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CX110 Switch Module V100R001C10 User Guide 10

This document describes the features, installation, removing, and configuration methods of the CX110 GE switch module of the E9000 server.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).


This topic describes the functions, protocols, and ports of the CX110 switch module (CX110).

The CX110 is a switch control unit that provides data switching function for service slots in the system and centrally provides service and management ports for external devices.

The CX110 is installed in a rear slot of the E9000 chassis and connected to compute nodes, storage nodes, management modules through the E9000 midplane. The CX110 performs switching of internal data packets and control management packets to provide high-speed data transmission.

Table 2-1 describes the functions of the CX110.

Table 2-1 GE switching plane function description



Ethernet features


  • Operating modes of full-duplex and auto-negotiation
  • Ethernet ports support: GE, 10GE.
  • 10GE optical ports support passive direct attached cables (DACs).
  • 10GE optical ports support GE multi-mode and single-mode optical modules, support 10GE multi-mode optical modules.
  • GE electrical ports (RJ45) can be connected directly to network cables.
  • Port traffic control

10GE optical interfaces do not support flow control.

  • Jumbo frames
  • Link aggregation
  • Load balancing among links within a trunk
  • Interface isolation and forwarding restrictions
  • Broadcast storm suppression

Virtual Local Area Network (VLAN)

  • Access modes of access, trunk, and hybrid
  • VLAN assignment: port-based, MAC address-based, IP subnet-based VLAN assignment
  • VLAN aggregation
  • Multiplex VLAN (MUX VLAN)
  • Transparent Transmission of Protocol Packets in a VLAN

802.1Q in 802.1Q (QinQ)

  • Basic QinQ
  • Selective QinQ

VLAN Mapping

  • 1 to 1 VLAN mapping
  • 2 to 1 VLAN mapping
  • 2 to 2 VLAN mapping

Media Access Control (MAC)

  • Secure MAC addresses
  • Automatic learning and aging of MAC addresses
  • Static, dynamic, and blackhole MAC address entries
  • Packet filtering based on source MAC addresses
  • Interface-based MAC learning limits

Link Layer Discovery Protocol (LLDP)

Support for LLDP

Virtual Cable Test (VCT)

Support for VCT

Ethernet loop protection

Multiple Spanning Tree Protocol (MSTP)

  • Spanning Tree Protocol (STP)
  • Rapid Spanning Tree Protocol (RSTP)
  • MSTP
  • Bridge protocol data unit (BPDU) protection, root protection, and loop protection
  • Partitioned STP and Layer 2 protocol transparent transmission

IP features

Address Resolution Protocol (ARP)

  • Static and dynamic ARP entries
  • ARP in a VLAN
  • Aging of ARP entries
  • ARP and Reverse Address Resolution Protocol (RARP)
  • ARP proxy
  • Auto-detection


  • IPv4/IPv6 dual-stack
  • Neighbor Discovery (ND)
  • IPv6 over IPv4 Manual Tunnel
  • IPv6 over IPv4 Generic Routing Encapsulation (GRE) Tunnel
  • 6to4 Tunnel

Dynamic Host Configuration Protocol (DHCP)

  • DHCP server
  • DHCP snooping
  • DHCP relay
  • DHCPv6 Relay

IP forwarding

Unicast routing features

  • IPv4/IPv6 static routing
  • Routing Information Protocol version 1 (RIP-1), RIP-2, and RIP next generation (RIPng)
  • Open Shortest Path First (OSPF), including OSPFv2 and OSPFv3
  • Intermediate System to Intermediate System (IS-IS)
  • Border Gateway Protocol 4.0 (BGP4) and Border Gateway Protocol for IPv6 (BGP4+)
  • Routing protocol
  • Policy-based routing
  • Unicast Reverse Path Forwarding (URPF) check

Virtual Private Network (VPN) features

  • Multi-VPN-Instance CE (MCE) and IPv6 MCE
  • GRE Tunnel

Multicast routing features

  • Internet Group Management Protocol version 1/2/3 (IGMPv1/v2/v3)
  • Protocol Independent Multicast - Sparse Mode (PIM-SM) for IPv4 and IPv6
  • Protocol Independent Multicast Source-Specific Multicast (PIM-SSM) for IPv4 and IPv6
  • Multicast Listener Discovery version 1 and 2 (MLDv1 and MLDv2)
  • MLD Source-Specific Multicast (SSM) Mapping
  • Multiprotocol BGP (MBGP)
  • Multicast Source Discovery Protocol (MSDP)
  • Multicast routing policies
  • Reverse Path Forwarding (RPF)
  • Bidirectional PIM (IPv4) and Bidirectional PIM (IPv6)

Device reliability

Bidirectional Forwarding Detection (BFD)

