Deep dive into Kernel

DCP : Dedicated Charging PortCDP : Charging Downstream Port DCP- Strictly for power only- No need host connection- No data transfer CDP- Can transfer data- Up to 1.5A to USB Peripheral devices DRD : Dual Role Device [Reference] http://www.sealevel.com/support/article/AA-00535/0/What-is-the-difference-between-a-battery-charging-USB-port-and-a-standard-USB-port.html DRDhttps://e2e.ti.com/support/a..

shell@grouper:/ # getprop | grep adb [init.svc.adbd]: [running] [persist.sys.usb.config]: [mtp,adb] [ro.adb.secure]: [1] [service.adb.root]: [1] [sys.usb.config]: [mtp,adb] [sys.usb.state]: [mtp,adb] ADB as tcpip $ getprop | grep adb [init.svc.adbd]: [running] [persist.sys.usb.config]: [mtp,adb] [ro.adb.qemud]: [1] [ro.adb.secure]: [1] [service.adb.tcp.port]: [5555] [sys.usb.config]: [mtp,adb] [..

@plugins/flowprobe/node.c add_to_flow_record_state

########### L2 record########## flowprobe params record l2 active 2ipfix flushflowprobe feature add-del TengigabitEthernet4/0/0 l2 set ipfix exporter collector 192.168.1.254 src 192.168.1.253 ########## # L3 record ########## flowprobe params record l3 active 2flowprobe feature add-del loop0 ip4 ################################### # If record L3# . if interface does not have IP address, there is..

In a single machine, user want to use VPP as L2 gateway.But uplink is general Linux interface. In this case, VPP have to forward packet to Linux host. This case can be easily applied by tap interface of VPP. loopback create set int l2 bridge loop0 1 bvi set int ip address loop0 192.168.1.253/24 set int state loop0 up tap connect lstack address 192.168.1.254/24 set int l2 bridge tap-0 1 set int s..

Commandset ipfix exporter collector 192.168.6.2 src 192.168.6.1 template-interval 20 port 4739 path-mtu 1500 Referencehttps://en.wikipedia.org/wiki/IP_Flow_Information_Export

library 설치 pip install slackclient slack bot 을 만들기 위해서 slack bot token 과 bot id 를 알아야 한다.

Slack Web API : https://api.slack.com/ Bot User Page에서 새로운 봇을 만든다. bot 의 이름을 입력한다. "Add bot integration"을 누르면 봇의 토큰이 나온다. 참고: https://www.fullstackpython.com/blog/build-first-slack-bot-python.html

for i in ${DEV_LIST[@]};do echo $idone #!/bin/bash # define array # name server names FQDN NAMESERVERS=("ns1.nixcraft.net." "ns2.nixcraft.net." "ns3.nixcraft.net.") # get length of an array tLen=${#NAMESERVERS[@]} # use for loop read all nameservers for (( i=0; i