Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario descargar pdf (Pagina 369)

815

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

OL-10394-05 Rev. R0

• CSCsq31206

Symptoms: A router that is running in SSO mode can crash when PPPoX sessions are being brought

up with the following messages appearing in crashinfo file and on router console:

%SYS-3-OVERRUN: Block overrun at 7A3280D8 (red zone 00000000) %SYS-6-BLKINFO:

Corrupted redzone blk 7A3280D8, words 2348, alloc 605CAEC8, InUse, dealloc 0, rfcnt 1

Conditions: This symptom occurs when a router that is running in SSO mode may crash when

PPPoX sessions are being brought up. The crash does not occur when local authentication method

is used.

Workaround: There is no workaround.

• CSCsq31808

Symptoms: With eiBGP multipath, incoming labeled packets may get looped in MPLS core instead

of getting forwarded to CE, causing traffic issues. The following symptom may be found:

- The error message below is frequently generated.

Dec 17 07:44:46.734 UTC: %COMMON_FIB-3-BROKER_ENCODE: IPv4 broker failed to encode msg

type 0 for slot(s) 0B -Traceback= 6044E470 60465864 6043BCFC 6043B570

- The debug cef xdr command yields the following message:

Mar 31 17:44:40.576 UTC: FIBrp_xdr: Table IPv4:<vrf name>, building insert event xdr

for x.x.x.x/y. Sources: RIB Mar 31 17:44:40.576 UTC: FIBrp_xdr: Encoding path

extensions ... Mar 31 17:44:40.576 UTC: FIBrp_xdr: - short ext, type 1, index 0 Mar 31

17:44:40.580 UTC: FIBrp_xdr: Getting encode size for IPv4 table broker FIB_FIB xdr Mar

31 17:44:40.580 UTC: - short path ext: len 12 Mar 31 17:44:40.580 UTC: - short path

ext: len 24 Mar 31 17:44:40.580 UTC: - feat IPRM, len 12 Mar 31 17:44:40.580 UTC: =>

pfx/path 113 + path_ext 24 + gsb 8 + fs 16 = 161

- Checking the prefix, it points to drop entry.

router#show mpls forward vrf <vrf name> x.x.x.x Local Outgoing Prefix Bytes Label

Outgoing Next Hop Label Label or VC or Tunnel Id Switched interface 937 No Label

x.x.x.x/y[V] 0 drop <========= it is drop

- Checking the MOI flag of EBGP path, the No_Global flag (0x10) was incorrectly set.

router#show ip cef vrf <vrf name> x.x.x.x int [snip] path_list contains at least one

resolved destination(s). HW not notified path 70BFFC5C, path list 20E87B58, share 1/1,

type recursive nexthop, for IPv4, flags resolved MPLS short path extensions: MOI flags

= 0x16 <-------MOI flags 0x10 is incorrectly set (for e/jointfilesconvert/422273/bgp path, correct flag should

be 0x4, 0x5, 0x6 ..) correct now. [snip]

Conditions: The eiBGP multipath is enabled; iBGP path comes up first , then the eBGP path. Both

eBGP and iBGP paths could be in MPLS forwarding causing the issue.

Workaround: Using the clear ip route vrf <name> x.x.x.x clears the issue.

• CSCsq31923

Symptoms: Crash may occur after polling MPLS-LSR-MIB mplsInterfaceConfTable.

Conditions: MPLS-enabled tunnels exist in configuration and some are removed by doing no int

tunnel<tunnelid>. If mibwalk of any object in mplsInterfaceConfTable is performed after that, this

may result in crash.

Workaround: Remove MPLS configuration on tunnel with the no tunnel mode mpls traffic-eng

command before entering the no int tunnel command.

Further Problem Description: It has been found this problem occurs when tunnel also contains the

following config: tunnel mpls traffic-eng path-option 1 dynamic. Crash occurs only if image

contains fix for CSCsm97259. Will see this message similar to the following before the crash:

Jun 3 11:53:59.955 PDT: %TIB-3-GENERAL: MPLS MIB subblock ifIndex corrupted for

ifIndex: 46 - was: 1198404176; corrected

• CSCsq31958

1 2 ... 364 365 366 367 368 369 370 371 372 373 374 ... 397 398

Comentarios a estos manuales

Sin comentarios

Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario Pagina 369

Comentarios a estos manuales

Relacionado con productos y manuales para Redes Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch