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Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) First Published: December 05, 2012

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Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) First Published: December 05, 2012 Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) First Published: December 05, 2012 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB's public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California. NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS" WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental. Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: http:// www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R) © 2016 Cisco Systems, Inc. All rights reserved. CONTENTS CHAPTER 1 Using Link Layer Discovery Protocol in Multivendor Networks 1 Finding Feature Information 1 Prerequisites for Using Link Layer Discovery Protocol in Multivendor Networks 2 Restrictions for Using Link Layer Discovery Protocol in Multivendor Networks 2 Information About Using Link Layer Discovery Protocol in Multivendor Networks 2 IEEE 802.1ab LLDP 2 LLDP-MED 3 Classes of Endpoints 3 Types of Discovery Supported 4 Benefits of LLDP-MED 5 TLV Elements 5 Benefits of LLDP 6 How to Configure Link Layer Discovery Protocol in Multivendor Networks 6 Enabling and Disabling LLDP Globally 6 Enabling LLDP Globally 6 Disabling and Enabling LLDP on a Supported Interface 7 Disabling LLDP on a Supported Interface 7 Setting LLDP Packet Hold Time 8 Setting LLDP Packet Frequency 9 Monitoring and Maintaining LLDP in Multivendor Networks 10 Enabling and Disabling LLDP TLVs 11 Enabling LLDP TLVs 11 Enabling and Disabling LLDP-MED TLVs 12 Enabling LLDP-MED TLVs 12 Configuration Examples for Link Layer Discovery Protocol in Multivendor Networks 14 Example: Configuring Voice VLAN 14 Example Configuring LLDP on Two Devices 15 Additional References for Using Link Layer Discovery Protocol in Multivendor Networks 17 Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) iii Contents Feature Information for Link Layer Discovery Protocol in Multivendor Networks 18 CHAPTER 2 Configuring IEEE 802.3ad Link Bundling and Load Balancing 21 Finding Feature Information 21 Prerequisites for Configuring IEEE 802.3ad Link Bundling and Load Balancing 22 Restrictions for Configuring IEEE 802.3ad Link Bundling and Load Balancing 22 Information About Configuring IEEE 802.3ad Link Bundling and Load Balancing 22 Gigabit EtherChannel 22 Port Channel and LACP-Enabled Interfaces 23 IEEE 802.3ad Link Bundling 23 Benefits of IEEE 802.3ad Link Bundling 23 EtherChannel Load Balancing 24 Load Distribution in an EtherChannel 24 How to Configure IEEE 802.3ad Link Bundling and Load Balancing 25 Enabling LACP 25 Configuring a Port Channel 26 Setting LACP System Priority 28 Adding and Removing Interfaces from a Bundle 29 Monitoring LACP Status 30 Troubleshooting Tips 30 Configuration Examples for IEEE 802.3ad Link Bundling and Load Balancing 31 Example: Adding and Removing Interfaces from a Bundle 31 Example: Monitoring LACP Status 32 Additional References for IEEE 802.3ad Link Bundling and Load Balancing 33 Feature Information for Configuring IEEE 802.3ad Link Bundling and Load Balancing 34 Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) iv CHAPTER 1 Using Link Layer Discovery Protocol in Multivendor Networks Link Layer Discovery Protocol (LLDP), standardized by the IEEE as part of 802.1ab, enables standardized discovery of nodes, which in turn facilitates future applications of standard management tools such as Simple Network Management Protocol (SNMP) in multivendor networks. Using standard management tools makes physical topology information available and helps network administrators detect and correct network malfunctions and inconsistencies in configuration. Media Endpoint Discovery (MED) is an LLDP enhancement that was formalized by the Telecommunications Industry Association (TIA) for voice over IP (VoIP) applications. The Cisco implementation of LLDP is based on the IEEE 802.1ab standard. This document describes LLDP and LLDP-MED and how they are supported in Cisco software. • Finding Feature Information, page 1 • Prerequisites for Using Link Layer Discovery Protocol in Multivendor Networks, page 2 • Restrictions for Using Link Layer Discovery Protocol in Multivendor Networks, page 2 • Information About Using Link Layer Discovery Protocol in Multivendor Networks, page 2 • How to Configure Link Layer Discovery Protocol in Multivendor Networks, page 6 • Configuration Examples for Link Layer Discovery Protocol in Multivendor Networks, page 14 • Additional References for Using Link Layer Discovery Protocol in Multivendor Networks, page 17 • Feature Information for Link Layer Discovery Protocol in Multivendor Networks, page 18 Finding Feature Information Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table. Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required. Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) 1 Using Link Layer Discovery Protocol in Multivendor Networks Prerequisites for Using Link Layer Discovery Protocol in Multivendor Networks Prerequisites for Using Link Layer Discovery Protocol in Multivendor Networks • Type-Length-Value (TLV) types 0 through 127 • To support LLDP-MED, the following organizationally specific TLVs must be implemented: • Extended Power-via-Media Dependent Interface (MDI) • Inventory • LLDP-MED Capabilities • MAC/PHY Configuration Status • Network Policy • Port VLAN ID Restrictions for Using Link Layer Discovery Protocol in Multivendor Networks • Use of LLDP is limited to 802.1 media types such as Ethernet, Token Ring, and Fiber Distributed Data Interface (FDDI) networks. • The maximum number of neighbor entries per chassis is limited on MED-capable network connectivity devices. Information About Using Link Layer Discovery Protocol in Multivendor Networks IEEE 802.1ab LLDP IEEE 802.1ab Link Layer Discovery Protocol (LLDP) is an optional link layer protocol for network topology discovery in multivendor networks. Discovery information includes device identifiers, port identifiers, versions, and other details. As a protocol that aids network management, LLDP provides accurate network mapping, inventory data, and network troubleshooting information. LLDP is unidirectional, operating only in an advertising mode. LLDP does not solicit information or monitor state changes between LLDP nodes. LLDP periodically sends advertisements to a constrained multicast address. Devices supporting LLDP can send information about themselves while they receive and record information about their neighbors. Additionally, devices can choose to turn off the send or receive functions independently. Advertisements are sent out and received on every active and enabled interface, allowing any device in a network to learn about all devices to which it is connected. Applications that use this information Carrier Ethernet Configuration
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