Re: [j-nsp] MTU on switch interfaces

Mark Tinka wrote: > > > > The MTU on EX4200 ports in port-mode access is 1514 bytes. Shouldn't > > it become 1518 bytes when the port is reconfigured in port-mode trunk ? > > You can set the interface MTU on the EX4200 to whatever you want; up to > 9,192 bytes. > Yes, I can, manually. But why

Re: [j-nsp] MTU on switch interfaces

On 19 December 2015 at 10:21, Tom Storey wrote: > Was always my understanding that JunOS MTU figures were on-the-wire > frame sizes, whereas Cisco was always payload sizes, with requisite > headers accounted for automagically. Preamble, SFD, DMAC, SMAC, EType, Payload, CRC, IFG

Re: [j-nsp] MTU on switch interfaces

But would that be +14 assuming no VLAN headers, +18 assuming 1 VLAN header, +22 assuming q-in-q ? Was always my understanding that JunOS MTU figures were on-the-wire frame sizes, whereas Cisco was always payload sizes, with requisite headers accounted for automagically. On 19 December 2015 at

Re: [j-nsp] MTU on switch interfaces

That's correct, but normally the port default MTU is set automagically when you change the trunk/access mode. > Le 19 déc. 2015 à 09:21, Tom Storey a écrit : > > But would that be +14 assuming no VLAN headers, +18 assuming 1 VLAN > header, +22 assuming q-in-q ? > > Was always

[j-nsp] MTU on switch interfaces

Dear Colleagues, The MTU on EX4200 ports in port-mode access is 1514 bytes. Shouldn't it become 1518 bytes when the port is reconfigured in port-mode trunk ? And if I want to configure the MTU on an EX4200 to match MTU=2000 on a Cisco Catalyst, what would be the correct value? 2014? 2018?

Re: [j-nsp] MTU on switch interfaces

On 19/Dec/15 05:23, Victor Sudakov wrote: > Dear Colleagues, > > The MTU on EX4200 ports in port-mode access is 1514 bytes. Shouldn't > it become 1518 bytes when the port is reconfigured in port-mode trunk ? You can set the interface MTU on the EX4200 to whatever you want; up to 9,192 bytes.