Field Notice: FN74293 - Some Cisco Network Convergence System 57C1 Series Routers May Show Link Down on Some Ports When Configured for 1G Speed - Software Upgrade Recommended

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Updated:July 14, 2025
Document ID:FN74293

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High
Impact Rating:
High
First Published:
2025-Jul-14
Last Published:
2025-Jul-14
Revision:
1.0
Cisco Bug IDs:

Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Products Affected


Affected Product Name Description Comments
NCS-57C1-48Q6-SYS NCS 57C1 Base Chassis, Flexible Consumption Need Smart Lic  
NCS-57C1-48Q6D-S NCS 57C1 Base Chassis, Fixed ports - 32X25G, 16X50G & 6X400  




Defect Information


Defect IDHeadline
CSCwn97632PHY Retimer Device Firmware Integrate to v1.5.9

Problem Description


Some Cisco Network Convergence System 57C1 Series Routers may be unable to establish a link on certain random 1G ports. This impact may be observed if the router is running a release of Cisco IOS XR Software earlier than Release 25.1.1.


Background


Cisco analyzed the failed units from the field, and the error was attributed to a setting in the 1G port re-timer, which was not set within the optimal range. This led to the port exhibiting a link down condition.


Problem Symptom


If the show ipv4 interface brief command output shows the Gigabit Ethernet Down status as Down, as shown in the following example, check the How to Identify Affected Products section of this Field Notice to confirm whether you are impacted: 

RP/0/RP0/CPU0:ios#show ipv4 interface brief 
Interface                      IP-Address      Status          Protocol Vrf-Name
ash-eq2-ncs-8                  XX.XX.XXX.XX    Down            Down     default 
chi-eq2-ncs-2                  XX.XX.XXX.XX    Down            Down     default 
Loopback0                      XX.XX.XXX.XX    Up              Up       default 
HundredGigE0/0/0/3             unassigned      Shutdown        Down     default 
HundredGigE0/0/0/4             unassigned      Shutdown        Down     default >
FourHundredGigE0/0/0/5         unassigned      Shutdown        Down     default 
TenGigE0/0/0/6                 unassigned      Shutdown        Down     default 
TenGigE0/0/0/7                 unassigned      Shutdown        Down     default 
TenGigE0/0/0/8                 unassigned      Shutdown        Down     default 
TenGigE0/0/0/9                 unassigned      Shutdown        Down     default 
TenGigE0/0/0/10                unassigned      Shutdown        Down     default 
TenGigE0/0/0/11                unassigned      Shutdown        Down     default 
TenGigE0/0/0/12                unassigned      Shutdown        Down     default 
TenGigE0/0/0/13                unassigned      Shutdown        Down     default 
TenGigE0/0/0/14                unassigned      Shutdown        Down     default 
TenGigE0/0/0/15                unassigned      Shutdown        Down     default 
TenGigE0/0/0/16                unassigned      Shutdown        Down     default 
TenGigE0/0/0/17                unassigned      Shutdown        Down     default 
TenGigE0/0/0/18                unassigned      Shutdown        Down     default 
TenGigE0/0/0/19                unassigned      Shutdown        Down     default 
TenGigE0/0/0/20                unassigned      Shutdown        Down     default 
TenGigE0/0/0/21                unassigned      Shutdown        Down     default 
TenGigE0/0/0/22                unassigned      Shutdown        Down     default 
TenGigE0/0/0/23                unassigned      Shutdown        Down     default 
TenGigE0/0/0/24                unassigned      Shutdown        Down     default 
TenGigE0/0/0/25                unassigned      Shutdown        Down     default 
TenGigE0/0/0/26                unassigned      Shutdown        Down     default 
TenGigE0/0/0/27                unassigned      Shutdown        Down     default 
TenGigE0/0/0/28                unassigned      Shutdown        Down     default 
TenGigE0/0/0/29                unassigned      Shutdown        Down     default 
TenGigE0/0/0/30                unassigned      Shutdown        Down     default 
TenGigE0/0/0/31                unassigned      Shutdown        Down     default 
TenGigE0/0/0/32                unassigned      Shutdown        Down     default 
TenGigE0/0/0/33                unassigned      Shutdown        Down     default 
TenGigE0/0/0/34                unassigned      Shutdown        Down     default 
TenGigE0/0/0/35                unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/36         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/37         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/38         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/39         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/40         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/41         unassigned      Shutdown        Down     default 
GigabitEthernet0/0/0/42        unassigned      Down            Down     default 
GigabitEthernet0/0/0/43        unassigned      Down            Down     default 
GigabitEthernet0/0/0/44        unassigned      Shutdown        Down     default 
GigabitEthernet0/0/0/45        unassigned      Shutdown        Down     default 
GigabitEthernet0/0/0/46        unassigned      Shutdown        Down     default 
GigabitEthernet0/0/0/47        unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/48         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/49         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/50         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/51         unassigned      Shutdown        Down     default 
TwentyFiveGigE0/0/0/52         unassigned      Shutdown        Down     default 
GigabitEthernet0/0/0/53        unassigned      Down            Down     default 
GigabitEthernet0/0/0/XX.XXX    XX.X.X.XX       Down            Down     ipsla   
GigabitEthernet0/0/0/XX.XXXX   unassigned      Down            Down     default 
GigabitEthernet0/0/0/XX.XXXX   unassigned      Down            Down     default 
HundredGigE0/0/0/0/0           unassigned      Shutdown        Down     default 
HundredGigE0/0/0/0/1           unassigned      Shutdown        Down     default 
HundredGigE0/0/0/1/0           unassigned      Shutdown        Down     default 
HundredGigE0/0/0/1/1           unassigned      Shutdown        Down     default 
HundredGigE0/0/0/2/0           unassigned      Shutdown        Down     default 
HundredGigE0/0/0/2/1           unassigned      Shutdown        Down     default 
MgmtEth0/RP0/CPU0/0            XX.X.XXX.X      Up              Up       management

