c3825 BGP ASN 32bit

[name29BELVA]

Hello,

I have a router cisco c3825 with 256mb of ram and 64mb of flash memory.

I need to setup a bgp instance but our asn it's in the new format (32bit).

Can someone help me to understand what ios version support this ASN ?

Now, the router running c3825-adventerprisek9-mz.124-25g.bin

Thank's

[sean_evershed · Accepted solution]

Support on the 3800 platform was introduced with Release 12.4(24)T. See the link below for details:

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

Don't forget to rate all posts that are helpful.

[Muhammad Thanveer · Accepted solution]

Hello friend it is supported in 3800 series routers. i have also included soe other deatails please go through them

Plese rate the helpful posts...

Cisco IOS Software Release 12.4(24)T

Cisco 1800, 2800, 3800 Series

Benefits

• Cisco IOS "4-byte ASN" feature allows BGP to carry Autonomous System Number (ASN) encoded as a 4-byte entity. The addition of this feature allows an operator to use an expanded 4-byte AS number granted by IANA as the existing 2-byte ASN pool is close to exhaustion.

• The implementation includes the following enhancements to ensure a smooth migration from a 2-byte to a 4-byte ASN environment

– Advertisement via standard based BGP capability code

– Two new "optional transitive" attributes: AS4_AGGREGATOR and AS4_PATH

– A newly reserved AS TRANS# 23456 for interoperability between 4-byte ASN capable and non-capable BGP speakers

• To further reduce the operation change requirement when an operator is migrating from a 2-byte to a 4-byte ASN environment, the implementation provides a default "asplain" and an optional "asdot" AS output format

• The initial release supports all existing BGP features including IPv4, IPv6, VPNv4, and VPNv6 address and sub-address families, with the exception of "IOS NetFlow"

Feature Availability

Software Release	Hardware Platform
Cisco IOS Software Release 12.4(24)T	Cisco 1800, 2800, 3800 Series
Releases 12.0(32)S11, 12.0(33)S, 12.0(32)SY	Cisco 7200 Series
Releases 12.0(32)S11, 12.0(33)S, 12.0(32)SY	Cisco 12000 Series
RLS3	Cisco ASR 1000 Series
Release 12.2(33)SXI1	Catalyst 6500 Series

Additional Information

Border Gateway Protocol (BGP) on Cisco.com: http://www.cisco.com/en/US/products/ps6636/products_ios_protocol_option_home.html

Regards
Thanveer
"Everybody is genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is a stupid."

[Steve Fuller · Accepted solution]

Hi,

The BGP 4-Byte ASN support was added to a release in the 12.4T train and so is not supported on the 12.4 Mainline train you're currently running.

If you want to stay on an IOS 12.4 release then you will need to run a 12.4T version. The router you have only has 256MB/64MB DRAM/flash and so you'll be limited on the feature set you can use. In the 12.4T release you would need 512MB/128M DRAM/Flash to run the Advanced Enterprise Services feature set that you're currently running.

If you have to use a different feature set e.g., Enterprise Services because of the memory and flash limitation, then you need to ensure all the features you currently use are supported with the new image.

If you can upgrade the memory to 512MB/128MB then this also opens up the option to use an IOS 15.0 or 15.1 version that also supports the feature.

The full list of IOS versions, feautre sets and memory requirements for the Cisco 3825 with the 4-Byte ASN feauture is in the attached Excel spreadsheet.

Regards

[Muhammad Thanveer]

Good information steve...

Regards
Thanveer
"Everybody is genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is a stupid."

[name29BELVA]

The router it's used as LNS.

It's receive l2tp session from LAC.

I need this features:

vpdn/l2tp

radius client

bgp

ospf

This features are available in other version?

[Muhammad Thanveer]

I believe 12.4 t and above supports all of them

Regards
Thanveer
"Everybody is genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is a stupid."