Cisco Cisco MGX 8230 and 8250 Modules Guida Alla Risoluzione Dei Problemi

Graceful PXM runtime firmware upgrades are not supported from release 1.1.21 to release 1.1.24.
This document includes an interim PXM runtime firmware upgrade to 1.1.23, which ensures database
integrity and user traffic continuity.

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No graceful downgrade is supported from release 1.1.24 or later to version 1.1.21 or below due to
MIB changes.

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This section explains IP addressing on the MGX 8850 shelf in general. There are three separate IP addresses
for on MGX 8850 shelf with two PXMs.

One cnfifip IP address, also known as the shelf IP address

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Two bootChange IP addresses, also known as the PXM IP address

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The cnfifip IP address or the shelf IP address is the live IP Address of the Active PXM Ethernet port on the
MGX 8850. It is the IP address used to manage the MGX 8850 shelf. If a switchcc occurs, the new MAC
address of the Standby PXM card is automatically broadcast out and takes over the cnfifip IP address.

To verify the existing IP address, issue the dspifip command. The dspifip output also displays the ATM and
SLIP addresses assigned to the MGX 8850 shelf.

The ATM address is used for inband IP routing (NWIP) management of the MGX 8850 shelf.

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The SLIP address is a legacy assigned to the MGX 8850.

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The SLIP interface does not support statistics collection. The cnfifip and bootChange IP addresses are
retained after the clrallcnf command is issued.

bootChange is a Service−level command that is used as necessary for MGX 8850 bring up when the PXMs
have no run time firmware. The bootChange IP address or the PXM IP address should be different than the
cnfifip IP address.

The bootChange IP address of the Active PXM should also be different than the bootChange IP address of
the Standby PXM. The bootChange IP address is active only when the PXM is in the boot mode or when the
PXM is in the Standby mode and is used to load firmware and boot code directly into the PXM. Refer to
Bringing up the PXM with no runtime firmware for more information. Once the PXM is booted up, the
cnfifip IP address is active. The bootChange gateway address specifies the next hop that allows the shelf to
communicate with a laptop (PC) or Cisco WAN Manager (CWM) station on a different LAN segment while
the MGX 8850 is in the boot mode. To view the bootChange IP address of the PXM when the MGX 8850
shelf is using runtime firmware, issue the version command.

sj_core.1.7.PXM.a > bootChange

'.' = clear field;  '−' = go to previous field;  ^D = quit 

boot device          : lnPci 

processor number     : 0 

host name            : solwandbg1 

file name            : 

inet on backplane (b): 

host inet (h)        : 

user (u)             : autoprog 

ftp password (pw) (blank = use rsh): 

flags (f)            : 0x0 

target name (tn)     : pxm−7 

startup script (s)   : 

other (o)            :