> For the complete documentation index, see [llms.txt](https://lwang010.gitbook.io/longw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lwang010.gitbook.io/longw/mlops/chap-3.-hardware-maintain/network-topology/case-trouble-shotting.md).

# \[trouble-shooting] interface

```
sudo vi /etc/network/interfaces
virsh net-edit default
ifcfg-bond1
sudo apt install traceroute
traceroute xxx.xxx.xxx.xxx
ping xxx.xxx.xxx.xxx mtu9000
ping -M do -s 8972 xxx.xxx.xxx.xxx
sudo vi /etc/network/interfaces
traceroute xxx.xxx.xxx.xxx
ethtool enp1s0f0
sudo ifconfig bond0 mtu 9000
ethtool bond0
ping -M do -s 8972 xxx.xxx.xxx.xxx
ip neighbor show
traceroute -i bond0 xxx.xxx.xxx.xxx
traceroute -i eth0 xxx.xxx.xxx.xxx
ifconfig
sudo vi /etc/network/interfaces
```