When there are multiple routes to the same destination, BGP (Border Getaway Protocol) on Huawei devices:
When there are multiple routes to the same destination, BGP (Border Getaway Protocol) on Huawei devices:
The Multiple Spanning Tree Protocol (MSTP) was originally defined as the IEEE 802.1s standard protocol. Now the standard IEEE 802.1Q-2005 includes MSTP. The basic role of this protocol is to prevent L2 loops. I do not want to explain MSTP in details, as this can be easily found on the Internet. I just want to show you:
Let’s assume that we have the following physical topology:
GVRP stands for GARP VLAN Registration Protocol and is a GARP application that registers and deregisters VLAN attributes. It uses Generic Attribute Registration Protocol (GARP), to maintain and propagate dynamic VLAN registration information, throughout GVRP enabled devices on the network.
GVRP lets a device to propagate local VLAN registration information to other participant devices, and to dynamically update the VLAN registration information from other devices to its local database, including active VLAN members and through which port they can be reached. All GVRP participants on a bridged LAN maintain the same VLAN registration information. The VLAN registration information includes both manually configured local static entries and dynamic entries from other devices.
There are 3 different registration modes:
Let’s assume that we have a Frame Relay topology like in the picture below. We want to have full IP connectivity between our ‘labnario’ routers. To demonstrate, how to configure different types of Frame Relay interface, I will use:
Let’s start with labnario1 configuration.
<labnario1>system-view [labnario1]interface Serial0/0/0 [labnario1-Serial0/0/0] link-protocol fr [labnario1-Serial0/0/0] fr map ip 123.100.1.2 102 broadcast [labnario1-Serial0/0/0] fr map ip 123.100.1.3 103 broadcast [labnario1-Serial0/0/0] ip address 123.100.1.1 255.255.255.0
Network administrators often need to capture packets, on switches or routers, to locate faults. Some devices do not support remote mirroring, that’s why administrators have to go on-site to capture packets, using local mirroring.
We have a useful command (capture-packet …), on some devices, to catch packets remotely. When taking S5700 switch into consideration, we can capture all packets from an interface (port mirroring) or packets matching specified rules (traffic mirroring). These capture packets can be sent to FTP or TFTP servers and displayed on terminal screen. CX600 and NE40E routers with V6R3 software version can send capture packets to local CF card (name.cap file).
Let’s look at this command:
[Huawei]capture-packet ? acl Acl cpu Packet send to cpu interface Ingress Interface
As you can see you can use port or traffic mirroring. You can also catch packets sent to CPU.
[Huawei]capture-packet interface GigabitEthernet 0/0/1 destination ? ftp-server Send to ftp server terminal Output terminal tftp-server Send to tftp server