H3C S7500 Series switch is a new generation switch released by H3C. It supports a new chassis, powerful new super engines - the Salience^TM III series, and new interface boards with abundant services. Especially, switch and route processor of S7502 is integrated in interface modules without special engines. The H3C S7500 Series switch can provide many kinds of high density and wire-speed FE, GE and 10GE interface modules and can be flexibly configured based on network requirement.

The most important is that the new generation S7500 switches are much cost effective: lower price, higher performance and more features, including:

Advanced System Structure

The H3C S7500 Series introduces the distributed system architecture and powerful ASIC chips for high-speed routing, as well the Crossbar technologies for packet switching. This creative combination greatly improves the forwarding performance and expansion capabilities of the routing switch. Embedded in the Main Control Units (MCU), the Crossbar switching fabric provides a switching capacity up to 768Gbps and works in the active/standby or load-sharing mode set by simple software configuration.

High Capacity, High Density, Wire-Speed Forwarding

High Capacity----The H3C S7500 Series can provide 1.68Tbps backplane bandwidth and up to 768Gbps switching capacity and 432Mpps forwarding capabilities with Salience^TM III Plus engine.

High Density----The H3C S7500 Series can support ultimate 288 GE or 288 FE or 24 10-Gigabit wire-speed Ethernet interfaces totally.

Wire-Speed Forwarding----All the high density Gigabit (48-port) and 10-Gigabit (4-port) interface modules with XGBUS uplink can reach to L2/L3 wire-speed distributed forwarding in full loaded of S7503 or S7506R with new Salience^TM III Plus engine.

Simply put, the H3C S7500 Series provides flexible interface choices from 10/100/1000 to 10 Gigabit Ethernet and combined interface boards to satisfy the customer’s requirements for high density, high throughput and wire-speed forwarding.

Figure 2 H3C S7500 Series Super Engines

10 Gigabit Wire-speed Interfaces Support

The new generation 10-Gigabit Ethernet provided by the S7500 Series has overcome the limitations of the early 10-Gigabit Ethernet.

It provides up to four wire-speed 10-Gigabit ports per line card in fully loaded chassis with the new super engine - Salience^TM III Plus.

It provides ultimate to 12 wire-speed 10-Gigabit ports in the S7503 and 24 wire-speed 10-Gigabit ports in the S7506R.

It supports QoS-ensured forwarding at wire speed as well as abundant ACLs, policy routing, and security features.

Carrier-class Reliability Design

The H3C S7500 Series adopts an industry-leading distributed processing structure.

The H3C S7506R supports dual Main Control Units and all boards of the S7500 Series are hot-swappable.

The power system uses N+1 redundancy hot-backup

The H3C S7500 Series switch supports STP/RSTP/MSTP and VRRP, which can meet rigorous carrier-class reliability requirements.

The H3C S7500 Series switch supports cost-effective ring technology -- RRPP, which can offer sub-second recovery from link failure in spite of numbers of nodes in the ring.

The H3C S7500 Series switch deploys Salience^TM III series engines with maximum switching capacity 768Gbps, with throughput as much as 432Mpps, while the backplane capacity reach 1.68Tbps.

Hardware-based Intelligent Service

The Versatile Network Processing(VSNP) Service Interface Module of H3C S7500 series for Salience^TM III and Salience^TM III Plus provides enhanced features. It adds Layer 3 routing table and supports advanced hardware-based Network Address Translation (NAT) and NetStream as well as policy-based routing (PBR) features.

Network Address Translation----The H3C S7500 series can support 32 IP pools and ultimately 8,000 IP address. The Network Address Port Translation (NAPT) enables the mapping of multiple internal addresses to the same public address, thereby enabling multiple internal hosts be able to access external networks simultaneously. The Easy IP feature will ideal when only one public IP address is available or there are a limited number of internal hosts. It can protect equipments against TCP SYN and UDP port-scan attack.

NetStream----The VSNP Interface Module supports flow-based statistics monitoring. Data can be exported, collected and analyzed for network-traffic accounting, network monitoring, security alarming and network planning. It can support up to 300,000 stream statistics entries per board. Supposed 64 bytes per packet and single direction, the throughput will reach to 3.8Gbps and the forwarding rate is 5.7Mpps.

Policy Based Routing----The VSNP Service Interface Module introduces Network Processor (NP) to guarantee wire-speed forwarding while PBR is configured. It can implement logical usage of bandwidth, link backup and traffic marks. Supposed 64 bytes per packet, the throughput will reach to 3Gbps and the forwarding rate is 4.5Mpps.

Smoothly Upgrade and Backward Compatibility of LPU

Newly released, the S7500 series currently has 4 models, 3 engines, and dozens of interface boards available. All are based on advanced architecture and can perform from access to aggregation and the core layer.

With multiple high speed GEBUS and XGBUS between Main Control Units and interface modules, smooth network upgrade is guaranteed from FE to GE and 10GE. As a result, TCO (Total Cost of Ownership) for customers is protected, and more choices are available for customers.

Complete Security Mechanism

The H3C S7500 series deploys the sophisticated 802.1x mode for access user authentication.

