Brocade Communications Systems 7800 Manual de usuario

IBM System z Long Distance Extension and FCIP Network Primer Dr. Steve Guendert Brocade Communications Wednesday 12 March 2014 130PM Session Numb

FCIP Overview • Fibre Channel over IP (FCIP) enables customers to use their IP wide area network (WAN) infrastructure to connect Fibre Channel SANs wh

The role TCP plays in FCIP • Viewed from the IP Network perspective, FCIP entities are peers and communicate using TCP/IP. • TCP/IP is used as the un

FCIP Tunnels and Protocol Stack • Before a FC frame is sent out via FCIP, the transmitting FCIP port encapsulates the FC frame within the four protoco

FC over IP (FCIP) Fibre Channel to Ethernet and Back Again 13 Data SCSI / CCW FC layer 0-2 FC 0-2 FCIP TCP IP L2 PHY IP L2 PHY TCP IP L2 PHY FC 0-2

• With Brocade, FC frames are encapsulated within IP packets • A compressed, FICON batch (many frames) is encapsulated per IP frame • Receiver r

Brocade FCIP Hardware Components Resilient, synergistic networks DCX 8510 Gen5 FICON/FCP Directors MLX Series High-Performance, Multiservice Routers F

Brocade FCIP Devices 7800 switch and FX8-24 blade • Internal to 7800 and FX8-24 there are Brocade ASICs (Application-Specific Integrated Circuits) tha

Brocade FCIP 7800 Considerations • Logical Virtual Expansion Ports (VE_Ports) are really E_Ports on the Condor2 (C2) ASIC that are FCIP facing. • A 7

Brocade FCIP FX8-24 Blade Considerations • An FX8-24 blade supports up to 20 VE_Ports,

FCIP Batches A Brocade Exclusive Capability • The Brocade 7800 and FX8-24 use batching to improve overall efficiency, maintain full utilization of lin

Abstract • This session will discuss Fibre Channel over IP (FCIP) networking for IBM System z environments. We will discuss basics, such as tunnels, c

• Up to 4 FC frames in a FICON batch  4 FICON frames get 1 FCIP header and they form a string of bytes that is then placed in TCP segments up to the

FCIP Circuits • FCIP Circuits are the building blocks for FCIP Tunnels and FCIP Trunking • An FCIP Circuit consists of a source and destination IP add

FCIP Tunnels and Protocol Stack • Once a TCP connection is established between FCIP entities, a Tunnel is established: • The two platforms (blade or

System z 7800 MLX IP Ports DCX with FX8-24 Blade Storage Array FC Ports IP Ports IP Port FC Port FICON or FCP FICON or FCP FCIP Tunnel Ethernet FCIP

FC and FCIP Connectivity Overview • Fibre Channel Inter-Switch Links (ISLs) and FCIP Tunnels both provide the capability to connect switching devices

Components of FC and FCIP Connectivity 25 IP Network FCIP ISL: DLS IP Address(s) Tunnel Logical Connection IP Address(s) Tunnel DLS Logical Connectio

FCIP trunking, metrics/failover, and lossless link loss 26 Disaster Recovery Business Continuance Business Continuance Local Backup Remote Remote

FCIP Trunking • FCIP Trunking is an FCIP Tunnel with more than 1 circuit • Also known as a Link Aggregation Group (LAG) or port channel • FCIP Trunki

FCIP Trunking – (e.g. 4 Circuits within 1 Tunnel) • Unique to Brocade • Patent Pending! 28 Class-F high med low Circuit 0 GE0 Class-F high med low Cir

VE_Port to VE_Port (Dedicated Ethernet Ports) 29 VE_Port 16 FCIP Trunk1 Logical Source IP Interfaces Logical Destination IP Interfaces Physical Ether

Agenda • Basics-standards/protocol, tunneling , circuits, batching • The role TCP plays with FCIP • FCIP trunking, metrics/failover, and lossless link

• Purchase/Install the optional FCIP Trunking licensed feature • Will enable the creation of logical high-bandwidth FCIP tunnels (aka “FCIP Trunks”) c

FX8-24 7800 FX8-24 7800 FCIP Trunks also overcome physical link failures Supervisor TCP Session •FCIP Trunk appears as a single logical ISL •Encapsul

FCIP Trunking FCIP Circuit Keep Alive Timers1 • The FCIP Circuit Keep Alive timeout has a FOS default value of 10,000ms (10 seconds) • For FICON the

Controlling Traffic flow in a Trunk Path Costing Technique • All circuits have a metric of 0 or 1 – Purpose is to control which circuit should be prim

FICON protocol emulation: improved long distance performance 34 Disaster Recovery Business Continuance Business Continuance Local Backup Remote Remo

• FCIP with or without Trunking: – In shuttle mode, the FCIP long distance link is treated as any other ISL link • All types of data streams can run c

M/EOS PDCM prohibits, Virtual Fabrics, etc. not needed. IP MF z/OS FICON FICON Tape 7800 7800 • Multiple device types can be extended over the same FI

Brocade Innovation for FICON Extension FICON Advanced Accelerator for FICON • A licensed function of an FX8-24 blade and/or 7800 extension switch • C

Protocol Optimization Consideration • Mainframe users rely upon z/OS services such as path group to maintain load balancing and to provide a “stateful

Brocade Write Tape Pipelining for FICON FICON Based Tape and Virtual Tape Extension IP  Tape Write Pipelining basically uses the cache in the remote

FCIP Basics: Standards, Protocol, Tunneling, Circuits and Batching © 2010-2013 Brocade Communications Systems, Inc. Company Proprietary Information 4

Brocade Read Tape Pipelining for FICON FICON Based Tape and Virtual Tape Extension IP  Tape Read Pipelining basically uses the cache in the remote e

• IBM z/OS Global Mirror (formerly XRC) data replication is performed by pulling information from a primary DASD via System Data Mover (SDM) -- remote

• Auto-detection of Teradata, XRC (Storage Array) and Tape devices for emulation • Control block structures are dynamically allocated so that the devi

• Commands, data, and acknowledgments all need to use the same FICON path in both switching devices for each end of the connection – Cannot traverse o

• Multiple FCIP tunnels are not supported between pairs of 7800 switches or FX8-24 blades with any of the FICON or FCP emulation/acceleration features

Can be used independently IPSEC (this is encryption) • Internet Protocol Security (IPsec) is a protocol for securing Internet

Summary and Conclusions • FCIP provides a robust DR/BC network solution for a variety of distances. • FCIP is ideal for both open systems, as well as

47 Questions?

FCIP Long Distance Cascading • Distance Extension for Thousands of Miles of Connectivity • Fibre Channel over IP (FCIP) enables interconnection of tw

FCIP use cases • Mainframe FCIP supports remote data replication (RDR), global mirror z/OS (zGM or XRC), Geographically Dispersed Parallel Sysplex (GD

Why Fibre Channel over IP? • Why FCIP instead of extended native FC? • Cost of IP bandwidth vs. FC bandwidth • Eliminate distance constraints • Levera

Standards and FCIP • Fibre Channel over TCP/IP (FCIP) is IETF RFC 3821 • July 2004 • Relevant Fibre Channel standards include, but are not limited to:

FCIP Overview • Fibre Channel over IP is a mechanism that allows mainframe FICON as well as SAN islands and ports to be interconnected over IP network