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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
OL-13208-11
Chapter 14 Removing and Replacing FRUs from the Cisco ASR 1000 Series Routers
Minimum Requirements of eUSB Devices Supported on Cisco ASR 1000 Series Routers
about the presence of an incorrect eUSB device or a eUSB device with less capacity. Earlier, an
additional informational message was not displayed even if the eUSB device was of less capacity for the
RP used on the system.
Corrective Action Required
If the eUSB device is of less capacity and is not compatible as indicated in the Cisco IOS message then
you need to contact Cisco System Inc. and get the eUSB replaced. Prolonged use of routers with less
capacity eUSB devices would result in unpredictable behavior.
New Behavior
From Cisco IOS XE Release 2.3.0 onwards, an additional message is displayed on the auxiliary port and
on the Cisco IOS console port, providing information whether the eUSB device currently used is correct.
For Cisco ASR 1001 Router, this change for eUSB compatibility has been implemented from Cisco IOS
XE Release 2.4.0S onwards. The recommended eUSB devices with the minimum memory capacity for
the RP types compatible are:
Table 14-6
Matrix for eUSB Memory Capacity Support and Route Processor on ASR 1000 Routers
When the system is started, Cisco IOS Software detects the capacity of the eUSB device currently used
on the system. If the eUSB device matches the minimum value of the eUSB capacity as specified above
then no messages are displayed at the Cisco IOS console.
However, an informational message is displayed at the auxiliary port. For example, on a 6RU system, at
the auxiliary port, the following message appears if the eUSB is valid:
....
Checking eUSB capacity information for 6RU:ASR1000-RP1 ... 1003520 KBytes [ OK ]
..
However, when an invalid eUSB device is found, the following messages are displayed at the Cisco IOS
Console:
...
%IOSXEBOOT-4-EUSB_PROVISIONING: (rp/0): Unsupported low capacity eUSB detected in 2RU
board
...
The following message is displayed at the auxiliary port:
...
Checking eUSB capacity information for 2RU:ASR1000-RP-2RU ...
The capacity of the installed eUSB device is insufficient.
It is 1003520 KBytes. The recommended capacity is 8 GByte(s).
Router Type
eUSB Capacity (Gigabytes)
1RU-RP
8
2RU-RP
8
4RU-RP1
1
6RU-RP1
1
13RI-RP1
1 (subject to change)
4RU-RP2
2
6RU-RP2
2
13RU-RP2
2