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11-3
System Management Software Configuration Guide for Cisco IE 2000U and Connected Grid Switches
Chapter 11 Configuring SPAN and RSPAN
Information About SPAN and RSPAN
Figure 11-2 Example of RSPAN Configuration
SPAN and RSPAN Concepts and Terminology
This section describes concepts and terminology associated with SPAN and RSPAN configuration.
SPAN Sessions
SPAN sessions (local or remote) allow you to monitor traffic on one or more ports, or one or more
VLANs, and send the monitored traffic to one or more destination ports.
A local SPAN session is an association of a destination port with source ports or source VLANs, all on
a single network device. Local SPAN does not have separate source and destination sessions. Local
SPAN sessions gather a set of ingress and egress packets specified by the user and form them into a
stream of SPAN data, which is directed to the destination port.
RSPAN consists of at least one RSPAN source session, an RSPAN VLAN, and at least one RSPAN
destination session. You separately configure RSPAN source sessions and RSPAN destination sessions
on different network devices. To configure an RSPAN source session on a device, you associate a set of
source ports or source VLANs with an RSPAN VLAN. The output of this session is the stream of SPAN
packets that are sent to the RSPAN VLAN. To configure an RSPAN destination session on another
device, you associate the destination port with the RSPAN VLAN. The destination session collects all
RSPAN VLAN traffic and sends it out the RSPAN destination port.
RSPAN
VLAN
RSPAN
source ports
RSPAN
source ports
RSPAN
destination ports
RSPAN
source
session B
Intermediate switches
must support RSPAN VLAN
Switch B
RSPAN
destination
session
Switch C
RSPAN
source
session A
Switch A
101366
- System Management Software 1
- CONTENTS 3
- 10 Configuring CDP 10-1 8
- 12 Configuring RMON 12-1 10
- 14 Configuring SNMP 14-1 11
- Contents 12
- A Supported MIBs A-1 14
- Overview 15
- Chapter 1 Overview 16
- Features 16
- Switch Boot Optimization 17
- MAC Address Table 17
- Switch Alarms 18
- SDM Templates 18
- Smartports Macros 18
- LLDP and LLDP-MED 19
- Port-Based Traffic Control 19
- SPAN and RSPAN 20
- System Message Logging 20
- Cisco IOS IP SLAs 21
- Embedded Event Manager 21
- Ethernet OAM, CFM, and E-LMI 22
- Online Diagnostics 22
- Supported MIBs 22
- Boot Process 24
- DHCP-Based Autoconfiguration 25
- DHCP Image Upgrade 26
- TFTP Server 27
- DNS Server 27
- Relay Device 28
- Obtaining Configuration Files 28
- Example Configuration 29
- Assigning Switch Information 33
- Configuring the Client 36
- Booting Manually 40
- First Reload 49
- Administering the Switch 53
- System Clock 54
- Network Time Protocol 54
- Configuring NTP 59
- Configuring NTP Associations 60
- Setting the System Clock 67
- Configuring DNS 72
- Creating a Banner 73
- Configuring a Login Banner 75
- MOTD Banner 88
- Configuring the Switch Alarms 91
- Port Status Monitoring Alarms 92
- Triggering Alarm Options 93
- Configuring External Alarms 94
- Configuring Switch Alarms 97
- Configuring Alarm Profiles 99
- BEFORE YOU BEGIN 100
- DETAILED STEPS 100
- Verifying Configuration 102
- Configuration Example 102
- Related Documents 104
- Feature History 104
- Configuring SDM Templates 105
- • Indirect IPv4 routes – 4 K 106
- Prerequisites 107
- Guidelines and Limitations 108
- Default Settings 108
- Configuring Smartports Macros 113
- Creating Smartports Macros 116
- Applying Smartports Macros 117
- Configuring LLDP and LLDP-MED 121
- LLDP-MED 122
- Disabling LLDP 125
- Enabling LLDP 125
- Configuring LLDP-MED TLVs 127
- Disabling a TLV 128
- Enabling a TLV 128
- Storm Control 134
- Protected Ports 135
- Port Blocking 135
- Port Security 135
- Secure MAC Addresses 136
- Security Violations 136
- Configuring Storm Control 140
- Configuring Protected Ports 142
- Configuring Port Blocking 143
- Configuring Port Security 144
- Configuring CDP 155
- Disabling and Enabling CDP 157
- Enabling CDP 158
- Disabling CDP on an Interface 158
- Enabling CDP on an Interface 159
- Configuring SPAN and RSPAN 163
- Local SPAN 164
- Remote SPAN 164
- SPAN Sessions 165
- Monitored Traffic 166
- Source Ports 167
- Source VLANs 168
- VLAN Filtering 168
- Destination Port 168
- RSPAN VLAN 169
- OL-29255-03 174
- Specifying VLANs to Filter 178
- Configuring RSPAN 179
- Configuring RMON 191
- System Log Message Format 200
- Disabling Message Logging 202
- Synchronizing Log Messages 204
- Verifying the Configuration 214
- Configuring SNMP 217
- SNMP Versions 218
- SNMP Manager Functions 219
- SNMP Agent Functions 220
- SNMP Community Strings 220
- SNMP Notifications 221
- Table 14-3 ifIndex Values 222
- Configuring Community Strings 225
- Event Detectors 244
- CFM Domain 260
- CFM Messages 263
- SNMP Traps and Fault Alarms 263
- Configuration Error List 263
- CFM Version Interoperability 264
- IP SLAs Support for CFM 264
- Configuring Ethernet CFM 265
- Configuring the CFM Domain 266
- Configuring Static Remote MEP 271
- Configuring a Port MEP 273
- Configuring SNMP Traps 275
- Configuring Fault Alarms 275
- Y.1731 Terminology 282
- Alarm Indication Signals 283
- Ethernet Locked Signal 284
- Multicast Ethernet Loopback 284
- Default Y.1731 Configuration 285
- Configuring ETH-AIS 285
- Configuring ETH-LCK 287
- Hold-time: 100 Minutes 292
- Configuring Ethernet OAM 293
- Enabling Ethernet Loopback 305
- Information About E-LMI 309
- Configuring E-LMI 310
- Configuring the OAM Manager 311
- Enabling E-LMI 314
- Enabling Ethernet OAM 319
- Scheduling Online Diagnostics 325
- Chapter A Supported MIBs 334
- MIB List 334
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