Fibre Channel (SAN)

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New Member
Posts: 1
Registered: ‎08-05-2014

Too many ENC out erros on ISL links. Link reset and loss of sync

Too Many erros on ISL links. connected two site aross 142 km approximate.  ISL and RDF connection on different virtual switch. Dark fibre is connected through DWDM.   Is Ls / LD mode? how   to calulate buffer credit if workload varies at different time. SRDF /S and SRDF /A traffic flows through links. SRDF links goes in suspend mode.

SAn1-FAbric A: :FID2:admin> porterrshow
          frames      enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   frjt   fbsy  c3timeout    pcs
       tx     rx      in    err    g_eof  shrt   long   eof     out   c3    fail    sync   sig                 tx    rx    err
136:   34.0k  41.1k   0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
142:   85.0m 138.1m   0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
143:  113.2k  80.1k  13.4k   1      0      0      1      0     13.4k   0      0      0      0      0      0      0      0      0
152:  138.2m  85.2m   0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
159:  100.5k  59.7k   1.0k  11     10      0      0      1     33.1m   2      8     10      0      0      0      0      0      0

***

SAn1-FAbric A:FID2:admin> portbuffershow
User     Port     Lx     Max/Resv  Avg Buffer Usage & FrameSize    Buffer Needed     Link     Remaining
Port     Type    Mode    Buffers        Tx         Rx              Usage  Buffers   Distance  Buffers
----     ----    ----    -------   ----------------------------    ------ -------   --------- ----------
 136       F       -         8       - (  - )      - (  - )           8       -          -
 142       E       -         8       - ( 668)       1(1412)          26      26        <2km
 143       E      LS       222       - (  - )      - (  - )         222     222       142km      5176
---------------------------------------------------------------------------------------------------------
 152       F       -         8        1(1412)      - ( 668)           8       -          -
 159       E      LS       188       - (  - )      - (  - )         188     188         N/A      5228

***

uk_dcn1pc_ssw001_VS2:FID2:admin> portcfgshow 1/31
Area Number:              220
Octet Speed Combo:        1(16G|8G|4G|2G)
Speed Level:              2G
AL_PA Offset 13:          OFF
Trunk Port                ON
Long Distance             LS
VC Link Init              ON
Desired Distance          142 Km
Frame Size                1433 Bytes
Reserved Buffers          222
Locked L_Port             OFF
Locked G_Port             ON
Disabled E_Port           OFF
Locked E_Port             OFF
ISL R_RDY Mode            OFF
RSCN Suppressed           OFF
Persistent Disable        OFF
LOS TOV enable            OFF
NPIV capability           ON
QOS Port                  ON
Port Auto Disable:        OFF
Rate Limit                OFF
EX Port                   OFF
Mirror Port               OFF
Credit Recovery           ON
F_Port Buffers            OFF
Fault Delay:              0(R_A_TOV)
NPIV PP Limit:            126
CSCTL mode:               OFF
D-Port mode:              OFF
D-Port over DWDM:         ON
Compression:              OFF
Encryption:               OFF
FEC:                      ON

Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: Too many ENC out erros on ISL links. Link reset and loss of sync

hi,

 

the switch detects physical errors on ports 143 and 159, you should review the infrastructure between the switchs connected on those ports, starting in the points in common (eg DWDM).

 

rgds

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