how would you connect the two? I would guess that you probably do not need a trunk link for this case.My confusion is that switch would keep a forwarding table, associatin...