BGP support in Cisco 3650/ 3750

boris.kotlarsky · ‎09-10-2013

Hi,

I have to replace old Cisco Catalyst 4500 to a new switch.

There is a following BGP configurations in the existing switch:

router bgp 64725

no synchronization

bgp router-id 10.254.14.66

bgp log-neighbor-changes

bgp scan-time 20

network 10.X.X.X mask 255.255.0.0

timers bgp 10 30

neighbor X.X.X.X remote-as XXXX

neighbor X.X.X.X update-source Loopback0

neighbor X.X.X.X soft-reconfiguration inbound

no auto-summary router bgp XXXX
no synchronization
bgp router-id 10.254.14.66
bgp log-neighbor-changes
bgp scan-time 20

Can this configuration be placed in Cisco 3560 or Cisco 3750 switch with advance IP license?

cadet alain · ‎09-10-2013

Hi,

you need ipservices or advanced ipservices to configure BGP.

Regards

Alain

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InayathUlla Sharieff · ‎09-10-2013

Agree with Alain,

3560s/3750s have enough memory to run several hundred BGP prefixes or more, if that meets your needs. That may be sufficient to run an IGP, or to advertise BGP to an upstream provider (and just take a default router via BGP in the downstream direction). Definitely won't take a full Internet table, but in many cases that's not necessary anyway.

Been there done that a few times. It works fine, and as always you just need to be mindful of the limitations of the platform in so far as memory and TCAM size. You will need the IPSERVICES featureset though, as BGP isn't supported on the IPBASE featureset.

Featurewise it's fairly much all OK, I can't remember anything missing in the implementation compared to much bigger switches and the config is exactly the same as all other IOS devices.

Ref:

====

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/white_paper_c11-579326_ps10745_Products_White_Paper.html

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_tech_note09186a00801e7bb9.shtml

HTH

Regards

Inayath