Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Instrukcja Użytkownika Strona 395

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841
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
Workaround: There is no workaround.
CSCsu50118
Symptoms: More convergence time seen even with the carrier-delay msec 0 command configured.
Conditions: Occurs when carrier-delay msec 0 is configured on a gigabit interface.
Workaround: If excessive convergence time is observed even with the carrier-delay msec 0
command configured, enter the command again on the interface.
CSCsu51095
Symptoms: If connected routes are optimized using PfR, there will be a routing loop.
Conditions: This symptom can occur if, for some reason, PfR is learning connected routes or if the
user has configured them.
Workaround: Create an oer-map with a prefix-list that contains the prefixes with the IP addresses of
the connected routes (the next hops). Set the set observe mode in the oer-map.
CSCsu51245
Symptoms: Port-channel QinQ subinterface on ESM20 and SIP600 line cards do not pass traffic
after router reload and line card reset.
Conditions: This condition is seen after router reload or member link line card reset. This is not seen
when configuration is newly applied.
Workaround: To recover from the condition, perform a shut/no shut on the port channel main
interface.
CSCsu55883
Symptoms: With MLPPP configured on OSM, the following symptoms may be observed:
1. Line card might crash.
2. Links might flap.
3. Following error message from line card might be seen:
"SLOT 9: Sep 14 13:48:48.479 CDT: %COMMON_FIB-3-FIBIDBINCONS2: An internal software
error occurred. Multilink1 linked to wrong idb R11_Mu1"
Conditions: Occurs on routers running various Cisco IOS Release 12.2SR releases. Performing a
shut/no shut on the OSM (especially on the card containing MLPPP) interfaces might trigger this
issue.
Workaround: There is no workaround.
CSCsu57331
Symptoms: In a Virtual Private LAN Services (VPLS) scenario with ESM20 as core facing interface,
imposition traffic might fail.
Conditions: Occurs only when ports from Bay 1 are used as core facing interface.
Workaround: Reset the line card.
CSCsu57958
Symptoms: In a scenario where a Catalyst 6500 or Cisco 7600 performs DHCP snooping + DAI
functionality and a second device acts as DHCP relay, it was observed that DHCP snooping database
was not populated. DHCP snooping is configured in this case on the ingress VLAN (traffic from the
DHCP clients) and the DHCP server can be reached on a different egress VLAN (DHCP requests
are routed).
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