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Cisco Bug: CSCvj14126 - 8.8:Prefix 64 not accepted but silently return, "Unsupported IPv6 Prefix Length" 0 but show up

Last Modified

Jul 16, 2018

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

8.8(1.112)

Description (partial)

Symptom:
(tb30-khanda-70) >config ap static-IP enable 1542E4-MAP1.93E0 2000:130:53:0:4e77:6dff:fef2:93e0 64 fe80:130:53::1

Changing the AP's IP address will cause the AP to disjoin.
Are you sure you want to continue? (y/n) n


AP IP address not changed!
(tb30-khanda-70) >config ap static-IP enable 1542E4-MAP1.93E0 2000:130:53:0:4e77:6dff:fef2:93e0 ?                
               
<IP netmask/prefix length> Enter the Cisco AP IPv6 prefix length
               
(tb30-khanda-70) >config ap static-IP enable 1542E4-MAP1.93E0 2000:130:53:0:4e77:6dff:fef2:93e0 9999999999 fe80:130:53::1

 ERROR! IPv6 Prefix Length must be in the range 1 through 128.

(tb30-khanda-70) >

(tb30-khanda-70) >config ap static-IP enable 1542E4-MAP1.93E0 2000:130:53:0:4e77:6dff:fef2:93e0 0 fe80:130:53::1         
 ERROR! IPv6 Prefix Length must be in the range 1 through 128.

(tb30-khanda-70) >

But on GUI:
Issue 1, when 64 provisioned for prefix, the UI doesn't accept it but back to the original config.
Issue 2, 0 is default from DHCP to static, or after provision 64 on CLI successfully. It provision it, "Request failed - Unsupported IPv6 Prefix Length" popped up. It needs to alignment to the CLI for better clarification.
Issue 3, invalid prefix length such as 9999999, the UI silently back without according error.

Conditions:
na
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