去年年初，为了体验4k的“塞尔达传说-旷野之息”，我升级了我的电脑，并在18年不断完善，目前经过optane加速的4T硬盘，速度提升非常显著，很是喜欢。但电脑里有些录音，以及家庭照片，想随时观看，而不想开电脑，另外也起到备份的作用（数据无价），所以一直在考虑采购一台NAS，但感觉现在的NAS及配件（硬盘）功能比较弱（其实就是没米。。。），所以就考虑利用现有资源，把1T的闲置移动硬盘挂载到 WRT1200路由器下，这样 Win/Mac/手机 通过sshfs/samba远程挂载目录，这样可以体验简易NAS，等时机成熟了再考虑NAS，此篇主要总结如何挂载移动硬盘，由于环境版本的不同，总结中的内容可能跟读者遇到的会有少许差异，如遇到问题，可自行google或baidu

有时候通过LEDE的luci直接挂载不起作用，也弄不明白为啥，所以还是CLI最靠谱。另外在openwrt里，移动硬盘的格式最好是ext3或ext4，这样效果高，问题少。另外就是最开始我想用sshfs，但后来发现windows访问sshfs效果非常不好，所以对于windows，就换回了samba服务器，速度不错，可以达到平均60MB/s 上下

另外Samba配置，可以参考我之前的文章 Deploy Samba on OpenWRT

1. 国内更新源，这样就可以随便更新软件了

src/gz arm_core https://mirrors.ustc.edu.cn/lede/releases/17.01.6/targets/mvebu/generic/packages
src/gz arm_base https://mirrors.ustc.edu.cn/lede/releases/17.01.6/packages/arm_cortex-a9_vfpv3/base
src/gz arm_luci https://mirrors.ustc.edu.cn/lede/releases/17.01.6/packages/arm_cortex-a9_vfpv3/luci
src/gz arm_packages https://mirrors.ustc.edu.cn/lede/releases/17.01.6/packages/arm_cortex-a9_vfpv3/packages
src/gz arm_routing https://mirrors.ustc.edu.cn/lede/releases/17.01.6/packages/arm_cortex-a9_vfpv3/routing
src/gz arm_telephony https://mirrors.ustc.edu.cn/lede/releases/17.01.6/packages/arm_cortex-a9_vfpv3/telephony

完整阅读

Cisco finally published the YangSuit at Devnet at Feb 2021, that can be downloaded and used by customer, and it is Free! I updated the installation section of the article to use the public version, other section should similar and not update.

Cisco YANG Suite provides a set of tools and plugins to learn, test, and adopt YANG programmable interfaces such as NETCONF, RESTCONF, gNMI and more.

YANG Suite will provides network operators with a common tool to interact with Cisco IOS XE, IOS XR, and the NX-OS Network Operating Systems as they look to modernize their network management and migrate from traditional network management tools.

https://developer.cisco.com/yangsuite/?utm_campaign=yang21&utm_source=social&utm_medium=dntwitter-yang-ww

Install

xxx:~ xxx$ git clone https://github.com/CiscoDevNet/yangsuite
xxx:~ xxx$ cd yangsuite/docker/ ; ./gen_test_certs.sh
xxx:docker xxx$ pwd
/Users/xxx/yangsuite/docker
xxx:docker xxx$ docker-compose up
Creating network "docker_default" with the default driver
Creating volume "docker_static-content" with default driver
Creating volume "docker_uwsgi" with default driver
Building yangsuite
……

1. Config CIMC (Cisco Integrated Management Controller)

– Connect Display/Mouse to UCS, and FJ45 to CIMC Port

– Power on UCS, then press F8, config IPv4/GW, as follow

完整阅读

Introduction

Now Cisco had integrated BNG feature to XRv9000 platform in new version (from 631), that can let customer integrade the feature in their NFVI Infrastructure, that will flexible deploy the BNG in same Server Box. And the article will set up a simple vBNG environment that build by VIRL + XRv9000, and simple test IPoE/PPPoE. That environment will help you to easy TS vBNG PI issue, and packets paths.

Prerequisites

Introduction

Now more customer complains their Peering network not flexible and hard to control, that will cause peering link’s utilization not balance and waste of resources. As follow the example on Router-2, customer peering device connect to multi ISP, each ISP sends full internet route, select only based on the BGP. BGP select rule only based on the route but not real traffics, that may be cause port-A’s traffics have 8G, but port-B and port-C only have 4G, if want to adjust BGP select, only change RPL that more complex, and due to route from internet and multi ISP, so route maybe change at some time, in order to balance peering link, customer must continue to adjust their RPL.

Could we have more flexible and simplest way to resolve the issue? The answer is Yes 🙂 we can achieve the task by Segment Routing – Egress Peer Engineering. Now some customer had deployed the solution, that combine NetFlow, Openbmp to check AS/traffics of prefix, then send BGP LU(EPE label) to ingress node, and easy to control traffics.

完整阅读