Cisco OL-4015-08 Manual de usuario Pagina 573

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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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