BGP and ios upgrade question

Michael Fox michaelfox100 at gmail.com
Fri Apr 3 19:12:53 UTC 2009


srg wrote:
> Hello:
>
> A little customer has a Cisco 1841 router running ios 12.3(8r)T8.
> At the end of this mail is a "show version" from the router.
>
> Now, he wants to run BGP.
>
> His current ios version 12.3(8r)T8 does not support BGP.
>
> According to Cisco feature navigator, ios version 12.4(24)T
> (c1841-ipbasek9-mz.124-24.T.bin) can run in the 1841 and supports BGP
> (note that feature set is IPBASE):
> http://tools.cisco.com/ITDIT/CFN/Dispatch?act=feature&imageid=1321931&platformFamily=280&featureSet=448&featureSelected=89&availSoftwares=IOS%20XE&availSoftwares=IOS
>
> 12.4(24)T requires 128MB DRAM and 32MB flash
>
> Remote peers will announce ONLY the default route to the 1841
>
> My questions are:
>
> 1) It is common that a version with an IPBASE feature set supports BGP
> (some docs says that bgp support is included in "SP" services feature
> set)?
> 2) Will ios version 12.4(24)T run OK in the 1841? 
> I think the response will be YES because Cisco feature navigator says
> that it is supported and the router has the DRAM and FLASH needed by
> 14.4(24)T.
> 3) Must the customer pay in order to download 12.4(24)T or he can
> download if he has a valid Cisco maintenance contract for that router?
>
> -------------------------------
> show version
>
> Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.3(8)T8,
> RELEASE OFTWARE (fc1) Technical
> Support:http://www.cisco.com/techsupportCopyright (c) 1986-2005 by Cisco
> Systems, Inc.
>
> Compiled Wed 06-Apr-05 02:17 by yiyan
>
>
> ROM: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1)
>
>
> r1 uptime is 10 weeks, 5 days, 32 minutes System returned to ROM by
> power-on System image file is "flash:c1841-ipbase-mz.123-8.T8.bin"
>
>
> cisco 1841 (revision 5.0) with 118784K/12288K bytes of memory.
>
> 6 FastEthernet interfaces
>
> DRAM configuration is 64 bits wide with parity disabled.
>
> 191K bytes of NVRAM.
>
> 31360K bytes of ATA CompactFlash (Read/Write)
>
>
> Configuration register is 0x2102
>
> Thanks and best regards
>
>
>   
FWIW, I have 1760's running 12.4(21a)  accepting BGP default routes in 
my remote offices. They run about 20% cpu normally. They also run eigrp 
with redistribution. No problems. I think if the 1760 can  do it the 
1841 shouldn't have a problem.

Michael Fox




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