Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Uživatelský manuál Strana 173

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619
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
CSCsx09736
Symptoms: DHCP failed to get binding under IP as aggregation model with L2 access.
Conditions: Occurs with IP session with L2 access on a device configured for DHCP relay and VRF
transfer.
Workaround: There is no workaround.
CSCsx11776
Symptoms: Executing the commands show ip /jointfilesconvert/422273/bgp version recent 1 or show ip /jointfilesconvert/422273/bgp version 1 from
EXEC mode may cause the device to crash.
Conditions: The symptom is observed in affected images that have support for BGP.
Workaround: Use AAA command authorization to prevent the use of these commands.
Further Problem Description: A note regarding BGP Looking Glasses for IPv4/IPv6, Traceroute &
BGP Route Servers:
Per http://www./jointfilesconvert/422273/bgp4.as/looking-glasses, BGP Looking Glass servers are computers on the Internet
running one of a variety of publicly available Looking Glass software implementations. A Looking
Glass server (or LG server) is accessed remotely for the purpose of viewing routing info. Essentially,
the server acts as a limited, read-only portal to routers of whatever organization is running the lg
server. Typically, publicly accessible looking glass servers are run by ISPs or NOCs.
Public Looking Glass servers running an affected version of Cisco IOS are specially susceptible to
this bug because they provide unauthenticated public access to Cisco IOS devices. Because of this,
operators of BGP Looking Glass servers are encouraged to use AAA to prevent execution of the
commands mentioned above that are known to crash Cisco IOS.
CSCsx15841
Symptoms: The BGP aggregate-address command configured on active RP does not auto-sync to
the running configuration of the standby RP.
Conditions: Occurs when BGP is configured on active/standby redundant RP system.
Workaround: Configure BGP aggregate-address and reboot the system, forcing both active and
standby to load from startup configuration.
CSCsx17619
Symptoms: Connectivity between the multilink bundles is lost.
Conditions: Occurs upon configuration of DLFI over ATM and trying to clear the virtual-access
created for multilink using the clear ppp interface virtual-access<no> command.
Workaround: There is no workaround.
CSCsx18270
Symptoms: Admin tag is being advertised by the neighbor router. This tag is not showing up in the
local router. This causes route filtering based on admin tag to fail.
Condition: Occurred on a Cisco ASR1000 running Cisco IOS Release 12.2(33)XNB. Other devices
and releases of Cisco IOS are affected.
Workaround: There is no workaround.
CSCsx20147
Symptoms: The delay value to destination computed is different between IPv4 and IPv6.
Conditions: Occurs when EIGRP for IPv6 is configured.
Workaround: There is no workaround.
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