LOG 归档 - 第9页共139页

Junos DHCP Snooping and IP Source Guard on EX

Configure DHCP snooping, IP source guard and dynamic ARP inspection on Juniper EX switches: trusted interfaces, the binding table, and verification pe

admin 2026-10-07

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Extreme EXOS VLAN Configuration: Tagged and Untagged

Configure VLANs on ExtremeXOS: create a VLAN, move ports out of the default VLAN, add them tagged or untagged, assign an IP and verify with show vlan

admin 2026-10-07

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Linux IRQ Affinity, RSS, RPS and XPS Tuning

Tune the Linux network receive path: RSS queue counts, IRQ SMP affinity, RPS and RFS CPU maps, XPS transmit steering and how to verify softirq distrib

admin 2026-10-07

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NIC Offloads: TSO, GSO, GRO and Checksum Tuning

Understand and tune NIC offloads with ethtool -K: TSO, GSO, GRO, LRO and checksum offload, when to disable them for capture or bridging, and how to pe

admin 2026-10-07

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OpenSSH Server Hardening: sshd_config Guide

Harden an OpenSSH server with a single drop-in config: key-only authentication, no root login, AllowUsers allowlists, modern ciphers and a tested, rev

admin 2026-10-07

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100G and 400G Optics: LR4, ER4 and FR4 Reach Guide

Pick the right 100G/400G transceiver: SR4, DR4, FR4, LR4, ER4 and CWDM4 classes, real reach limits, connector types, FEC requirements and how to read

admin 2026-10-07

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GPON FTTH ODN Design and Power Budget

Design a GPON FTTH optical distribution network that closes: ODN loss classes, splitter insertion loss, connector and splice budgets, design margin an

admin 2026-10-07

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EVPN Type-5 IP Prefix Routes and Symmetric IRB

How EVPN type-5 IP prefix routes (RFC 9136) advertise subnets across a VXLAN fabric with symmetric IRB, why an L3VNI is required, and how to verify th

admin 2026-10-07

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Cisco FabricPath vs TRILL: Data Center Fabrics

How Cisco FabricPath and TRILL replaced spanning tree in the data center: IS-IS control plane, MAC-in-MAC encapsulation, switch IDs, and why VXLAN EVP

admin 2026-10-07

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Cisco OTV: Overlay Transport Virtualization Guide

Configure Cisco OTV step by step: join interface, site VLAN, overlay interface, control and data groups, extended VLANs, AED election and verification

admin 2026-10-07

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