[c-nsp] 67xx cards and full tables
krunal shah
krun.shah at gmail.com
Thu Nov 24 12:51:53 EST 2016
Thnx James, Basically I wanted to push management to enable IPv6 and get
transit circuit. But it is hard to justify cost vs benefit. So I wanted to
check if I can enable it with existing hardware. I am also running 15.3(3)S6
code for all internet facing routers.
Krunal
On Thu, Nov 24, 2016 at 9:55 AM, James Bensley <jwbensley at gmail.com> wrote:
> On 23 November 2016 at 22:02, krunal shah <krun.shah at gmail.com> wrote:
> > Hello,
> >
> > Is there anyone importing full table IPv4 and IPv6 in 6708 line cards?
> >
> > I am looking to see if any operational issues with installing full BGP
> > table in a VRF both IPv4 and IPv6 in VRF from more than 2 BGP sources on
> > 7600 router with RSP720-3CXL 4GB RP and 2GB SP memory. I also need some
> > room for MPLS routes may be around 2000 IPv4 routes and lables.
> >
> > System has only one VRF and and allocating labels per VRF.
> >
> > #sh mls cef maximum-routes
> > FIB TCAM maximum routes :
> > =======================
> > Current :-
> > -------
> > IPv4 + MPLS - 768k (default)
> > IPv6 - 127k
> > IP Multicast - 1k
> >
> > Looking to see how much memory (show memory statistics) and processor
> > utilization.
>
>
> Hi Kruanl,
>
> You can run the full IPv4 and IPv6 tables on 6708 cards with
> RS720-3CXL assuming DFC-3CXL on the line cards. This is an Internet
> facing 7606 we have with such a configuration. Sadly this box has 2GB
> of RP RAM not 4GBs, but not many of our 7600s have the full table. The
> box is running 15.3(3)S6. Note that the full table is in the GRT not a
> VPN for this box, we see the IPV4 BGL table as about 610k routes so we
> have about 50k VPNv4 routes. If you are using per-VRF labels then I
> wouldn't expect any more memory usage than we have below as we are
> using a mixture of per-prefix and per-vrf so ours is probably higher
> than what yours would be.
>
> Overall its "ok" with 2GBs of SP RAM but I wouldn't recommend
> deploying this now, its time to move away from these 7600s. We have
> some MX480s in the same racks and we are migrating stuff over. It
> "will work" with what you have suggested but it won't have much
> longevity. Also a BGP bounce on the transit bounce does NOT go
> unnoticed.
>
> Cheers,
> James.
>
>
>
> 7606-S-15.3(3)S6#show memory statistics
> Head Total(b) Used(b) Free(b) Lowest(b)
> Largest(b)
> Processor 13FCECD8 1677923112 1191216368 486706744 474380240
> 479577996
> I/O 78000000 134217728 50041376 84176352 83398176
> 83923804
>
>
> 7606-S-15.3(3)S6#show platform hardware capacity forwarding
> L2 Forwarding Resources
> MAC Table usage: Module Collisions Total Used
> %Used
> 5 0 98304 879
> 1%
> 6 0 98304 897
> 1%
>
> L3 Forwarding Resources
> Module FIB TCAM usage: Total
> Used %Used
> 5 72 bits (IPv4, MPLS, EoM) 901120
> 797960 89%
> 144 bits (IP mcast, IPv6) 73728
> 32647 44%
>
> detail: Protocol Used
> %Used
> IPv4 664911
> 74%
> MPLS 133045
> 15%
> EoM 4
> 1%
>
> IPv6 32640
> 44%
> IPv4 mcast 4
> 1%
> IPv6 mcast 3
> 1%
>
> Adjacency usage: Total Used
> %Used
> 1048576 210850
> 20%
> L3 Forwarding Resources
> Module FIB TCAM usage: Total
> Used %Used
> 6 72 bits (IPv4, MPLS, EoM) 901120
> 797960 89%
> 144 bits (IP mcast, IPv6) 73728
> 32647 44%
>
> detail: Protocol Used
> %Used
> IPv4 664911
> 74%
> MPLS 133045
> 15%
> EoM 4
> 1%
>
> IPv6 32640
> 44%
> IPv4 mcast 4
> 1%
> IPv6 mcast 3
> 1%
>
> Adjacency usage: Total Used
> %Used
> 1048576 210846
> 20%
>
>
>
> 7606-S-15.3(3)S6#show module
> Mod Ports Card Type Model Serial
> No.
> --- ----- -------------------------------------- ------------------
> -----------
> 1 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX
> 2 48 CEF720 48 port 1000mb SFP WS-X6748-SFP
> 3 4 CEF720 4 port 10-Gigabit Ethernet WS-X6704-10GE
> 4 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX
> 5 8 CEF720 8 port 10GE with DFC WS-X6708-10GE
> 6 5 Route Switch Processor 720 10GE (Activ RSP720-3CXL-10GE
>
> Mod Sub-Module Model Serial Hw
> Status
> ---- --------------------------- ------------------ ----------- -------
> -------
> 1 Centralized Forwarding Card WS-F6700-CFC 4.1 Ok
> 2 Centralized Forwarding Card WS-F6700-CFC 4.1 Ok
> 3 Centralized Forwarding Card WS-F6700-CFC 4.1 Ok
> 4 Centralized Forwarding Card WS-F6700-CFC 4.1 Ok
> 5 Distributed Forwarding Card WS-F6700-DFC3CXL 1.6 Ok
> 6 Policy Feature Card 3 7600-PFC3CXL-10GE 1.2 Ok
> 6 C7600 MSFC4 Daughterboard 7600-MSFC4 2.2 Ok
>
>
> 7606-S-15.3(3)S6#show platform hardware pfc mode
> PFC operating mode : PFC3CXL
>
>
> 7606-S-15.3(3)S6#show mls cef maximum-routes
> FIB TCAM maximum routes :
> =======================
> Current :-
> -------
> IPv4 + MPLS - 880k (default)
> IPv6 - 64k
> IP Multicast - 1k
>
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