[j-nsp] VLAN tagging on fxp?

[Kristian Larsson]

On Thu, Sep 08, 2005 at 01:31:33PM -0700, Joe McGuckin wrote:
> 
> So, you can afford a Juniper but you can't afford a 'real' switch? Even a
> used 3548 is only about $1200.
> 
> Repeat after me: 
> 
>   "I will not use DLINK or NETGEAR products in my network"
It's an Ericsson.
I'm not saying I will not replace it but for the
moment I'm stuck with it (read; until I get the
time to actually go there and replace it). And 
although replacing the switch would solve the 
problem at hand I still think it should be possible
to set 1500 on a Juniper, don't you?
Why skip NETGEAR and DLINK when a M5 for $10,000 
can't do its job properly?

//Kristian
> 
> Joe
> 
> 
> 
> On 9/8/05 12:40 PM, "Kristian Larsson" <kristian at juniks.net> wrote:
> 
> > On Thu, Sep 08, 2005 at 03:22:00PM -0400, Matt Yaklin wrote:
> >> 
> >> 
> >> On Thu, 8 Sep 2005, Kristian Larsson wrote:
> >> 
> >>> I'm in an environment where I need to tag the
> >>> traffic to a junipers out-of-band management port.
> >> 
> >> Couldn't you just create your switch port as an access port?
> >> As in the fxp0 does not need to be vlan aware. When it sends
> >> out a packet, your switch tags it. When the packet comes
> >> back it strips the tag.
> > No, unfortunately I cannot.
> > The switch only supports either "tagged mode" or
> > "port based vlans". Tagged mode configures every
> > port on the switch as a trunk while port based
> > doesn't support trunk ports but only segmentation
> > of the switch. And no, there is no native vlan and
> > no I cannot set a port to being a simple
> > switchport. The switch is basically braindead and
> > for the time being I'm stuck with it.
> > Right now I think the Juniper is just as braindead
> > as I should be able to set MTU on my mgmt
> > interface, right?
> > 
> > //Kristian
> >> Same result?
> >> 
> >> i hope this helps,
> >> good luck
> >> 
> >> m
> >> 
> >>> After configuring the port I ran into some problems..
> >>> ssh went just fine but when trying to upload/download
> >>> new firmware it just stopped. Debugging turned out that
> >>> subinterfaces to the fxp0 interface have a MTU of 1496.
> >>> 
> >>> Is it possible to change this?
> >>> mtu does not seem to be an option on the fxp interface!?
> >>> I tried setting it manually with ifconfig but to no avail
> >>> 
> >>> Juniper: feature request!?
> >>> 
> >>> //Kristian
> >>> 
> >>>     fxp0 {
> >>>         vlan-tagging;
> >>>         unit 10 {
> >>>             vlan-id 10;
> >>>             family inet {
> >>>                 address xx.xx.xx.xx/24;
> >>>             }
> >>> 
> >>>  Logical interface fxp0.10 (Index 67) (SNMP ifIndex 25)
> >>>     Flags: SNMP-Traps VLAN-Tag [ 0x8100.10 ]  Encapsulation: ENET2
> >>>     Bandwidth: 10mbps
> >>>     Input packets : 2295
> >>>     Output packets: 2575
> >>>     Protocol inet, MTU: 1496
> >>> 
> >>> _______________________________________________
> >>> juniper-nsp mailing list juniper-nsp at puck.nether.net
> >>> http://puck.nether.net/mailman/listinfo/juniper-nsp
> >>> 
> > _______________________________________________
> > juniper-nsp mailing list juniper-nsp at puck.nether.net
> > http://puck.nether.net/mailman/listinfo/juniper-nsp
> > 
> 
> -- 
> 
> Joe McGuckin
> 
> ViaNet Communications
> 994 San Antonio Road
> Palo Alto, CA  94303
> 
> Phone: 650-213-1302
> Cell:  650-207-0372
> Fax:   650-969-2124
>