Mailing List Archive

You can set both duplex as well as linkspeed at the interface level.
(using the link-mode and speed parameters).
Frankly, I wouldn't use auto-negotiate on a router, especially not when
connecting different brands of hardware (non-Juniper to a Juniper).

Cheers,

Erik

On Sat, 2004-02-14 at 01:32, Mike Sumrall wrote:
> I have a M5 with a 4X FE pic, here's the show chassis:
>
> PIC 0 REV 04 750-002992 HA7235 4x F/E, 100 BASE-TX
>
> Does this pic only support 100M? and not 10M? is it full or half
> duplex? and does it support autonegotiate?
>
> Thanks,
>
> -Mike
>
> Mike Sumrall
> Integrated Communications Concepts
> Sr. Systems Engineer
> Work: 714-970-5011
> Cell: 714-234-3404
> msumrall@ic2net.net
--
---
Erik Haagsman
Network Architect
We Dare BV
tel: +31.10.7507008
fax: +31.10.7507005
http://www.we-dare.nl

Wow...sorry..when re-reading my post I realised that only applies to the
12 and 48 ports FE's. The 4 port only supports 100 mbit/s.

Cheers,

Erik

On Sat, 2004-02-14 at 01:43, Erik Haagsman wrote:
> You can set both duplex as well as linkspeed at the interface level.
> (using the link-mode and speed parameters).
> Frankly, I wouldn't use auto-negotiate on a router, especially not when
> connecting different brands of hardware (non-Juniper to a Juniper).
>
> Cheers,
>
> Erik
>
> On Sat, 2004-02-14 at 01:32, Mike Sumrall wrote:
> > I have a M5 with a 4X FE pic, here's the show chassis:
> >
> > PIC 0 REV 04 750-002992 HA7235 4x F/E, 100 BASE-TX
> >
> > Does this pic only support 100M? and not 10M? is it full or half
> > duplex? and does it support autonegotiate?
> >
> > Thanks,
> >
> > -Mike
> >
> > Mike Sumrall
> > Integrated Communications Concepts
> > Sr. Systems Engineer
> > Work: 714-970-5011
> > Cell: 714-234-3404
> > msumrall@ic2net.net
--
---
Erik Haagsman
Network Architect
We Dare BV
tel: +31.10.7507008
fax: +31.10.7507005
http://www.we-dare.nl

I wouldn't use auto-negotiate anywhere.
As to connecting same brand of hardware, I once had auto-neg issues between
the same brand (the one that begins with C :-), so that exception went out
of my book.


Rubens



----- Original Message -----
From: "Erik Haagsman" <erik@we-dare.net>
To: "Juniper-NSP" <juniper-nsp@puck.nether.net>
Sent: Friday, February 13, 2004 10:43 PM
Subject: Re: [j-nsp] Does FE support 100M only?


> You can set both duplex as well as linkspeed at the interface level.
> (using the link-mode and speed parameters).
> Frankly, I wouldn't use auto-negotiate on a router, especially not when
> connecting different brands of hardware (non-Juniper to a Juniper).
>
> Cheers,
>
> Erik
>
> On Sat, 2004-02-14 at 01:32, Mike Sumrall wrote:
> > I have a M5 with a 4X FE pic, here's the show chassis:
> >
> > PIC 0 REV 04 750-002992 HA7235 4x F/E, 100 BASE-TX
> >
> > Does this pic only support 100M? and not 10M? is it full or half
> > duplex? and does it support autonegotiate?
> >
> > Thanks,
> >
> > -Mike
> >
> > Mike Sumrall
> > Integrated Communications Concepts
> > Sr. Systems Engineer
> > Work: 714-970-5011
> > Cell: 714-234-3404
> > msumrall@ic2net.net
> --
> ---
> Erik Haagsman
> Network Architect
> We Dare BV
> tel: +31.10.7507008
> fax: +31.10.7507005
> http://www.we-dare.nl
>
>
>
>
> _______________________________________________
> juniper-nsp mailing list juniper-nsp@puck.nether.net
> http://puck.nether.net/mailman/listinfo/juniper-nsp
>

> I wouldn't use auto-negotiate anywhere.
> As to connecting same brand of hardware, I once had auto-neg issues between
> the same brand (the one that begins with C :-), so that exception went out
> of my book.

We use autonegotiation on all equipment (Cisco routers, Juniper routers, 3Com
switches, Lucent access servers, Allied Telesyn switches) since 1995 and the
only problem we came acros was with people, who lock their speed and duplex
when connecting to us and don't tell us beforehand.

> Wow...sorry..when re-reading my post I realised that only applies to the
> 12 and 48 ports FE's. The 4 port only supports 100 mbit/s.

I've never tried it, but the CLI accepts the "set speed 10m" command just
fine. Interesting enough, it does not seem to affect anything, speed still
shows "100mbps" on show interface output:

Physical interface: fe-0/1/3, Enabled, Physical link is Down
Interface index: 135, SNMP ifIndex: 65
Link-level type: Ethernet, MTU: 1514, Speed: 100mbps, Loopback: Disabled,
Source filtering: Disabled,
Flow control: Enabled
Device flags : Present Running Down
Interface flags: Hardware-Down SNMP-Traps
Link flags : None
Current address: 00:90:69:92:00:22, Hardware address: 00:90:69:92:00:22
Last flapped : 2004-01-27 04:42:21 CET (2w4d 07:11 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Active alarms : LINK
Active defects : LINK

On 11:55 Sat 14 Feb , Blaz Zupan wrote:
> > Wow...sorry..when re-reading my post I realised that only applies to the
> > 12 and 48 ports FE's. The 4 port only supports 100 mbit/s.
>
> I've never tried it, but the CLI accepts the "set speed 10m" command just
> fine. Interesting enough, it does not seem to affect anything, speed still
> shows "100mbps" on show interface output:
>
> Physical interface: fe-0/1/3, Enabled, Physical link is Down
> Interface index: 135, SNMP ifIndex: 65
> Link-level type: Ethernet, MTU: 1514, Speed: 100mbps, Loopback: Disabled,
> Source filtering: Disabled,
> Flow control: Enabled
> Device flags : Present Running Down
> Interface flags: Hardware-Down SNMP-Traps
> Link flags : None
> Current address: 00:90:69:92:00:22, Hardware address: 00:90:69:92:00:22
> Last flapped : 2004-01-27 04:42:21 CET (2w4d 07:11 ago)
> Input rate : 0 bps (0 pps)
> Output rate : 0 bps (0 pps)
> Active alarms : LINK
> Active defects : LINK

Erik's statement is correct. The original 4-port FE PIC only supports 100M. Committing the 10M config should give you an error messages in the messages.log:

Feb 14 12:26:11 Adam /kernel: fe-7/2/3: Illegal media change: invalid speed

(this was 6.1R1.4..)

Regards,
-Daniel

>
> _______________________________________________
> juniper-nsp mailing list juniper-nsp@puck.nether.net
> http://puck.nether.net/mailman/listinfo/juniper-nsp

> Erik's statement is correct. The original 4-port FE PIC only supports 100M. Committing the 10M config should give you an error messages in the messages.log:
>
> Feb 14 12:26:11 Adam /kernel: fe-7/2/3: Illegal media change: invalid speed
>
> (this was 6.1R1.4..)

Ok, so we found a bug in 5.7R3.4 :-)