Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Uživatelský manuál stáhnout pdf (Strana 314)

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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 when a router without DC capability is removed from a DC

enabled area.

Workaround: Use the clear ip ospf command.

• CSCsm51299

Symptoms: CSCsl27236 did not catch all of the areas needed to be fixed due to code divergence.

Conditions: The symptoms can be observed under stress conditions and when ipsec-isakmp is

enabled.

Workaround: There is no workaround.

• CSCsm51333

Symptoms: Incorrect classification occurs when a policy-map with MIV matching on an input

VLAN and another class-map matching on multiple input VLANs where one of them match on the

VLAN already present in the other class. The overlapping class matches the input VLAN for which

a class-map is already exclusively defined.

Conditions: The policy-map needs to have two classes where some of the match input VLANs

should overlap. This policy-map is applied in output direction on the core facing interface on an

Ethernet Over MPLS (EoMPLS) setup.

Workaround: There is no workaround.

• CSCsm51729

Symptoms: After a router has been running continuously for more than 7 weeks, the last update time

for routes in the routing table will be shown as "7w0d" when the route has recently been updated.

For example:

router#show ip route 192.168.116.152

Routing entry for 192.168.116.152/30 Known via "rip", distance 120, metric 1

Redistributing via /jointfilesconvert/422273/bgp 6747, rip Advertised by /jointfilesconvert/422273/bgp 6747 Last update from

192.168.117.154 on GigabitEthernet2/5.2583, 7w0d ago Routing Descriptor Blocks: *

192.168.117.154, from 192.168.117.154, 7w0d ago, via GigabitEthernet2/5.2583 Route

metric is 1, traffic share count is 1

The following traceback may also be seen:

Jan 4 10:42:33.357 ROUTER: %IPRT-3-NDB_STATE_ERROR: NDB state error (BAD EVENT STATE)

(0x00) 192.168.116.152/30, state 7, event 2->1, nh_type 1 flags 4 -Process= "RIP

Router", ipl= 0, pid= 494

If the traceback is seen, the updated route will no longer be visible in the forwarding plane and will

not be redistributed.

Conditions: The router must be running continuously for 7 weeks.

Conditions for the traceback to occur: -Router must be running continuously for at least 7 weeks.

-A distance vector protocol is being used (e.g. RIP), and the route goes into holddown state and then

comes out of holddown before the flushtimer has expired.

Workaround: In the event of traceback, the route can be restored by doing the following:

clear ip route 192.168.116.152

The clear will NOT correct the update time on the routes, which will still be seen as 7w0d. The latter

condition can only be cleared by either:

1)Rebooting the router 2)If redundant RPs are present, reboot the Standby RP, achieve SSO state,

and force a switchover.

Either technique will provide another 7 weeks before either of the problems might be encountered

again.

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