LOG 归档 - 第65页共139页

RoCEv2 Lossless Tuning: PFC, ECN and DCQCN

RoCEv2 needs a lossless priority. Learn how PFC, ECN and DCQCN fire in order, why ECN marks must stay below the PFC threshold, and how to verify on th

admin 2026-09-13

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SPAN, RSPAN and ERSPAN: Choosing a Mirror Transport

Compare Cisco mirror transports: local SPAN, RSPAN over Layer 2 and ERSPAN over GRE, with their overhead, MTU traps and the checks that fix empty capt

admin 2026-09-13

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gNMI Telemetry: Dial-In vs Dial-Out for Networks

Compare gNMI and NETCONF dial-in versus dial-out streaming telemetry: subscription models, encodings, sample rates, collector sizing, security and fai

admin 2026-09-13

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NETCONF and RESTCONF on IOS XE: Enable, Verify, Curl

Enable NETCONF and RESTCONF on Cisco IOS XE, verify the YANG management process, and read or patch interface data with curl and real YANG paths.

admin 2026-09-13

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MC-LAG ICCP Failure: ARP, PIM and ICL Behaviour

After ICCP fails, ARP sync stops, PIM neighbours survive and the ICL carries the flood. Capture LACPDU, ARP and IGMP to prove each effect.

admin 2026-09-13

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华为交换机恢复出厂设置：三种方法的区别与验证

华为 S 系列交换机恢复出厂设置有三种方式：长按 PNP 按钮、一键恢复、清空配置文件。本文对比三者删除的内容、是否需要登录、适用场景与验证命令，避免误清设备配置。

admin 2026-09-13

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ArubaOS-CX VSX Split-Brain: ISL, Keepalive, Recovery

A VSX split brain happens when both ISL and keepalive fail. Learn the documented failure matrix, the show vsx fields that prove sync state, and recove

admin 2026-09-13

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Dell OS10 Factory Reset: delete startup-configuration

Reset a Dell PowerSwitch OS10 with delete startup-configuration and reload: the prompts to answer, what it removes, backups and rebuild steps.

admin 2026-09-13

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Arista EOS VLAN Translation and dot1q-tunnel CLI

Arista EOS tag rewriting: encapsulation dot1q VLAN translation vs dot1q-tunnel QinQ, MTU limits, MLAG interactions and show-command verification.

admin 2026-09-13

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SONiC config_db.json: Save, Reload and Replace Safely

SONiC keeps config in Redis and persists it only on request. See how save, reload, replace and load_minigraph differ, with docker and redis verificati

admin 2026-09-13

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