CCIE R&S 400-101 V5.1 Written Exam: Evaluate Proposed Changes to a NetworkPaul Adam
In this article, I will be discussing Cisco Evaluate Proposed Changes to a Network as part of Network Principles and Network Implementation and Operation CCIE Routing and Switching (R&S) V5.1 exam blueprint topics.
Network Implementation and Operation
- Evaluate proposed changes to a network
- Changes to routing protocol parameters
- Migrate parts of a network to IPv6
- Routing protocol migration
- Adding multicast support
- Migrate spanning tree protocol
- Evaluate impact of new traffic on existing QoS design
Let me summarize some of the key takeaways related to Cisco Evaluate Proposed Changes to a Network as relevant to CCIE Routing and Switching (R&S) V5.1 written exam blueprint topics.
Evaluate Proposed Changes to a Network Exam Essentials
- There are two common approaches for migrating between routing protocols, namely using administrative distance (AD) and using redistribution with a moving boundary
- Spanning Tree Protocol (STP) was originally, standardized as IEEE 802.1D most recently in 802.1d-1998, but deprecated as of 802.1d-2004 in favor of Rapid Spanning Tree Protocol (RSTP)
- IEEE introduced Rapid Spanning Tree Protocol (RSTP) as 802.1w
- When you migrate from PVST to RPVST, port status cycles through block and learning before moving to forwarding
- When you enable MST, it also enables RSTP
- Spanning Tree must use MST mode on EVC ports.
- LACP and PAGP are supported on EVC ports.
- Ports with different spanning-tree path costs can form an EtherChannel if they are otherwise compatible configured. Setting different spanning-tree path costs does not, by itself, make ports incompatible for the formation of an EtherChannel.
I sincerely hope that you found this article and video helpful. Please post your questions or suggestions in the comments and tell me how you are preparing for your CCIE Routing and Switching (R&S) V5.1 written and lab exams.