Req. 4 byte BGP support in cisco 3750G-12S-S ?

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Nov 15th, 2009
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Please find herewith running-cong of my 1841 router.

There is in my ISP currently working 45 MB bandwidth from Reliance.

In 1841 router right now only two Fastethernet Card Fe0/1 from Reliance and fe0/0 to my network,

4 byte bgp routing working fine in 1841 router with 45 MB bandwidth, now we need to requried anather

45 MB bandwidth from Airtel.

We need when reliance 45 MB used full load then it's start to use Airtel bandwidht and also when any

one ISP bandwitdh goes down it's autometic full load up on anather ISP bandwidth.

can it is possible in 1841 router ?

how many FAstEthernet we have to need when 2 ISP bandwith in 1841 router at present only 2 FastEthernet in my 1841.


Please help me what is the configuration of BGP when 2 ISP bandwith in 1841 router.

Reliance ASN-- 18101

Neignbor IP -- 220.225.63.150

Airtel ASN--4755

Neighbour-- 97.101.144.129

My IP Netwrok from APNIc 111.235.72.1 255.255.252.0

My ASN--131215 ( 4 byte ASN) convert to ASDOT for BGP in 1841 2.143


One more think I have four 3750G-12S-S (12 SFP port Switch), can 4 byte BGP support in 3750g Swtich ? if yes so which IOS i hv to need.

Please help me it's very URGENT for me.

Thanks in ADV,

Vaibhav.





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Giuseppe Larosa Sun, 11/15/2009 - 03:29
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Hello Vaibhav,

a C1841 is accredited of 75000 packet per second pps with no feature.

This is equivalent to 38 Mbps.


It cannot handle 45 Mbps on a link and an additional link.


also there is no easy mechanism to trigger usage of second ISP when first link is full.


about 3750G I don't think it is able to support 4 byte ASN in current IOS versions


see

feature navigator


www.cisco.com/go/fn


Hope to help

Giuseppe


csawest.dc Sun, 11/15/2009 - 06:42
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Dear Giuseppe,


Thansk for quick support, one more help pl, what it the configuration for two ISP Bandwith with BGP routing i need to config in my router.


My ASN 131215 ( 2.143)

my Network 111.235.72.0/22


1 ISP ASN- 18101

their Neighbor IP 220.225.63.150


2 ISP ASN- 4755

their neighbor 97.123.49.152


can i need to config Route-map ?? or what i have to do when two ISP bandwith in single router with BGP routing ??


Thanks in ADV,


Vaib...


Giuseppe Larosa Mon, 11/16/2009 - 09:40
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Hello Vaibhav,


see following example of eBGP multihoming


http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a008009456d.shtml


you may want to be sure to be not a transit point between ISPs


ip as-path access-list 11 permit ^$


you then add


neigh isp1 filter-list 11 out

neigh isp 2 filter-list 11 out


Hope to help

Giuseppe


csawest.dc Tue, 11/17/2009 - 05:57
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Dear Sir,


Thank you very much for your gr8 support.


now i hv one quirry can Cisco WS-3750G-12S-S switch support 4 Byte BGP ? if yes so which IOS i need to upgrade.


Thanks in ADV,

Vaib...


Giuseppe Larosa Sun, 11/22/2009 - 06:41
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Hello Vaibhav,

I don't think C3750 supports 4 byte ASN in current IOS releases.


as you can see here:


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


only routers and C6500/7600 support it


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


Hope to help

Giuseppe

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