Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario descargar pdf (Pagina 34)

480

Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8

OL-10394-05 Rev. R0

• CSCth02725

Symptoms: There is an interoperability issue between a third-party vendor’s routers and Cisco

routers with severe IPTV service failure in Prune-Overriding environment.

Conditions: The symptom is observed in the following scenario:

1. Router A is Cisco 7609 router (IP address 10.1.1.1) and connects to Router B (third-party

vendor’s router; IP address 10.1.1.3) and Router C (IP address 10.1.1.2).

2. If subscriber under Router C disappears, Router A receives “Prune” message from Router C.

3. Router A does not change “source IP of PruneEcho message (10.1.1.2)” and sends it to Router

4. At this time, Router B should send overriding-join to Router A because Router B still has

subscribers. But Router B drops the PruneEcho message because source IP (10.1.1.2) is not

from PIM neighbor. Router B cannot send overriding-join to Router A.

5. As a result, multicast traffic (IPTV stream) to Router B stops.

Workaround: Connect C and B to become PIM neighbors. However, this cannot always be

considered a recommended workaround because of potential high cost and/or other (sometimes

third-party) limitations.

• CSCth15790

Symptoms: ES+ low-queue line card crashes with HQoS policy applied.

Conditions: The symptom is observed with an HQoS policy and with three-level HQoS and classes

containing “priority” statements for either priority level1 or level2. When traffic passed through

either of the PQ classes the line card may crash after some random period of time.

Workaround: There is no workaround.

• CSCth18571

Symptoms: An ES+ module may reload when a SPAN session is configured for a source VLAN.

Conditions: The symptom is observed with a Cisco 7600 ES+ and with Cisco IOS

Release 12.2(33)SRD4. VFI configuration needs to be present.

Workaround: There is no workaround.

• CSCth33500

Symptoms: NAS port is reported as zero on LNS.

Conditions: This symptom occurs when “vpdn aaa attribute nas-port vpdn-nas” is configured.

Workaround: There is no workaround.

• CSCth46888

Symptoms: When ARP entry is refreshed due to timeout or execute clear arp command, router

sends ARP request for cached MAC address. However, request message does not use virtual MAC

for Source (Sender) MAC.

Conditions: This symptom occurs when the router is VRRP master, and VRRP IP is configured the

same as the interface IP.

Workaround: There is no workaround.

• CSCth55383

Symptoms: When entering the show tech command on RP, the line card with DFC may display

SWITCH_BUS_IDLE message.

Conditions: This symptom occurs when entering the show tech command on RP.

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Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario Pagina 34

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