Cisco 400-101 : CCIE Routing and Switching Written Exam

Exam Code: 400-101

Exam Name: CCIE Routing and Switching Written Exam

Updated: Aug 19, 2026

Q & A: 150 Questions and Answers

400-101 Free Demo download

PDF Version Demo PC Test Engine Online Test Engine

About Cisco 400-101 Exam

Our 400-101 exam dumps will include those topics:

Network Principles 10%
Layer 2 Technologies 13%
Evolving Technologies 10%
VPN Technologies 13%
Infrastructure Services 12%
Layer 3 Technologies 37%
Infrastructure Security 5%

For more info visit: Cisco 400-101 Exam Reference

400-101 - CCIE Routing and Switching (v5.1)

The 400-101 exam is part of the new CCIE Routing and Switching (v5.1) certification. This exam measures your ability and skills related to: configure, validate, and troubleshoot complex enterprise network infrastructure; understand how infrastructure components interoperate; and translate functional requirements into specific device configurations.

Reference: https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/ccie-routing-switching.html

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Cisco 400-101 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Layer 3 Technologies	40%	- IPv4 and IPv6 addressing 1. BGPv4 and BGP for IPv6 2. Route redistribution, filtering, summarization 3. EIGRP for IPv4 and IPv6 4. Static routing, RIP, OSPFv2/v3 5. Multicast routing (PIM, IGMP, MSDP)
Topic 2: Infrastructure Security	10%	- Control plane policing 1. Unicast Reverse Path Forwarding 2. AAA, TACACS+, RADIUS 3. Routing protocol authentication 4. Device hardening, access control lists
Topic 3: VPN Technologies	10%	- IPsec, GRE, DMVPN 1. MPLS, L3VPN, L2VPN 2. VRF-lite, VRF-aware services 3. GET VPN, FlexVPN
Topic 4: Network Principles	10%	- Network theory 1. IOS vs IOS XE architecture 2. IP operations (ICMP, fragmentation, TTL, MTU) 3. Cisco Express Forwarding (RIB/FIB/LFIB/Adjacency) 4. Control plane vs Forwarding plane 5. TCP operations (MSS, PMTU, windowing)
Topic 5: Layer 2 Technologies	15%	- LAN switching 1. Spanning Tree Protocol (802.1D, PVST+, RSTP, MSTP) 2. Switch security, private VLANs, storm control 3. UDLD, LLDP, CDP, SPAN/RSPAN/ERSPAN 4. EtherChannel, LACP, PAgP 5. VLANs, trunking, DTP, VTP
Topic 6: Infrastructure Services	5%	- Network address translation 1. Network Time Protocol 2. First Hop Redundancy Protocols (HSRP, VRRP, GLBP) 3. Quality of Service mechanisms 4. SNMP, NetFlow, IP SLA
Topic 7: Evolving Technologies	10%	- Network virtualization 1. Cloud connectivity 2. Network automation tools 3. SDN, programmability, APIs

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