Problem Description

Follow Topology

 10.200.0.24               10.200.0.26    10.200.0.32
   +------+      +------+     +------+     +------+
   |XiAn  |      | SZ   |     |HKBR  |     |Canada|
   |Huawei+------+      +-----+ASR9k +-----+ASR9k |
   +------+      +------+     +------+     +------+

For the issue, HuaWei is Head, asr9k should mid and end node. And Huawei found they put the traffics to Canada by LDP label, not TE label. So traffics should arrive to HK ASR9k by LDP label, then forwarding by LDP too from HK ASR9k to Canada. That not match normal scenario.

For normal scenario, should use TE label from head to end. And after Huawei put traffics to TE LSP, the issue will recovery to normal. Refer to why Huawei send traffics by LDP, that should their issue, will fix in future by them, but even if to do that, 9k shouldn’t drop packets. We need find whether packets drop at 9k and due to label issue first. Now set up test environment in customer site. waiting update.

完整阅读

很多东西不记录就会忘记，今天有些时间，索性把这几年的跑步经历总结一下~ 从开始跑步到现在也有段时间了，为什么要跑步？主要是为了减肥健身。最喜欢夏天跑步，跑到全身湿透的感觉真是爽的没话说^_^ 春天和秋天较好，我实在不太适合冬天跑步，跑一次难受一次，不是感冒就是头疼。简单总结下这几年的跑步经历吧：

2010年

这年的北马是我工作后的第一次长跑、也是我第二次参加关于长跑的比赛（第一次是高中时代表学校参加海淀区高中生冬季长跑比赛，7公里）。那年我考上了北工大的MBA。那天冒着雾霾和小雨，瘸着腿完成了北马10公里，成绩记得是1小时零8分，跑完后深秋的风刮在身上真是冷呀，但我第一次感受到大家一起跑步的快乐，而且还有周围路人的鼓舞！

2011年

这年的北马，由于其他原因，我错过了，但那年我完成了我人生中的第一件大事 🙂

备份邮件：

我的outlook是由“Exchange+本地文件夹”组成的，直接把下面整个文件夹备份就可以了，这里包含了你所有outlook的邮件，日历和本地文件夹，对于outlook 2016，请看最后部分

/Users/<user>/Documents/Microsoft User Data/Office 2011 Identities/Main  Identity

备份恢复：

在新MAC上打开新的outlook，不要设置任何账号，然后选Tools中得Import：

Not use ubuntu for long time… some useful commands had forgot, summary again:

1. Permit root login
gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf –> “greeter-show-manual-login=true”
sudo passwd root
reboot

2. Change language
gedit /etc/default/locale –> change what do you want
reboot

3. Script couldn’t run on linux “bad interpreter: No such file or directory”
that should dos format, need change to unix format
vi xxx
check format by “:set ff” or “:set fileformat”
change format by “:set ff=unix” or “:set fileformat=unix”
:wq

4. Enable ssh service
sudo apt-get install openssh-server
gedit /etc/ssh/sshd_config –> “PermitRootLogin yes”
restart by “/etc/init.d/ssh restart”
check by “ps -ef|grep ssh”
reboot

5. Disable firewall
check whether enable by “ufw status”
disable by “ufw disable”

6. Change update source
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
sudo vim /etc/apt/sources.list
sudo apt-get update

Refer to default source, can reference this article.

7. Change ip address, add/del GW route, add text to file
sudo ifconfig eth1 up
sudo ifconfig eth0 down
sudo ifconfig eth1 up 10.0.0.30 netmask 255.255.255.128
sudo route add -net 0.0.0.0/0 gw 10.0.0.126 dev eth1
sudo echo ‘nameserver x.x.x.x’ >> /etc/resolv.conf

8. Install DHCP Server

sudo apt-get install isc-dhcp-server
vim /etc/default/isc-dhcp-server