Dell S3100 EMC Command Line Reference Guide for the Series 9.14.2.1 - Page 399

bgp four-octet-as-support Enable 4-byte support for the BGP process. Syntax bgp four-octet-as-support To disable fast external failover, use the no bgp four-octet-as-support command. Defaults Command Modes Command History Disabled (supports 2-byte format) ROUTER BGP This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide. Version 9.10(0.0) 9.8(2.0) 9.8(1.0) 9.8(0.0P5) 9.8(0.0P2) 9.7(0.0) 9.2(1.0) 9.0.2.0 8.3.19.0 8.3.11.1 8.3.7.0 7.8.1.0 7.7.1.0 Description Introduced on the S3148. Introduced on the S3100 series. Introduced on the Z9100-ON. Introduced on the S4048-ON. Introduced on the S3048-ON. Introduced on the S6000-ON. Introduced on the Z9500. Introduced on the S6000. Introduced on the S4820T. Introduced on the Z9000. Introduced on the S4810. Introduced on the S-Series. Introduced on the C-Series. Usage Information Routers supporting 4-byte ASNs advertise that function in the OPEN message. The behavior of a 4-byte router is slightly different depending on whether it is speaking to a 2-byte router or a 4-byte router. When creating Confederations, all the routers in the Confederation must be 4 byte or 2 byte identified routers. You cannot mix them. Where the 2-byte format is from 1 to 65535, the 4-byte format is from 1 to 4294967295. Both formats are accepted and the advertisements reflect the entered format. For more information about using the 2 byte or 4-byte format, refer to the Dell EMC Networking OS Configuration Guide. This command automatically restarts the BGP instance for the configuration to take effect. Border Gateway Protocol 399