  • BFD (IPv4) and BFD (IPv6)
  • Association between BFD and Eth-Trunk
  • Association between BFD and OSPF
  • Association between BFD and OSPFv3
  • Association between BFD and IS-IS
  • Association between BFD and IS-IS IPv6
  • Association between BFD and BGP
  • Association between BFD and BGP4+
  • Association between BFD and PIM (IPv4)
  • Association between BFD and PIM (IPv6)
  • Association between BFD and static routing (IPv4)
  • Association between BFD and static routing (IPv6)
  • Association between BFD and Virtual Router Redundancy Protocol (VRRP)
  • Association between BFD and VRRP6


  • Virtual Router Redundancy Protocol (VRRP) and VRRP6
  • Device Link Detection Protocol (DLDP)
  • Smart Link
  • Smart Channel
  • Ethernet in the First Mile (EFM), defined in 802.3ah

Layer 2 multicast features

Layer 2 multicast features

  • IGMP snooping
  • IGMP proxy
  • Fast leave
  • Multicast traffic control
  • Multicast VLAN

Quality of Service (QoS) features

Traffic classification

  • Traffic classification based on combination of the L2 protocol header, IP 5-tuple, outbound interface, and 802.1p priority
  • Traffic classification based on the C-VID and C-PRI of QinQ packets

Traffic behavior

  • Access control after traffic classification
  • Traffic policing based on traffic classifiers
  • Re-marking based on the traffic classification result
  • Class-based packet queuing
  • Association between traffic classifiers and traffic behavior (actions)

Queue scheduling

  • Priority queuing (PQ) scheduling
  • Deficit round robin (DRR) scheduling
  • PQ+DRR scheduling
  • Weighted round robin (WRR) scheduling
  • PQ+WRR scheduling

Congestion avoidance

Weighted Random Early Detection (WRED)

Rate limiting on outbound interfaces

Rate limiting on outbound interfaces


Many-to-one virtualization

  • Intelligent Stack (iStack)
  • Stack split and merge
  • Dual-active detection
  • Version and configuration synchronization

Data center features

Transparent Interconnection of Lots of Links (TRILL)

  • TRILL features
  • TRILL Non-Stop Routing (NSR)
  • TRILL Equal-Cost Multi-Path (ECMP)
  • IGMP over TRILL
  • TRILL multi-homing active-active

VM detection

  • Virtual awareness
  • Automatic policy deployment
  • Automatic policy migration
  • NLB server cluster
    • Association between virtual IP addresses of NLBs and multicast MAC addresses
    • Association between one multicast MAC address and multiple outbound interfaces

Forwarding mode based on Virtual Ethernet Port Aggregator (VEPA)

Forwarding mode based on VEPA

Configuration and maintenance

Terminal service

  • Configuration using command lines
  • Error messages and online help in English and Chinese
  • Login through console and Telnet terminals
  • Send function and data communications between terminal users

File system

  • Directory and file management
  • File upload and download using File Transfer Protocol (FTP), Trivial File Transfer Protocol (TFTP) and Secure File Transfer Protocol (SFTP)

Debugging and maintenance

  • Unified management of logs, alarms, and debugging information
  • Electronic labels
  • User operation logs
  • Detailed debugging information for network fault diagnosis
  • Network test tools such as tracert and ping commands
  • Port mirroring and traffic mirroring

Version upgrade

  • Device software loading and in-service software loading
  • In-service upgrade using the basic input/output system (BIOS) menu
  • In-service patching

To ensure secure service application, periodically upgrade the switch module software version.

Security and management

System security

  • Hierarchical command-line protection based on user levels, preventing unauthorized users from using commands to access switch modules
  • Secure Shell (SSH)
  • Remote Authentication Dial-In User Service (RADIUS) authentication over IPv4 or IPv6 for login users
  • Huawei Terminal Access Controller Access Control System (HWTACACS) authentication over IPv4 or IPv6 for login users
  • Access control list (ACL) filtering
  • Dynamic ARP inspection (DAI)
  • DHCP packet filtering (appending the Option 82 field)
  • Defense against control packet attacks
  • Defense against attacks of source address spoofing, LAND, SYN flood (TCP SYN), smurf, ping flood (Internet Control Message Protocol Echo), teardrop, and ping of death
  • Logs about attacking MAC addresses

Network management

  • Internet Control Message Protocol (ICMP)-based ping and tracert
  • Simple Network Management Protocol version 1/2c/3 (SNMPv1/v2c/v3)
  • Standard management information base (MIB)
  • Remote network monitoring (RMON)
  • NetStream, with output statistics packets in the V5, V8, or V9 format
  • sFlow
  • Network quality analysis(NQR)
Updated: 2019-08-09

Document ID: EDOC1000068625

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