Cisco - Catalyst 8500 Configuration Guidelines 1106

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© 1999, Cisco Systems, Inc.

Catalyst 8500 Configuration and Guidelines Session 1106

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Agenda Catalyst 8500 Hardware • Components and Options • Architectural Overview • Packet Flows • Deployment Options 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Agenda Software • Feature Sets • CPU Software Interaction CPU bound traffic Control plane vs. data plane access-lists

• IDBs, BVIs, VLAN Interfaces, QOS • Miscellaneous Tips 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Agenda Catalyst 8500 Hardware • Components and Options • Architectural Overview • A “Day in the Life of a Packet” • Deployment Options

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© 1999, Cisco Systems, Inc.

Catalyst 8510 Power Supply 1

Power Supply 2

Interface Slot 1 F A N T R A Y

Interface Slot 2 Switch Route Processor Interface Slot 3 Interface Slot 4

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 8540

F A N T R A Y

Interface Slot 0 Interface Slot 1 Interface Slot 2 Interface Slot 3 Primary Route Processor Slot 4 Primary Route Processor Slot 5 Redundant Switch Processor Slot 6 Primary Route Processor Slot 7 Redundant Switch Processor Slot 8 Interface Slot 9 Interface Slot 10 Interface Slot 11 Interface Slot 12 Power Supply 1

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Power Supply 2

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© 1999, Cisco Systems, Inc.

Catalyst 85xx Components

• Chassis • Power supply • CPU / switch card options • Memory • Interface modules 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 8500 Chassis • Catalyst 8510—five slots • Catalyst 8540—thirteen slots • Catalyst 8510 SRP -> slot 13 / C5500 • 8510 interface modules -> slot 9–12 • Same footprint as catalyst 5000/5500

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© 1999, Cisco Systems, Inc.

Catalyst 85xx Power Supply • Single AC, DC • Dual AC, DC (load-sharing and redundant) • No mixed AC and DC on same chassis • 8510—same P/S as catalyst 5000/5505 and LS1010 • 8540—20 amp service 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 85xx SRP,RP CPU • 8510 CPU—RSP-2 based R4600 RISC processor at 100 MHz Software path to CPU

• 8540 CPU—RSP-4 based R5000 RISC processor at 200 MHz Hardware path to CPU

• Both CPUs support console, AUX, Ethernet for out of band management 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst 85xx Memory • DRAM fixed: 64MB 8510, 256MB 8540 • Flash: 4MB • Flash memory card: 8, 16, 20MB, and Flash disk • Two PCMCIA slots • DRAM used for local storage and routing table, Flash primarily used for image storage 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 85xx Interface Modules L3 LAN Interfaces Catalyst 8510 • 8 port 10/100 TX • 8 port 100 FX—SC • 1 port GE with GBIC Catalyst 8540 • 16 port 10/100 TX • 16 port 100 FX—MTRJ NOTE: need adapter cables! • 2 port GE with GBIC 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst 85xx Interface Modules ATM • 16-port OC-3c line card MMF with mini-MT connectors

• 4-port OC-12c line card SMF-IR and MMF with SC connectors

• 1-port OC-48c line card SMF with SC connectors

• OC-3c

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MMF/SMF 3 x MMF + 1 x SMF UTP-5 SMF LR 14

© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 85xx Interface Modules ATM • OC-12c

MMF/SMF SMF LR

• DS3 ATM

Coaxial

• E3 ATM

Coaxial

• T1/E1 ATM

TP—RJ-48 and coaxial for E1

• T1/E1 CES 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Agenda Catalyst 8500 Hardware • Components and Options • Architectural Overview • Packet Flows • Deployment Options

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 8500 Layer 3 High-Level Overview Switch Route Processor

Central Switching Table 00-0e1-00-00-00-00 2/3

Line Card Switching Table Line Card Switching Table

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10 / 40 Gbps Shared Memory Fabric

SSii

SSii

SSii

SSii

Line Card Switching Table Line Card Switching Table

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© 1999, Cisco Systems, Inc.

Catalyst 8500 ATM High-Level Overview Route Processor

Line Card

Line Card

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IISP PNNI

10 / 40 Gbps Shared Memory Fabric

SVC/PVC

Line Card

Line Card

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 8500 Route Processor Master FIB Table

Routing Table

R4x00 Adjacency Table Route Processor

Catalyst 8500 Ports

• RP processes all control traffic: RIP, OSPF, (E)IGRP, PIM, PNNI, IISP, layer 2 VLAN and spanning tree information • Computes routing table and populates FIB table; downloads FIB to line cards • Creates ATM SVCs and PVCs • Connects to all ports for management information 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Shared Memory 1.25 (8510) / 2.5 (8540) Gbps Half Duplex per Slot

