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

csawest.dc · ‎11-15-2009

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.

Giuseppe Larosa · ‎11-15-2009

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 · ‎11-15-2009

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 · ‎11-16-2009

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 · ‎11-17-2009

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 · ‎11-22-2009

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