Cisco Cisco IOS Software Release 12.4(4)T
714
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(15)T15
Workaround: There is no workaround.
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CSCsz07103
Symptoms: A router crashes at nvgen_action when 500 IPSec tunnels are configured and the write
memory command is issued.
memory command is issued.
Conditions: This symptom is observed when 500 IPSec tunnels are configured and the write
memory command is issued. The problem might be a scalability issue.
memory command is issued. The problem might be a scalability issue.
Workaround: There is no workaround.
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CSCta38476
Symptoms: When removing the tunnel interface with CDP enabled, tracebacks are generated. CDP
does not come up in all interfaces.
does not come up in all interfaces.
Conditions: The symptom is observed with large numbers of CDP neighbors in an MCP router.
Workaround: Disable CDP before deleting the tunnel interface.
Further Problem Description: CDP tries to send a packet over a deleted tunnel interface causing the
issue.
issue.
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CSCta95295
Symptoms: A Cisco router terminates 100+ VPN tunnels when using CRL checking for the Phase 1
authentication.
authentication.
Conditions: If IKE gets stuck for any reason, it might cause IOMEM to be depleted completely,
which could lead to a router crash.
which could lead to a router crash.
Workaround: Disable CRL checking or use pre-shared keys.
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CSCtb17152
Symptoms: A large packet drop may occur when FRF.12 is enabled.
Conditions: This symptom is observed when FRF.12 is enabled.
Workaround: There is no workaround.
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CSCtb34358
Symptoms: Tunnel sources get mixed up when tunnel interfaces are configured with serial
subinterfaces as sources and the router is reloaded.
subinterfaces as sources and the router is reloaded.
Conditions: The symptom occurs only after a reload or when a saved configuration is applied to the
running configuration.
running configuration.
Workaround: There is no workaround.
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CSCtc06935
Symptoms:
Packet loss occurs between two Cisco 3200 MAR routers that are connected over FESMIC Fast
Ethernet ports via wireless radios after upgrading to Cisco IOS Release 12.4(22)T2.
Ethernet ports via wireless radios after upgrading to Cisco IOS Release 12.4(22)T2.
Conditions: The symptom is observed under the following conditions:
–
After a code upgrade.
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On Cisco 3200 routers that are connected via wireless radios.
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It does not occur on devices directly connected via fiber.
Workaround: Use Cisco IOS Release 12.4(1a).