The GEIP has been upgraded to its maximum of 128 Mb DRAM an 8 Mb SRAM, which
can be verified in the 'show mem' I posted.
I've been able to change the buffer settings on the GEIP by logging into its
console and using configure... unfortunately the VIP console is ok for
changing running configuration but not apropriate for changing start-up
configuration.
Either way, that GEIP is counting lots of 'overruns', which occur even
before its known if a packet will be buffered or dropped. It seems that
buffer configuration is an issue (the same problem occurs also on VIPs with
FastEthernet PAs), but there seems to be something else going wrong.
Rubens Kuhl Jr.
-----Original Message-----
From: George Robbins [mailto:grr@shandakor.tharsis.com]
Sent: sexta-feira, 14 de julho de 2000 22:51
To: cisco-nsp@puck.nether.net; CMartin@mercury.balink.com;
rkuhljr@uol.com.br
Subject: RE: [nsp] Buffers settings on GEIP controller (7500 router)
The SRAM is typically fully used. The problem is likely that the
GEIP is configured with the minimal SRAM & DRAM, upgrading to what
you're normally put in a VIP2/50 in your world would be a good
starting point...
George
> From cisco-nsp-request@puck.nether.net Fri Jul 14 18:31:17 2000
> Resent-Date: Fri, 14 Jul 2000 18:32:11 -0400
> Received-Date: Fri, 14 Jul 2000 18:27:38 -0400
> From: "Rubens Kuhl Jr." <rkuhljr@uol.com.br>
> To: "Martin, Christian" <CMartin@mercury.balink.com>,
> "cisco-nsp" <cisco-nsp@puck.nether.net>
> Subject: RE: [nsp] Buffers settings on GEIP controller (7500 router)
> Date: Fri, 14 Jul 2000 19:28:38 -0300
> In-Reply-To: <4F8C08CC6E76D311AD1F00508B787249F8F005@HERMES>
> Resent-From: cisco-nsp@puck.nether.net
> X-Mailing-List: <cisco-nsp@puck.nether.net> archive/latest/3247
> X-Loop: cisco-nsp@puck.nether.net
> Precedence: list
> Resent-Sender: cisco-nsp-request@puck.nether.net
>
>
>
> Although I've never heard of per-VIP buffer settings, the VIPs on this
> router seems not to follow the global buffer configuration commands...
>
> I/O memory may be the issue. The GEIP 'show mem' shows that the 8Mb SRAM
is
> fully used:
> VIP-Slot4>show mem
> Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
> Processor 6068F1A0 127340704 25912004 101428700 101128988
> 101112860
> PCI 30000000 8388608 8382396 6212 6212 3988
>
> RSP has less fast memory, but it's not fully used:
> router# show mem
> Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
> Processor 61235EA0 249340256 22513572 226826684 224872320
> 224663032
> Fast 61215EA0 131072 93560 37512 37512 37468
>
> Data rate across Cybus is high (70%) but seems to be holding nice.
>
>
> Rubens Kuhl Jr.
>
>
> -----Original Message-----
> From: Martin, Christian [mailto:CMartin@mercury.balink.com]
> Sent: sexta-feira, 14 de julho de 2000 18:02
> To: 'Rubens Kuhl Jr.'; cisco-nsp
> Subject: RE: [nsp] Buffers settings on GEIP controller (7500 router)
>
>
> Rubens,
>
> You are looking at global particle pool information. You can thus
increase
> the global data. I don't know that you can do it on a per-VIP basis.
>
> You can do something like this:
>
> buffers big permanent 1000
> buffers big max-free 1500
> buffers big min-free 500
>
> Note that you will need to be sure that you have enough I/O (MEMD) memory
to
> do this. What is the data rate across the CyBUS? 'show contr cbus util'
> should reveal some things.
>
> regards,
> chris
>
> > -----Original Message-----
> > From: Rubens Kuhl Jr. [mailto:rkuhljr@uol.com.br]
> > Sent: Friday, July 14, 2000 4:26 PM
> > To: cisco-nsp
> > Subject: [nsp] Buffers settings on GEIP controller (7500 router)
> >
> >
> >
> >
> > I'm noticing a very large buffer miss rate on a GEIP controller (very
> > similar to a VIP2-50 with a Gigabit port adapter):
> >
> > Public buffer pools:
> > Small buffers, 104 bytes (total 25, permanent 25):
> > 25 in free list (20 min, 60 max allowed)
> > 2 hits, 0 misses, 0 trims, 0 created
> > 0 failures (0 no memory)
> > Middle buffers, 600 bytes (total 15, permanent 15):
> > 15 in free list (10 min, 30 max allowed)
> > 8 hits, 0 misses, 0 trims, 0 created
> > 0 failures (0 no memory)
> > Big buffers, 1524 bytes (total 100, permanent 5):
> > 6 in free list (5 min, 10 max allowed)
> > 2547640 hits, 861395 misses, 2231939 trims, 2232034 created
> > 104574 failures (0 no memory)
> > VeryBig buffers, 4520 bytes (total 148, permanent 50):
> > 148 in free list (40 min, 300 max allowed)
> > 104574 hits, 112 misses, 21 trims, 119 created
> > 0 failures (0 no memory)
> > Large buffers, 5024 bytes (total 0, permanent 0):
> > 0 in free list (0 min, 5 max allowed)
> > 0 hits, 0 misses, 0 trims, 0 created
> > 0 failures (0 no memory)
> > Huge buffers, 18024 bytes (total 1, permanent 1):
> > 1 in free list (0 min, 2 max allowed)
> > 0 hits, 0 misses, 0 trims, 0 created
> > 0 failures (0 no memory)
> >
> > The buffer settings are very different from the RSP, and I
> > think that's not
> > only because of particle pool memory allocation that the VIP
> > does. How to
> > set buffer parameters for VIP/GEIP ?
> >
> >
> > Rubens Kuhl Jr.
> >
>
>
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