[c-nsp] ME3600 iBGP to RR

Mark Tinka mark.tinka at seacom.mu
Thu Mar 5 08:09:38 EST 2015



On 5/Mar/15 10:26, CiscoNSP List wrote:
> Hi Everyone,
>
> Using ME3600's to terminate customer tails (VRF's and Inet), and am after some recommendations on a template for the RR-Client->RR session..ME3600 only supports 20K IPv4 routes so was going to implement something like:
>
>  template peer-policy TO_RR_iBGP
>   next-hop-self
>   soft-reconfiguration inbound
>   maximum-prefix 20000 70
>   send-community both
>  exit-peer-policy
>
> address-family ipv4
>   neighbor xxx.xxx.xxx.xxx inherit peer-policy TO_RR_iBGP
>
> plus route-maps controlling in/out prefixes
>
> Any other suggestions (i.e. resetting bgp session if certain threshold is hit, then re-establishing session after x minutes, or being more frugal on number of routes allowed etc) are greatly appreciated.

Don't do "soft-reconfiguration", you'll just eat up more memory for no
reason.

Do what I do for this - deploy BGP-SD and don't worry about the lack of
FIB space on this platform.

You can filter what gets into the FIB using BGP-SD. Much more elegant
than "max-prefix".

Mark.


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