10/40 Gbps Shared Memory Fabric 1.25/ 2.5 Gbps to Slot 0

1.25/ 2.5 Gbps to Slot 3

1.25/ 2.5 Gbps to Slot 1

1.25/ 2.5 Gbps to Slot 4, 7

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Line Cards support FIB-Based Switching Route Processor/

Forwarding Information Base 00-0e1-00-00-00-00 2/3

Frame Packet Network 132.86.39.0

1 Routing Table

2

Network 146.125.3.64 Frame

Packet

3

Adjacency Table 00-0e1-00-00-00-00 2/3

Line Cards

1 Forwarding Information Base (FIB) computed based on

routing table contents 2 Each FIB entry has one entry in Adjacency Table (AT) 3 Both FIB and AT synchronized to line cards 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

FIB and Adjacency Tables

• FIB contains the next hop for a route, populated by routing updates • AT contains Mac address for adjacent routers and hosts • AT maps layer 2 to layer 3 addresses • AT is populated by ARP(IP),GNS (IPX), neighbors gleaned from routing updates (IP and IPX) 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Agenda Catalyst 8500 Hardware • Components and Options • Architectural Overview • Packet Flows • Deployment Options

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© 1999, Cisco Systems, Inc.

Catalyst 8500 Packet Flow: Layer 3 FIB Table A3 B C1 B

Fast E-net 0/1 Fast E-net 3/6 Fast E-net 5/8 ï

Routing Table

ï ï

R4600 Adjacency Table MAC Address 3215.2511.AFFC 0001.2345.6789 3005.6798.AA05

Output Interface Ethernet 1/1 Serial 1/1 Serial 1/2

Switch Route Processor

Slave FIB Adjacency Table Table CEF ASIC Catalyst 8510 Line Card

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10/40 Gbps Shared Memory Fabric Queue-0 Queue-1 Queue-2 Queue-3

Slave FIB Adjacency Table Table CEF ASIC Catalyst 8500 Line Card

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 8500 ATM Cell Flow Route Processor

Line Card

Line Card

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IISP PNNI OAM

10 / 40 Gbps Shared Memory Fabric

SVC/PVC

Line Card

Line Card

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© 1999, Cisco Systems, Inc.

Agenda Catalyst 8500 Hardware • Components and Options • Architectural Overview • Packet Flows • Deployment Options

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 8500 Deployment Options • Campus Switch Router (CSR) • Multi-Service Switch Router (MSR) • Deployment options based on CPU, Switch Card assemblies and Cisco IOS software image • MSR Interworking via ATM Route Module (ARM) 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

L3 Interface Module Memory Options Master FIB Table

Routing Table

R4x00 Adjacency Table Switch Route Processor

Slave FIB Table

Adjacency Table

10 / 40 Gbps Shared Memory Fabric

FIB/ Adjacency Tables Can Be 16K or 64K Addresses

Slave FIB Table

Adjacency Table

CEF ASIC

CEF ASIC

Catalyst 8500 Line Card

Catalyst 8500 Line Card

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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FIB/Adjacency Table Sizing • Usable range is 14K or 62K due to table overhead • IP efficiency ranges from 50% to 67% 64K line card = 31,000 to 41,540 max IP routes 16K line card = 7,000 to 9,380 max IP routes

• IPX and Bridging entries are 100% efficient • 256K route cards are in development and will be 100% efficient 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Agenda Software • Feature Sets • CPU Software Interaction CPU bound traffic Control plane vs. data plane access-lists

• IDBs, EtherChannel, BVIs, VLAN Interfaces, QOS • Miscellaneous Tips 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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Catalyst 8500 Feature Sets Layer 3 • IP routing (12.0) is the default image Includes all IP routing protocols except interdomain routing

• IPX, AppleTalk feature license • Interdomain feature license • DECnet, VINES (future) ATM • IISP, PNNI • HPNNI • TAG 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Agenda Software • Feature Sets • CPU Software Interaction CPU bound traffic Control plane vs. data plane access-lists

• IDBs, EtherChannel, BVIs, VLAN Interfaces, QOS • Miscellaneous Tips 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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CPU Traffic • For IP, packets are sent to the RP in the following situations Packets matching the router’s own IP address No route found on the line card and “ICMP unreachable” is enabled Packets with TTL = 0 after TTL decrement Packets with options Packets in/out on the same i/f and ICMP redirect is on ARP packets Certain multicast/broadcast packets (e.g. OSFP route updates) 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

CPU Traffic • For IPX, packets are sent to the RP in the following situations Packets matching the router’s own IPX address Packets with TTL > 16 after TTL increment GNS packets Certain broadcast packets (e.g. RIP/EIGRP/SAP route updates) 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Catalyst Systems Confidential

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CPU Traffic

• For ATM, cells are sent to the RP in the following situations Cells matching the router’s own ATM address Signaling and control traffic ( IISP, PNNI ) OAM cells 1106 1034_05F9_c1

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© 1999, Cisco Systems, Inc.

Network Sizing Guidelines 8510 EIGRP—