glbp ip
To activate the Gateway Load Balancing Protocol (GLBP), use the
glbp ip
command in interface configuration
mode. To disable GLBP, use the
no
form of this command.
glbp group ip
[
ip-address [secondary]
]
no glbp group ip
[
ip-address [secondary]
]
Syntax Description
GLBP group number in the range from 0 to 1023.
group
(Optional) Virtual IP address for the GLBP group.
The IP address must be in the same subnet as the
interface IP address.
ip-address
(Optional) Indicates that the IP address is a secondary
GLBP virtual address.
secondary
Command Default
GLBP is disabled by default.
Command Modes
Interface configuration (config-if)
Command History
Modification
Release
This command was introduced.
Cisco IOS XE Release 2.1
Usage Guidelines
The
glbp ip
command activates GLBP on the configured interface. If an IP address is specified, that address
is used as the designated virtual IP address for the GLBP group. If no IP address is specified, the designated
address is learned from another device configured to be in the same GLBP group. For GLBP to elect an active
virtual gateway (AVG), at least one device on the cable must have been configured with the designated address.
A device must be configured with, or have learned, the virtual IP address of the GLBP group before assuming
the role of a GLBP gateway or forwarder. Configuring the designated address on the AVG always overrides
a designated address that is in use.
When the
glbp ip
command is enabled on an interface, the handling of proxy Address Resolution Protocol
(ARP) requests is changed (unless proxy ARP was disabled). ARP requests are sent by hosts to map an IP
address to a MAC address. The GLBP gateway intercepts the ARP requests and replies to the ARP on behalf
of the connected nodes. If a forwarder in the GLBP group is active, proxy ARP requests are answered using
the MAC address of the first active forwarder in the group. If no forwarder is active, proxy ARP responses
are suppressed.
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
152
glbp ip
Summary of Contents for Catalyst 3650 Series
Page 2: ... 2017 Cisco Systems Inc All rights reserved ...
Page 37: ...P A R T I Campus Fabric Campus Fabric page 13 ...
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Page 51: ...P A R T II Interface and Hardware Components Interface and Hardware Commands page 27 ...
Page 52: ......
Page 165: ...P A R T III IP IP page 141 ...
Page 166: ......
Page 235: ...P A R T IV IP Multicast Routing IP Multicast Routing page 211 ...
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Page 303: ...P A R T V IPv6 IPv6 page 279 ...
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Page 307: ...P A R T VI Layer 2 3 Layer 2 3 page 283 ...
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Page 399: ...P A R T VII Multiprotocol Label Switching MPLS MPLS page 375 Multicast VPN page 385 ...
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Page 429: ...P A R T VIII Network Management Flexible NetFlow page 405 Network Management page 479 ...
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Page 595: ...P A R T IX Programmability Programmability page 571 ...
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Page 624: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 598 ping6 ...
Page 625: ...P A R T X QoS Auto QoS page 601 QoS page 641 ...
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Page 666: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 640 show auto qos ...
Page 706: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 680 trust device ...
Page 707: ...P A R T XI Routing Bidirectional Forwarding Detection page 683 ...
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Page 725: ...P A R T XII Security Security page 701 ...
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Page 875: ...P A R T XIII Stack Manager and High Availability Stack Manager and High Availability page 851 ...
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Page 1027: ...P A R T XV VLAN VLAN page 1003 ...
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Page 1100: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 1074 vtp primary ...
Page 1102: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 1076 Notices ...
Page 1108: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches IN 6 Index ...