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VF LAG # https://bugzilla.redhat.com/show_bug.cgi?id=1642355#c13 1. Feature description: i. High Availability and load balancing for Virtual Functions of different physical ports in Switchdev mode. 2)Precondition: a. Need to create at least 1 VF on both Physical port and unbind the VF’s b. Mov...

HUAWEI CISCO IEEE Introduction Link Aggregation Control Protocol (LACP), LACP, as specified in IEEE 802.3ad, implements dynamic link aggregation and de-aggregation, allowing LACP-enabled switches at both ends to exchange Link Aggregation Control Protocol Data Units (LACPDUs). LACP provides a standard negotiation mechanism that a Huawei swi...

Red Hat Enterprise Linux Network Performance Tuning Guide how to tune your 100G host 100g Network Adapter Tuning PACKET RECEPTION IN THE LINUX KERNEL What is the relationship of DMA ring buffer and TX/RX ring for a network card? https://stackoverflow.com/questions/47450231/what-is-the-relationship-of-dma-ring-buffer-and-tx-rx-ring-for-a-netw...

kdump kdump early kdump grubby # config kdump # install kexec-tools package: yum install kexec-tools # The option crashkernel must be added to the kernel command line parameters in order to reserve memory for the kdump kernel: grubby --update-kernel=ALL --args="crashkernel=256M" # The location of the kdump vmcore can be specified in /etc/k...

External Port可以为外部端口提供DNS等服务。 install vms install two vms on both node rhel_version=rhel$(rpm -E %rhel) # libvirt && kvm yum -y install virt-install yum -y install libvirt yum install -y python3-lxml.x86_64 rpm -qa | grep qemu-kvm >/dev/null || yum -y install qemu-kvm if (($rhel_version < 7)); then service libvirtd rest...

install vms install two vms rhel_version=rhel$(rpm -E %rhel) # libvirt && kvm yum -y install virt-install yum -y install libvirt yum install -y python3-lxml.x86_64 rpm -qa | grep qemu-kvm >/dev/null || yum -y install qemu-kvm if (($rhel_version < 7)); then service libvirtd restart else systemctl restart libvirtd ...

可以设置localnet属于某个vlan，这样从localnet出去的报文都携带vlan id， 这样可以让连接到localnet所属交换机的VM属于某个vlan。 TOPO outside outside | | |phy nic |phy nic +--------------+------------+ +-------------+-------------+ |ovs bridge on hv0 | |ovs bridge on hv1 ...

如果虚拟机里面有容器，可以通过配置子接口的方式把container接入OVN网络， 就是创建容器的lsp的时候，把VM的VIF当作父接口。 当需要向容器发送报文时，先把报文发送到VM的VIF（进而找到HV）， 然后再由HV上的ovs根据目的mac为报文打上vlan tag，发送到VM里面。 也就是说，这个tag只有ovs处理，外部看不到它。 而且假如vm1中的container1使用tag2，vm2中的container2使用tag3，他们之间也是可以通信的。 install vm 在两台机器上各安装两个虚拟机 rhel_version=rhel$(rpm -E %rhel) # libvirt && kvm yum -y install virt-instal...