Which STP protocols does an AR router support

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An AR router supports STP/RSTP/MSTP, but does not support VBST.

Other related questions:
Which STP protocols do AR series routers support
AR series routers support Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple Spanning Tree Protocol (MSTP).

Which protocols does the ASPF firewall of an AR router support
The ASPF firewall of an AR router supports the following protocols: - File Transfer Protocol (FTP) - Hyper Text Transport Protocol (HTTP) - Internet Control Message Protocol (ICMP) - Session Initiation Protocol (SIP) - Real Time Streaming Protocol (RTSP) - Transmission Control Protocol (TCP) - Trivial File Transfer Protocol (TFTP) - User Datagram Protocol (UDP)

Which multicast protocols do Huawei AR series enterprise routers support
In versions earlier than V200R005C00, the Huawei AR Series Enterprise Routers support the following multicast protocols: -Multicast Source Discovery Protocol (MSDP) -Protocol independent multicast sparse mode (PIM-SM) -Protocol independent multicast dense mode (PIM-DM) -Internet Group Management Protocol (IGMP) -IGMP Snooping and MLD Snooping NOTE: AR150&AR200 series routers and AR1200 series routers do not support IGMP Snooping and MLD Snooping. In V200R005C00 and later versions, the Huawei AR Series Enterprise Routers support the following multicast protocols: -Multicast Source Discovery Protocol (MSDP) -Protocol independent multicast sparse mode (PIM-SM) -Protocol independent multicast sparse mode (PIM-SM) for IPv6 -Protocol independent multicast dense mode (PIM-DM) -Protocol independent multicast dense mode (PIM-DM) for IPv6 -Internet Group Management Protocol (IGMP) -Multicast Listener Discovery (MLD) -IGMP Snooping and MLD Snooping NOTE: AR120&AR150&AR160&AR200&AR500 series routers, AR510 series routers and AR1200 series routers do not support IGMP Snooping and MLD Snooping.

Which encryption protocols does the AR support
The AR supports Authentication Header (AH) and Encapsulating Security Payload (ESP) protocols. Their differences are as follows: -AH: provides data origin authentication, data integrity check, and anti-replay. The sender performs the hash algorithm on the IP payload and all header fields of an IP packet except for variable fields to generate a message digest. The receiver recalculates the message digest according to the received IP packet and compares the two message digests to determine whether the IP packet has been modified during transmission. AH does not encrypt the IP payload. AH applies to non-confidential data transmission. -ESP: provides data encryption in addition to the functions provided by the AH protocol. ESP can encrypt and authenticate the IP payload but does not protect the IP packet header. ESP applies to confidential data transmission. AH and ESP can be used independently or together. When AH and ESP are used together, ESP and AH headers are encapsulated in sequence, enhancing security.

Which encryption protocols does an AR support
AR routers support the Authentication Header (AH) and Encapsulating Security Payload (ESP) protocols. Their differences are as follows: - AH: provides data origin authentication, data integrity check, and anti-replay services. The sender performs the hash algorithm on the IP payload and all header fields of an IP packet except for variable fields to generate a message digest. The receiver recalculates the message digest according to the received IP packet and compares the two message digests to determine whether the IP packet has been modified during transmission. AH does not encrypt the IP payload. It applies to non-confidential data transmission. - ESP: encrypts the IP payload in addition to providing all the functions of AH. ESP can encrypt and authenticate the IP payload but does not protect the IP packet header. It applies to non-confidential data transmission. AH and ESP can be used independently or together. When AH and ESP are used together, ESP encapsulation and then AH encapsulation are performed on an IP packet to be sent, providing higher security.

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