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Cisco Bug: CSCvs39510 - Tracebacks seen with TCP options configured

Last Modified

Jan 20, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

15.6(1.4)

Description (partial)

Symptom:
Tracebacks

<189>Dec  1 06:49:40 10.240.4.133 4254: *Dec  1 06:49:39.528 NZDT: %BGP-5-ADJCHANGE: neighbor 122.56.46.35 vpn vrf B_TRNFLD Up 
<190>Dec  1 06:49:44 10.240.4.133 4279: -Traceback= 1#36013921c1c538cb215f0d14f6f79dbe  :7F694F297000+886F239 :7F694F297000+886E33C :7F694F297000+8869298 :7F694F297000+886BC71 :7F694F297000+884973A :7F694F297000+7FE7431 :7F694F297000+E8880D3 :7F694F297000+E887E3C :7F694F297000+E882F48 :7F694F297000+E882E85
<190>Dec  1 06:49:44 10.240.4.133 4278: *Dec  1 06:49:44.078 NZDT: %TCP-6-TOOBIG: Tty0, too many bytes of options (44) -Process= "IOSXE-RP Punt Service Process", ipl= 0, pid= 113
<190>Dec  1 06:49:44 10.240.4.133 4277: -Traceback= 1#36013921c1c538cb215f0d14f6f79dbe  :7F694F297000+886F239 :7F694F297000+886E33C :7F694F297000+8869298 :7F694F297000+886BC71 :7F694F297000+884973A :7F694F297000+7FE7431 :7F694F297000+E8880D3 :7F694F297000+E887E3C :7F694F297000+E882F48 :7F694F297000+E882E85
<190>Dec  1 06:49:44 10.240.4.133 4276: *Dec  1 06:49:42.997 NZDT: %TCP-6-TOOBIG: Tty0, too many bytes of options (44) -Process= "IO

Conditions:
Globally configured.

ip tcp selective-ack
ip tcp timestamp
ip tcp window-size 131072
ip tcp path-mtu-discovery
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