ASR 1000 and 4-byte Autonomous System Number

Answered Question
May 21st, 2010

Hello,

I'm looking for an edge router with GE interfaces, full routing table and 4-byte ASN support.

This router will receive full BGP feeds from a couple of transit providers, and some small feeds from peering ISPs (10? 20? 30? don't know!); other required features are ACL, NetFlow, IPv6. It will have a 1GE link toward the core.

I identified the ASR 1000 series, but I would like to hear your opinion about the best model and, primarily, I would like to be sure they support 4-byte ASN.

Cisco Feature Navigator does not include 4-byte ASN support neither for RP1 nor for RP2. Another document [1] says this feature is included in rel. 3, but I could not find this release anywhere.

Supposing 4-Byte ASN are supported, can you see any reason I should chose ASR 1002 ESP5 instead of ASR 1002-F (fixed) - apart from SPA slots and higher throughput?

Many thanks

[1] Cisco IOS BGP 4-Byte ASN Support

https://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6554/ps6599/data_sheet_C78-521821.html

I have this problem too.
0 votes
Correct Answer by Laurent Aubert about 6 years 6 months ago

Hi,

Yes, XNC supports BGP 4B-ASN

HTH

Laurent.

Correct Answer by Laurent Aubert about 6 years 6 months ago

Hi,

RLS 3 is 12.2(33)XNC.

The platform choice depends on your expected growth in terms of Bw, ports,... Also you need to define your level of redudancy.

Your local Cisco account team is better positionned to discuss this subject with you.

HTH

Laurent.

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Correct Answer
Laurent Aubert Fri, 05/21/2010 - 09:00

Hi,

RLS 3 is 12.2(33)XNC.

The platform choice depends on your expected growth in terms of Bw, ports,... Also you need to define your level of redudancy.

Your local Cisco account team is better positionned to discuss this subject with you.

HTH

Laurent.

piercarlo.chiodi Sun, 05/23/2010 - 23:31

Hi Laurent,

thanks for your answer.

Do you know if that IOS release supports 4-byte ASN? I can't find it on Cisco Feature Navigator.

Thanks in advance,


Pier Carlo

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