Workaround/Solution


Solution

To determine if a product is affected, see the How to identify Affected Products section of this Field Notice. If the device output does not match the output in that section, upgrade to Cisco IOS XR Software Release 25.1.1, which is the fixed release. If you are running a release that is older than the fixed release, you may choose to install an SMU (Software Maintenance Upgrade) as shown in the following table:

Cisco IOS XR Release SMU SMU Type
IOS XR Release 7.10.2
 ncs5700-7.10.2.CSCwn97632.tar Reload
IOS XR Release 7.11.21 ncs5700-7.11.21.CSCwn97632.tar Reload
IOS XR Release 24.2.21 ncs5700-24.2.21.CSCwn97632.tar Reload
IOS XR Release 24.4.2 ncs5700-24.4.2.CSCwn97632.tar Reload

Customers with devices that are affected as shown in the How to Identify Affected Products section of this Field Notice and that are running a Cisco IOS XR Software release that does not have an SMU for CSCwn97632 may request an SMU. To do so, open a case with the Cisco Technical Assistance Center (TAC) and share your preferred IOS XR Release.


How to Identify Affected Products


To check which firmware version is running on the Cisco NCS 57C1 Series Routers, run the following command. If the output command shows a value of 0x010509 or higher, as shown in the following example, an update is not needed. 

RP/0/RP0/CPU0:ios#show optics-driver trace driver all location 0/RP0/CPU0 | i "FW ver"   

Jun 26
04:18:34.248:04.18.34.248434134:5442:2361738944:src/dev_crt55321_sdk_intf.c:643:dev_crt55321_sdk_intf_device_init:Slice 1 FW ver: 0x010509, err: 0   ,

If the output command shows a value that is lower than 0x010509, implement the fix that is detailed in the Workaround/Solution section of this Field Notice.


Revision History


VersionDescriptionSectionDate
1.0Initial Release—2025-JUL-14

For More Information

For further assistance or for more information about this field notice, contact the Cisco Technical Assistance Center (TAC) using one of the following methods:

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