Cisco OL-4015-08 Manual de usuario descargar pdf (Pagina 362)

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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(32)S

Flag FIB switching running set to yes

+3d04h CPUHOG -4ms XDRtyp 69=TFIB_FRR_UNPROTECT_TRANSIT len=15

Hex:020001F40000000400000000

Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.0(31)S.

Workaround: There is no workaround.

• CSCsb36081

Symptoms: An MFR link flaps when you remove and add a VLAN interface back on an SPA that is

installed in an SPA Interface Processors (SIP).

Conditions: This symptom is observed on a Cisco 12000 series that is configured with a

channelized T3 (to DS0) SPA that has both VLANS and an MFR configuration with Frame Relay

subinterfaces. The SPA is installed in a SIP-400.

Workaround: There is no workaround.

• CSCsb39165

Symptoms: A Cisco router may report high CPU usage and memory depletion under a specific

MPLS VPN configuration with static routes.

Conditions: This symptom is observed when equal cost static routes to a subnet point to a next hop

address and there is a summary route that covers one of the next hops pointing to Null0.

If the directly connected route to the next hop is terminated because the interface goes down, the

original route recurses to Null0 while the route recursing through the interface that is still up remains

in the routing table. The end result is that the route now points to both Null0 and to a valid interface

that is up, causing an MPLS recursion problem that results in high CPU usage and memory

depletion.

The following is an example configuration:

ip route a.a.a.a b.b.b.b y.y.y.y

ip route a.a.a.a b.b.b.b z.z.z.z

ip route y.y.y.y mask Null0

If the directly connected route y.y.y.y is removed the a/b subnet recurses through the y.y.y.y/mask

route to Null0.

Workaround: Use routes that point to both a next hop and an egress interface, as in the following

example:

ip route a.a.a.a b.b.b.b interfaceY y.y.y.y

ip route a.a.a.a b.b.b.b interfaceZ z.z.z.z

Workaround: There is no workaround.

• CSCsb41367

Symptoms: When you enter the redundancy force-switchover command, an Engine 4 line card may

crash.

Conditions: This symptom is observed on a Cisco 12000 series that runs the c12kprp-p-mz

Cisco IOS software image and that has two RPs that function in SSO mode.

Workaround: There is no workaround.

• CSCsb42176

Symptoms: A Cisco 7200 series may pause indefinitely when a neighbor reloads.

Conditions: This symptom is observed on a Cisco 7200 series that is configured with a

PA-POS-2OC3 port adapter.

Workaround: There is no workaround.

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