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https://www.cisco.com/en/US/docs/ios-xml/ios/iproute_bgp/configuration/15-1sg/irg-4byte-asn.html
Nov 21, 2012 · The BGP Support for 4-Byte ASN feature introduced support for 4-byte autonomous system numbers. In Cisco IOS XE Release 2.4 and later releases, the Cisco implementation of 4-byte autonomous system numbers uses asplain as the default regular expression match and output display format for autonomous system numbers, but you can configure 4-byte ...
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16/irg-xe-16-book/bgp-support-for-4-byte-asn.html
Sep 12, 2019 · BGP Support for 4-byte ASN The Cisco implementation of 4-byte autonomous system (AS) numbers uses asplain (65538, for example) as the default regular expression match and the output display format for AS numbers.
https://sites.google.com/site/amitsciscozone/home/bgp/understanding-bgp-4-byte
Understanding BGP 4-byte ASN BGP Autonomous System Number (ASN) is a 2-byte (16-bits) entity. 2-bytes give 65536 possible numbers, of which, 0, 23456, 65535 and 64512- 65534 (private ASN) are reserved by IANA.
https://www.networkworld.com/article/2233273/understanding-4-byte-autonomous-system-numbers.html
The 4-Byte ASN Format. 4-byte ASNs provide 2 32 or 4,294,967,296 autonomous system numbers ranging from 0 to 4294967295. The first thing to notice about these numbers is that they include all of ...
https://cciejc.blogspot.com/2013/04/bgp-support-for-4-byte-asn.html
Apr 18, 2013 · BGP Support for 4-byte ASN Prior to January 2009, BGP autonomous system numbers that were allocated to companies were 2-octet numbers in the range from 1 to 65535 as described in RFC 4271, A Border Gateway Protocol 4 (BGP-4). Due to increased demand for autonomous system numbers, the Internet Assigned Number Authority (IANA) will start in ...
https://community.cisco.com/t5/routing/reg-bgp-4-byte-asn-support-in-catalyst-3750g-24-ts-switch/td-p/2708403
Hello, I would like to know whether Catalyst 3750G-24-TS Switch supports 4-Byte BGP ASN in any of the latest IOS? I have checked in the current IOS and it supports only 2-Byte ASN (1-65535) Thanks in advance Kiran. Find A Community. ... Reg. BGP 4-Byte ASN support in Catalyst 3750G-24-TS Switch
https://networklessons.com/bgp/bgp-4-byte-number
BGP speakers that support 4-byte AS numbers advertise this via BGP capability negotiation and there is backward compatibility. When a “new” router talks to an “old” router (one that only supports 2-byte AS numbers), it can use a reserved AS number (23456) called AS_TRANS instead of its 4-byte AS number.
https://ccie5851.blogspot.com/2017/03/4-byte-bgp-asn-support-in-nsx-63.html
Mar 04, 2017 · 4-byte ASN support is inherent in NSX 6.3 so there is no need to enable it via the GUI, CLI or API. Let’s start with looking at our existing BGP config, which in this case is using an old school 2-bye ASN configuration to a Cisco 4948 switch.
https://ipnet.xyz/2009/09/cisco-2-bytes-4-bytes-asn-bgp-scenarios/
Sep 18, 2009 · Hello Vaib, According to Cisco the 3750 cannot support yet (or maybe ever) the 4-byte ASN. So you’ll have to connect both ISP to that 1841 and apply a basic “single-homed” BGP configuration.You have to establish BGP sessions with both providers and to receive prefixes (or just a default route) from them.
https://community.cisco.com/t5/routing/bgp-4-byte-as-number/td-p/1438320
U need to configred 4 byte ASN in doted. Your BGP : 196921 is in plain notation, converting to asdot: ... according to cisco feature navigator BGP 4 byte AS number should be supported on several 12.2(33)SRE1 IOS images if you have a sup720 or an RSP 720 or a Sup 32 ... search by feature : BGP support for 4-byte ASN. so your question is wise ...
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