[j-nsp] MX204 vs. MX240??

[Aaron Gould]

We deployed the MX204 in pairs in 2 new markets that we entered into
recently... Houston and Dallas... the MX204 presents itself as a small and
relatively inexpensive but with nice port and feature versatility with its
MX capabilities.

We decided to roll them out with (2) 100g, (2) 40g, (4) 10g and (4) 1g...and
link them together with a 100g DAC cable

Btw, the MX204 defaults as a all-10gig interface box.. in its default
state...

[edit]
root# run show interfaces terse | grep "^et|^xe|^ge"
xe-0/0/0:0              up    down
xe-0/0/0:1              up    down
xe-0/0/0:2              up    down
xe-0/0/0:3              up    down
xe-0/0/1:0              up    down
xe-0/0/1:1              up    down
xe-0/0/1:2              up    down
xe-0/0/1:3              up    down
xe-0/0/2:0              up    down
xe-0/0/2:1              up    down
xe-0/0/2:2              up    down
xe-0/0/2:3              up    down
xe-0/0/3:0              up    down
xe-0/0/3:1              up    down
xe-0/0/3:2              up    down
xe-0/0/3:3              up    down
xe-0/1/0                up    down
xe-0/1/1                up    down
xe-0/1/2                up    down
xe-0/1/3                up    down
xe-0/1/4                up    down
xe-0/1/5                up    down
xe-0/1/6                up    down
xe-0/1/7                up    down

[edit]
root# run show interfaces terse | grep "^et|^xe|^ge" | count
Count: 24 lines


....so to achieve port speed that you want, this is what we did.


set chassis fpc 0 pic 0 port 0 speed 100g
set chassis fpc 0 pic 0 port 1 speed 100g
set chassis fpc 0 pic 0 port 2 speed 40g
set chassis fpc 0 pic 0 port 3 speed 40g

set chassis fpc 0 pic 1 port 0 speed 10g
set chassis fpc 0 pic 1 port 1 speed 10g
set chassis fpc 0 pic 1 port 2 speed 10g
set chassis fpc 0 pic 1 port 3 speed 10g
set chassis fpc 0 pic 1 port 4 speed 10g
set chassis fpc 0 pic 1 port 5 speed 10g
set chassis fpc 0 pic 1 port 6 speed 10g
set chassis fpc 0 pic 1 port 7 speed 10g

Verify. after.


root> show interfaces terse | grep "^et|^xe|^ge" | count
Count: 12 lines

root> show interfaces terse | grep "^et|^xe|^ge"
et-0/0/0                up    down
et-0/0/1                up    down
et-0/0/2                up    down
et-0/0/3                up    down
xe-0/1/0                up    down
xe-0/1/1                up    down
xe-0/1/2                up    down
xe-0/1/3                up    down
xe-0/1/4                up    down
xe-0/1/5                up    down
xe-0/1/6                up    down
xe-0/1/7                up    down

...then to get the (4) 1g that we wanted...

set interfaces xe-0/1/4 gigether-options speed 1g
set interfaces xe-0/1/5 gigether-options speed 1g
set interfaces xe-0/1/6 gigether-options speed 1g
set interfaces xe-0/1/7 gigether-options speed 1g


- Aaron