Cisco OL-4015-08 Bedienungsanleitung PDF herunterladen (Seite 624)

100

101

976

Cross-Platform Release Notes for Cisco IOS Release 12.0S

OL-1617-14 Rev. Q0

Caveats

Resolved Caveats—Cisco IOS Release 12.0(30)S

• CSCee16725

Symptoms: MPLS VPN VRF labels fail to be updated onto core-facing line cards such that the VPN

traffic entering the core-facing line cards is punted to the RP.

Conditions: This symptom is observed in a setup with two parallel paths between a PE router and a

CE router that run Cisco IOS Release 12.0 S. There are around 10,000 VRF routes advertised

through both the eBGP sessions that are established between the PE router and the CE router. When

the link flaps, the next hop of all the BGP routes changes to the next hop via the other link. When

this situation occurs, the core-facing line cards may miss the label forwarding entry for some of the

VPN prefixes.

Workaround: To recover from the problem after it has occurred, enter the clear cef linecard

command on the affected core-facing line card.

To avoid the problem from occurring, do not redistribute the PE-CE link subnet into BGP.

• CSCee16950

Symptoms: IPv6 traffic forwarding on an Engine 2 DPT line card is performed by the CPU of the

line card; IS-IS, OSPFv2 or OSPFv3 adjacencies, or BGP neighbourships across any of the

interfaces of the Engine 2 DPT line card may fail.

Conditions: This symptom is observed when oversubscribing the CPU of the Engine 2 DPT line card

in terms of its maximum IPv6 packet-per-second forwarding rate, which is about 100 Kpps.

Workaround: There is no workaround. The symptom does not occur for POS and GE Engine 2 line

cards.

• CSCee18844

Symptoms: Traffic forwarding problems may occur when sending MVPN traffic from multiple

sources to the same group.

Conditions: This symptom is observed on a Cisco 12000 series that functions as an MVPN

decapsulation PE router with an Engine 3 line card that forwards multicast packets on an VRF

interface.

Workaround: To ensure that no collisions occur on the VRF interface, configure hardware multicast

on the Engine 3 line card by entering the hw-module slot number ip multicast hw-accelerate

source-table size x offset y command.

• CSCee18883

Symptoms: All VIPs in a Cisco 7500 series restart as a consequence of a Cbus complex that is

triggered by a stuck output. Just before the output becomes stuck, IPC timeout errors occur.

Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS Release 12.3(5)

in a dLFIoATM environment. The symptom may also occur in other releases.

Workaround: There is no workaround.

• CSCee18889

Symptoms: If link bundling is configured on any line card in the router and the link bundle is loaded

onto an Engine 2 line card that has VPN on FR subinterfaces and that is processing traffic, the

Engine 2 line card may reload.

Conditions: This symptom is observed on a Cisco 12000 series that is running the gsr-p-mz image

of Cisco IOS Release 12.0(28)S.

Workaround: There is no workaround.

1 2 ... 619 620 621 622 623 624 625 626 627 628 629 ... 677 678

Kommentare zu diesen Handbüchern

Keine Kommentare

Cisco OL-4015-08 Bedienungsanleitung Seite 624

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Cisco OL-4015-08