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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(30)S3
• CSCeh34989
Symptoms: One of the following two symptoms may occur on a POS ISE egress line card:
–
The interface may become stuck during transmission. The line protocol will continuously flap
because the interface continues to receive keepalives but is not able to send any keepalives.
–
The line card generates the following harmless error message:
%EE48-4-GULF_TX_SRAM_ERROR: ASIC GULF: TX bad packet header detected. Details=0x4000
Conditions: These symptoms are observed on a Cisco 12000 series when an invalid packet is
forwarded to an egress interface on an ISE line card.
Workaround: If the transmission on the interface is stuck, reload the line card by entering the
hw-module slot x reload command.
• CSCeh36824
Symptoms: When the HA mode is RPR+ and a standby PRE comes up after a crash, the HA mode
may change from RPR+ to SSO and the standby PRE displays error messages that indicate that the
running configuration of the active PRE is “mode rpr-plus” but the running configuration of the
standby PRE is “mode sso.”
When the HA mode is SSO and a standby PRE comes up after a crash, the standby PRE may become
stuck in its initialization and does not enter the “STANDBY_HOT” state.
Conditions: These symptoms are observed on a Cisco 10000 series when the standby PRE crashes
but does not report a switchover (that is, a “standby down” event occurs but not a switchover event),
causing the standby PRE to come up in an inconsistent state. When the standby PRE crashes, the
active PRE shows an error message that includes the text “PEER_CRASH_INTERRUPT.”
Workaround: Reset the standby PRE by entering the hw-module standby-cpu reset command to
enable it to reload and come back up properly.
• CSCeh37351
Symptoms: In a tag switching-to-IP switching scenario with an ISE ingress line card and an
Engine 4 plus (E4+) egress line card, the following bad packets may be forwarded to the E4+ line
card:
–
tag2ip, with bad ip hdr cksum
–
tag2ip, with ip->tl > L2
–
tag2ip, with ip->tl < 20
–
tag2ip, with ip options packets
–
tag2ip, with ip options packets with bad ip hdr cksum
–
tag2ip, with ip options packets with ip->tl > L2
–
tag2ip, with ip options packets with ip->tl < 20
These bad packets cause packet corruption and an “TX192-3-PAM_PIM” error message on the
E4+ line card and may even cause the E4+ line card to reset.
Conditions: This symptom is observed on a Cisco 12000 series.
Workaround: There is no workaround.
Further Problem Description: The fix for this caveat enables the ISE line card to drop the
above-mentioned bad packets.
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