Guest VLAN allows unauthenticated users to access more resources, without installing 802.1x client, or the user upgrades 802.1x client without authentication.

Dynamic VLAN with RADIUS server implements the purpose of controlling the network resources that the users can access.

HWTACACS or RADIUS authentication or local server enables centralized access control of switches and limits unauthorized users to modify the configurations.

DHCP Security can be used to prevent illegal user from accessing network by binding IP and MAC address on the switch itself.

DHCP snooping supports to record end users IP and MAC address, and DHCP snooping trust port can filter out DHCP reply packets from illegal DHCP server on untrustworthy port.

DHCP option 82 can help service providers to trace where the end user comes from.

The H3C S7500 series also support Secure Shell (SSH) protocol version 2, secure SNMPv3 NM protocol and MD5 encrypted authentication of OSPFv2, RIPv2 and BGPv4 packets.

Salience^TM III Super Engine of the H3C S7500 series offers superior per-port QoS features to help ensure that network traffic is classified, prioritized, and scheduled optimally to efficiently handle bandwidth-hungry multimedia, time-sensitive (voice), and mission-critical applications. Salience^TM III Super Engine can classify, police, and mark incoming packets, allowing the administrator to differentiate between traffic flows and enforce policies. Sharing, shaping, and strict-priority configurations determine scheduling of egress traffic. Bandwidth control granularity is up to 64 Kbps.

Adopting the advanced system ASIC chip design, the longest routing prefix mode and the packet-by-packet forwarding mode, the H3C S7500 series can effectively combat network viruses like Worm. Blaster, Red Code, etc.

Excellent Power Over Ethernet (PoE) Solution

S7500 series switch supports IEEE 802.3af standard PoE as PSE(Power-sourcing Equipment) on 10/100BASE-TX or 10/100/1000 BASE-T ports.

All new PoE line cards of S7500 series switch can support up to 48 simultaneous full-powered PoE port per slot at 15.4w. It also supports intelligent power management and delivers necessary power to PD (Powered Device). It could provide up to 2400W power supply with N+1 redundancy.

In the network construction, it could provide power directly to any IEEE 802.3af-compliant end device to limit the number of point failure, such as WLAN Access Point device or IP Phone which enables Voice VLAN applications.

With PoE and Voice VLAN technology, these innovative switches can provide the perfect solution for a converged voice and data network.

EPON Solution

The H3C S7500 has launched Gigabit EPON series product based on IEEE 802.3ah standard. EPON series product includes Optical Line Terminal (OLT), Optical Network Unit (ONU) and Passive optical splitter (POS). It has abundant L2/L3 switching features and can be applied to an all FTTH and FTTB solution. EPON series product has unique advantages, such as OAM, dynamic bandwidth assignment from 1Mbps to 1Gbps, and flexibly installed ONU. Those features simplify administration and maintenance of network, lower the cost of network ownership and economize the fiber resources.

The H3C S7500 can provide 44 Gigabit EPON interfaces at most and the maximum split ratio of POS is 1:32, so the whole chassis can access 1408 ONU. The transmission distance of EPON can be up to 20km.

Abundant System Maintenance and Debugging Methods

The H3C S7500 Series support System log, Hierarchical alarm management and alarm filtering, Detailed alarm/debug information output, Ping and Tracer, they also support remote maintenance via Telnet Modems and SSH.

The H3C S7500 Series support HWPING, a new network diagnostic tool used to test the performance of protocols operating on network and an enhanced alternative to the ping command.

The H3C S7500 Series support DLDP (Device Link Detection Protocol), DLDP can detect the link status of the optical fiber cable or copper twisted pair. If DLDP finds a unidirectional link, it disables the related port automatically or informs users to disable it manually depending on specific configuration, to avoid potential network problems.

The H3C S7500 Series support Loopback detection on ports, after users enable Loopback detection for Ethernet ports, the switch will monitor whether the ports have Loopback on a regular basis; if the switch detects Loopback for a particular port, it will put that port under control.

S7502 Main Control Unit includes LS8M1T12PEH, LS8M1P12TEH and all interface modules with XGBUS uplink. All GEBUS uplink interface modules only cooperate with LS8M1T12PEH or LS8M1P12TEH, and XGBUS uplink interface modules must be selected when S7502 Main Control Unit is XGBUS uplink.

To support distributed forwarding, SRPU must be SalienceTM III or SalienceTM III Plus. It only supports distributed forwarding between interface modules with XGBUS uplink.

In this condition, S7506R should support load-balance.

The optical interfaces on LS8M1T12PEH, LS8M1P12TEH, LS8M1GP8UBH, LS8M1GP48H-XG, LS8M1T16PH-XG, LS8M1T32PH-XG, LS8M1TGX2H-XG, LS8M1TGX4H-XG, SalienceTM III Edge and SalienceTM III can support RRPP currently, and the hardware CPLD version must be 005 or later.

EPON: Ethernet Passive Optical Network

FTTH: Fiber To The Home

FTTB: Fiber To The Building

OAM: Operation, administration and maintenance