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CCIE SPv4.1 Blueprint Resources

The CCIE SP SME team has put a comprehensive list of study resources for the new CCIE SP4.1 blueprint. The complied list is in a spreadsheet designed to help you quickly find what you are looking for by organizing the content according to the exam topics. This is a very good resource for finding good information regardless of the exam. You can download the spreadsheet @ CCIE_SP_version4.1_prep_resources.xlsx. Find out more information at Cisco Learning Network.

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JUNOS Disable vs Deactivate interfaces

Confusing between disabling and deactivating interfaces on JUNOS is a common mistake that leads to all sorts of problems during implementing changes on live network boxes. Let’s look and clarify the differences quickly. Disabling an interface: Disabling an interface in JUNOS is equivlaent to interface shutdown in Cisco, it is going to take the interface administratevly down completely without impacting the configuration on that interface as you can see below. --- Interface in UP UP state [email protected]> show interfaces ge-0/0/0 terse Interface               Admin Link Proto    Local                 Remote ge-0/0/0                up    up ge-0/0/0.0              up    up   inet     172.18.0.1/24 -- Disable the interface [email protected]> …

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BGP Weight Attribute

BGP weight attribute is a Cisco proprietary path attribute that is local to the router and is used to influence local path selection on a certain router. BGP weight is the first in the list: BGP weight is the first tie breaker for best path selection on a Cisco router, the attribute is not propagated to other routers in the BGP updates and only found on Cisco routers. The path with the highest weight is selected as the best toward a destination. BGP weight values: The weight can be a number from 0 to 65,535. Paths that the router originates …

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IPv6 Tutorial

This is a collected IPv6 tutorial form IPv6 posts we have written and should be a good starting point for anyone who is just learning about IPv6. IPv6 was first formally described in Internet standard document RFC 2460. IPv6 offers more addresses, and implements features not present in IPv4. It simplifies aspects of address assignment (stateless address autoconfiguration), network renumbering, and router announcements when changing network connectivity providers. It simplifies processing of packets in routers by placing the responsibility for packet fragmentation into the end points. IPv6 overview IPv6 is also called IPng or IP next generation; it builds on …

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