Re: Max routes in VRF?

Hi Jacques,

  You are right ,its same ,my bad ......Refer to the below link on page
21,it list the TCAM entry consumed for each type of routes ,just listing the
same as below

  http://www.cisco.com/networkers/nw04/presos/docs/RST-2312.pdf

  Ipv4 routes ---1 TCAM entry
  ipv4 routes(vpn/vrf) -- 1 TCAM entry
  ipv4 multicast -- 2 TCAM entry
  ipv6 (anycast/unicast) -- 2 TCAM entry
  MPLS labels -- 1 TCAM entry

Regards
Anantha Subramanian Natarajan

On Mon, Jul 6, 2009 at 1:54 AM, Jacques Allison <jacques_at_zallison.com>wrote:

> Hi,
> According to the "FIB TCAM usage" output both IPv4 and MPLS is under "72
> bit" and must be the same.
>
> Still no feedback on other questions - i'm sure someone must have tried
> this
> before...
>
> Regards,
> Jacques
> CCIE#8545
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Anantha Subramanian Natarajan
> Sent: 06 July 2009 05:07 AM
> To: Jacques Allison; Cisco certification
> Subject: Re: Max routes in VRF?
>
> Hi Jacques,
>
> For Question 2 ...I *think* TCAM usage of vpnv4 routes is double than the
> plain ipv4 route,
>
> Thanks
>
> Regards
> Anantha Subramanian Natarajan
>
>
>
>
> On Fri, Jul 3, 2009 at 1:21 AM, Jacques Allison <jacques_at_zallison.com
> >wrote:
>
> > Thanks for the valuable feedback.
> >
> > As below, it's a sup720-3bxl (Show modules)
> >
> > 5 2 Supervisor Engine 720 (Active) WS-SUP720-3BXL
> >
> > And this is the max routes,
> > Host# show mls cef maximum-routes
> > FIB TCAM maximum routes :
> > =======================
> > Current :-
> > -------
> > IPv4 + MPLS - 512k (default)
> > IPv6 + IP Multicast - 256k (default)
> >
> >
> > Also, each line card has "L3 Forwarding Resources" that can be used:
> > L3 Forwarding Resources
> > Module FIB TCAM usage: Total
> Used
> > %Used
> > 4 72 bits (IPv4, MPLS, EoM) 1048576
> 7625
> > 1%
> > 144 bits (IP mcast, IPv6) 7755 135
> > 2%
> >
> > detail: Protocol Used
> > %Used
> > IPv4 3
> > 1%
> > MPLS 7622
> > 1%
> > EoM 0
> > 0%
> >
> > IPv6 5
> > 1%
> > IPv4 mcast 130
> > 2%
> > IPv6 mcast 0
> > 0%
> >
> > Adjacency usage: Total Used
> > %Used
> > 1048576 7755
> > 1%
> >
> > Some follow up question:
> > 1. has anyone imported the global routing table (GRT) into a VRF without
> > any
> > problems?
> > 2. having GRT routes in IPv4 or VPNv4 VRF has the same TCAM usage?
> > 3. I assume that all PE devices that import the vrf routes need enough
> FIB
> > TCAM for MPLS.
> > 4. same with each line card should have enough FIB TCAM available.
> > 5. with "mls cef maximum-routes" , if you increase the mpls allocation it
> > would decrease ip automatically ?
> > 6. how does mls cef maximum-routes relate to module FIB TCAM usage?
> > 7. what issues would you foresee if I have a transit AS with internet VRF
> > with all global routes?
> >
> > Regards,
> > J
> >
> >
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> > Alex
> > H. Ryu
> > Sent: 02 July 2009 11:12 AM
> > To: Jacques Allison
> > Cc: ccielab_at_groupstudy.com
> > Subject: Re: Max routes in VRF?
> >
> > If you are talking about SUP720-3BXL, probably not.
> >
> > You can check current TCAM usage using following command.
> >
> > sh platform hardware capacity forwarding
> >
> > Also, you can check maximum values.
> >
> > show mls cef maximum-routes
> >
> >
> > If you want to change TCAM partition, use following command from
> > configuration mode.
> >
> > (config)#mls cef maximum-routes ?
> > ip number of ip routes
> > ip-multicast number of multicast routes
> > ipv6 number of ipv6 routes
> > mpls number of MPLS labels
> >
> > (config)#mls cef maximum-routes ip ?
> > <1-1007> number of 1K entries
> >
> > (config)#mls cef maximum-routes ip-multicast ?
> > <1-503> number of 1K entries
> >
> > (config)#mls cef maximum-routes ipv6 ?
> > <1-503> number of 1K entries
> >
> > (config)#mls cef maximum-routes mpls ?
> > <1-1007> number of 1K entries
> >
> >
> > Since global full BGP table is too large - over 280k nowadays -, if you
> > want to keep it in VRF, single instance will be 280k or so.
> > That means that if you wants to keep 3 VRFs with full table, it will be
> > 280k * 3 , which is 880k entries.
> > It is beyond the limit.
> >
> >
> > Alex
> >
> >
> > Jacques Allison wrote:
> > > Would it be possible to run eBGP to multiple upstream ISP from with VRF
> > > address-family and get all global Internet routes? I would like to know
> > the
> > > maximum limits of routes within a VRF. I know it would depend on
> hardware
> > -
> > > let say it's a SUP720BXL with specs of 1 million routes. would this
> also
> > fit
> > > into VRF?
> > >
> > > Thanks
> > > J
> > >
> > >
> > > Blogs and organic groups at http://www.ccie.net
> > >
> > > _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Mon Jul 06 2009 - 07:49:36 ART