Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario descargar pdf (Pagina 11)

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

OL-10394-05 Rev. R0

Conditions: The symptom is observed on a Cisco 10000 series router with dual PREs when some

PPP interfaces are up and some are down after a PRE switchover. In addition, the “interface resets”

counter on the problematic interface will increment.

Workaround: Change the encapsulation to HDLC or try issuing the command clear ppp interface.

• CSCsy56433

Symptoms: The sh rommon rp command for the standby intermittently fails to display the correct

information for the ROMMON regions. This issue occurs intermittently and is not easily

reproducible.

Conditions: This issue was also hit during the ROMMON upgrade with Cisco IOS on standby,

although this is not easily reproducible. After selecting F1 as the preferred region on the standby

and resetting it, although ROMMON upgrade was successful as observed on the standby console,

the sh rommon command on the active displays that both regions were invalid.

The following steps provide the details that cause the reported behavior:

1. Upgrade the standby ROMMON F1 region.

2. Upgrade the standby F2 region.

3. The sh rommon command displays that both F1 and F2 are approved, with F2 region as the

preferred region. To choose the F1 as the preferred region, issue upgrade rom slot 8 rp

preference region1.

4. Then issue a HW reset to ensure that F1 region is the preferred region.

5. As expected, the RP boots up with the upgraded ROMMON. Displays that the ROMMON is

running from the F1 region.

6. When the sh rommon slot 8 rp command is issued, instead of displaying F1 and F2 as approved

regions, with F1 also as preferred region, the command displays that both regions are invalid,

but indicates that the ROMMON is running from the F1 region.

Workaround: There is no workaround.

• CSCsy61321

Symptoms: Accounting requests sent to the TAC server do not fail over to the second server.

Conditions: This symptom is observed when two TACACS servers are configured, the first without

TACACS, the second with TACACS, and authentication is configured as “none”.

Workaround: Use a single working server, or ensure that the first group uses a valid server.

• CSCsy83266

Symptoms: A router experiences CPU hog or crashes when doing snmpwalk.

Conditions: This symptom is observed when interfaces are attached with a large-scale police

configuration (for example, a two-level policy map, 200 (parent classes) x 15 (child classes) = 3000

policers).

Workaround: There is no workaround for walking the table. To get a specific entry, use snmpget.

• CSCsy88764

SymptomS: ISG PPPoE sessions may lose their authenticated state if they receive Change of

Authorization (CoA) for service swapping.

Conditions: After sending CoA pushes to deactivate an existing service and active new one to ISG

PPPOE sessions, the sessions may change state from authenticated to connect. It means the sessions

are already in logoff state. As a result, all Subscriber Service Switch (SSS) showings are empty.

Workaround: There is no workaround.

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