Prepare For The Scb-Mx Upgrade - Juniper MX240 Hardware Manual

Prepare for the SCB-MX Upgrade

NOTE: Do not make other changes to the CLI during the entire upgrade process. To insure you
don't inadvertently change the CLI, open a telnet session to the master RE CLI operational mode
and issue the configure exclusive command. This command locks the configuration procedure.
TIP: To prevent traffic loss during the upgrade process, we recommend that you operate the
line cards at 50% line rate. This 50% limit must be maintained per PFE on each line card.
To prepare the MX240 router for the Enhanced MX Switch Control Board (SCBE-MX) upgrade:
1. Verify that the system runs Junos OS Release 11.4 or later by issuing the show version command on
the master router:
user@host> show version
Model: mx240
Junos Base OS Software Suite [11.4-20110530];
NOTE: The SCBE-MX is supported only in Junos OS Release 11.4 or later.
The latest software ensures a healthy system—that is—Routing Engines, control boards, and FPCs,
before the upgrade.
2. Verify that SCB-MX boards are installed:
user@host> show chassis hardware
Item Version
CB0 REV 07 710-021523 ABBC8281
CB1 REV 07 710-021523 ABBC8323
SCB-MX details are displayed as above, along with other hardware components. The MX240 router
has only two SCB-MXs, and each SCB-MX has four fabric planes.
3. Establish console connections to both Routing Engines. You can use a telnet session to connect to the
router console by issuing the <router name>-con command. For example, if the router name is juniper,
Part Number Serial Number Description
MX SCB
MX SCB
405