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NAT64 and DNS64: Running an IPv6-Only Network

NAT64 and DNS64: Running an IPv6-Only Network

Deploy NAT64 with DNS64 to reach IPv4-only services from IPv6-only clients: prefix choice, resolver config, 464XLAT and failure modes.

admin admin 2026-10-14
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Cisco IOS-XR OSPFv3 Address Family Configuration

Cisco IOS-XR OSPFv3 Address Family Configuration

Configure OSPFv3 address families on Cisco IOS-XR: enable IPv6 unicast under router ospfv3, attach areas and interfaces, then verify with show ospfv3

admin admin 2026-10-13
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IPv6 ND Inspection and Source Guard Configuration

IPv6 ND Inspection and Source Guard Configuration

Stop IPv6 address spoofing on access switches: ND inspection policies, device tracking binding tables, source guard and RA guard working together.

admin admin 2026-10-12
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BGP Unnumbered (RFC 5549) Design and Verification

BGP Unnumbered (RFC 5549) Design and Verification

Build a BGP unnumbered spine-leaf fabric: IPv6 link-local peering, RFC 5549 IPv4-over-IPv6 next hops, peer groups and verification commands.

admin admin 2026-10-12
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IPv6 SLAAC vs DHCPv6: An Enterprise Decision Guide

IPv6 SLAAC vs DHCPv6: An Enterprise Decision Guide

Choose between SLAAC and DHCPv6 for enterprise IPv6: RA flag combinations, the Android limitation, prefix delegation, and where each model breaks down

admin admin 2026-10-12
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华为交换机 IPv6 ND 与 RA 配置及验证

华为交换机 IPv6 ND 与 RA 配置及验证

华为交换机 IPv6 ND 与 RA 配置完整指南：接口使能 IPv6、ND 邻居发现与静态表项、undo ipv6 nd ra halt 开启路由器通告、SLAAC 与 DHCPv6 的 M/O 标志位选择，附 display 验证命令与 RA guard 安全加固。

admin admin 2026-10-09
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DS-Lite: Running IPv4 over an IPv6-Only Access Network

DS-Lite: Running IPv4 over an IPv6-Only Access Network

How DS-Lite works and how to configure it: the B4 and AFTR roles, 192.0.0.0/29 softwire addresses, MTU overhead and AFTR scaling.

admin admin 2026-10-04
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IPv6 SLAAC vs DHCPv6: RA Flags M, O and A Explained

IPv6 SLAAC vs DHCPv6: RA Flags M, O and A Explained

Understand IPv6 Router Advertisement flags: M and O for DHCPv6, the A flag for SLAAC, router and prefix lifetimes, and common misconfigurations.

admin admin 2026-10-03
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IPv6 Address Planning for Enterprise Networks

IPv6 Address Planning for Enterprise Networks

Plan enterprise IPv6 addressing: the /48 to /64 hierarchy, interface-ID choices, ULA policy and the aggregation rules that keep routing sane.

admin admin 2026-10-01
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NAT64 and 464XLAT: Running an IPv6-Only Network

NAT64 and 464XLAT: Running an IPv6-Only Network

Deploy NAT64 with DNS64 and 464XLAT for IPv6-only access: prefix discovery, CLAT on the client side, and the failure modes to plan for.

admin admin 2026-10-01
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