[j-nsp] Half Duplex Routing Engine m40?

Paul Goyette pgoyette at juniper.net
Wed Feb 16 14:58:52 EST 2005 

For that in-depth aspect of your problem, you'll need to
open up a support case with JTAC.

-----Original Message-----
From: Dennis Ponne [mailto:dennis at tune-in.nl]
Sent: Wednesday, February 16, 2005 11:47 AM
To: Paul Goyette
Cc: Dan Benson; juniper-nsp at puck.nether.net
Subject: RE: [j-nsp] Half Duplex Routing Engine m40?


But what I think is strange that packet loss accurs, and sometimes very
slow response times all over the network, am I maxed out with this m40?
Because the maximum traffic to the FXP1 is 3.1 mbit/s.

Do I need to order a new router with KPPS we are doing? Or is their some
kind of hardware faillure?

On Wed, 16 Feb 2005, Paul Goyette wrote:

> In both cases, the duplex of the interface on the RE is the
> result of negotiation with "the other end".  The M40 SCB is
> only a half-duply interface, so regardless of the RE's
> capability, the fxp1 can only run in half-dup mode.  On the
> other hand, if your fxp0 "management" Ethernet port is
> attached to a full-duplex device, then it will run run in
> full-dup mode.
>
> -----Original Message-----
> From: Dan Benson [mailto:dbenson at swingpad.com]
> Sent: Wednesday, February 16, 2005 11:37 AM
> To: Paul Goyette
> Cc: Dennis Ponne; juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] Half Duplex Routing Engine m40?
>
>
>  From what I know, there are two FXPs, one to the Craft interface on the
> front of the unit, and the other connects to the SCB.  On all of my
> M40's, I have full to the craft and half to the SCB.  Hope this helps..
//db
>
> Paul Goyette wrote:
>
> >The M40 internal PFE-to-RE link (fxp1) runs only in
> >half-duplex mode.
> >
> >-----Original Message-----
> >From: juniper-nsp-bounces at puck.nether.net
> >[mailto:juniper-nsp-bounces at puck.nether.net]On Behalf Of Dennis Ponne
> >Sent: Wednesday, February 16, 2005 11:15 AM
> >To: juniper-nsp at puck.nether.net
> >Cc: noc at netholding.nl
> >Subject: [j-nsp] Half Duplex Routing Engine m40?
> >
> >
> >Hi,
> >
> >I found something what I think is not correct.
> >
> >The routing-engine on our M20 box on FXP1 has a full-duplex link.
> >
> >dennis at m20.intxn.be.as24730.net> show interfaces fxp1
> >Physical interface: fxp1, Enabled, Physical link is Up
> >  Interface index: 2, SNMP ifIndex: 2
> >  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Speed: 100mbps
> >  Device flags   : Present Running
> >  Interface flags: SNMP-Traps
> >  Link type      : Full-Duplex
> >  Link flags     : 4
> >  Current address: 00:a0:a5:12:1c:1e, Hardware address: 00:a0:a5:12:1c:1e
> >  Last flapped   : Never
> >  Input packets : 332905148
> >  Output packets: 994816558
> >
> >
> >Now I check both our M40's and check this out:
> >
> >Physical interface: fxp1, Enabled, Physical link is Up
> >  Interface index: 2, SNMP ifIndex: 2
> >  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Speed: 100mbps
> >  Device flags   : Present Running
> >  Interface flags: SNMP-Traps
> >  Link type      : Half-Duplex
> >  Link flags     : 4
> >  Current address: 00:a0:a5:12:2b:53, Hardware address: 00:a0:a5:12:2b:53
> >  Last flapped   : Never
> >  Input packets : 1643478
> >  Output packets: 5153017
> >
> >
> >What we have we do a total on this M40 box 2.9 - 3.1 gigabit/s of traffic
> >outgoing and incomming 600 - 700 mbit/s on our transit/peering
interfaces.
> >
> >We run 197 peers on this box and the avaible memory is 351MB, this box
has
> >768MB of ram inside and uses a RE-2.
> >
> >The total pps is:
> >
> >250.000kpps average, Load in day time 300.000kpps Load up to 320.000kpps.
> >
> >But the strange is that we have packet loss, it does not matter wich
JunOS
> >we use, the packet loss to the router is heavy, but 9 of 10 times after
> >the router the ping is normal. But on the M20 this is not an issue.
> >
> >How can I force the FXP1 to be 100 FDX? Threw the software:
> >
> >edit interface fxp1
> >set link-mode full-duplex
> >
> >Does not work.
> >
> >JUNOS Base OS Software Suite [7.0R2.7]
> >
> >Hardware inventory:
> >Item             Version  Part number  Serial number     Description
> >Chassis                                53828             M40
> >Backplane        REV 02   710-001348   AL3546            M40 Backplane
> >Power Supply A   REV 04   740-000234   001516            AC Power Supply
> >Power Supply B   REV 04   740-000234   001598            AC Power Supply
> >Maxicab          REV 08   710-000229   AT3658            Host Maxi CAB
> >Minicab          REV 03   710-001739   AH8902            M40 Teknor Mini
> >CAB
> >Display          REV 08   710-000150   AP2907            M40 Display
Board
> >Routing Engine   REV 01   740-003239   9001009622        RE-2.0
> >SCB              REV 02   710-001838   AP9305            Internet
> >Processor IIv1
> >FPC 0            REV 01   710-001292   AN7304            FPC
> >  PIC 0          REV 03   750-002879   AN7060            1x G/E, 1000
> >BASE-SX
> >  PIC 1          REV 03   750-002879   AN7060            1x G/E, 1000
> >BASE-SX
> >  PIC 2          REV 03   750-002879   AN7060            1x G/E, 1000
> >BASE-SX
> >  PIC 3          REV 03   750-002879   AN7060            1x G/E, 1000
> >BASE-SX
> >FPC 2            REV 03   710-003308   BC0734            E-FPC
> >  PIC 0          REV 01   750-001324   AC4850            1x G/E, 1000
> >BASE-LX
> >FPC 5            REV 01   710-001292   AF3547            FPC
> >  PIC 0          REV 03   750-002879   AP1259            1x G/E, 1000
> >BASE-SX
> >  PIC 1          REV 03   750-002879   AP1259            1x G/E, 1000
> >BASE-SX
> >  PIC 2          REV 03   750-002879   AP1259            1x G/E, 1000
> >BASE-SX
> >  PIC 3          REV 03   750-002879   AP1259            1x G/E, 1000
> >BASE-SX
> >FPC 7            REV 01   710-001292   AJ0968            FPC
> >  PIC 0          REV 03   750-000603   AG7521            4x OC-3 SONET,
> >SMIR
> >  PIC 2          REV 08   750-001072   AH1073            1x G/E, 1000
> >BASE-SX
> >
> >dennis at m40.ams.gs> show system uptime
> >Current time: 2005-02-16 20:14:55 CET
> >System booted: 2005-01-26 23:09:08 CET (2w6d 21:05 ago)
> >Protocols started: 2005-01-26 23:10:23 CET (2w6d 21:04 ago)
> >Last configured: 2005-02-16 19:49:19 CET (00:25:36 ago) by dennis
> >8:14PM CET up 20 days, 21:06, 1 user, load averages: 0.02, 0.14, 0.22
> >
> >The question is how can make sure that a router that is no heavy loaded
> >towards it's routing engine can ping back in time? How do I set this
> >interface to be full-duplex?
> >
> >Thanks in advance,
> >
> >Dennis Ponne
> >
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> >
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> >
> >
> >
>
>
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