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8.8

Difference between etherchannel "ON", LACP and PAGP

Asked by Dragon0x40 in Network Switches & Hubs

Tags: Netapp Cisco Catalyst 6513 CAT OS

I need to hook up a Netapp FAS3170 to a Cisco Catalyst 6513 running CAT OS using a two port etherchannel. A similar etherchannel is already configured on the switch but I have questions about whether this is the best way to configure it.

Current config of the working etherchannel between a Netapp NAS and Cisco Cat switch:

set port channel 3/13-14 mode on
set port channel 3/13-14 296
set port flowcontrol    3/13-14 receive desired
clear trunk 3/13 1006-1023
clear trunk 3/14 1006-1023
set trunk 3/13 auto negotiate 1-1005,1024-4094
set trunk 3/14 auto negotiate 1-1005,1024-4094

Is this the best way to hook up to the Netapp?

Should LACP be enabled?

If LACP is enabled on the switch or blade will the mode "on" work differently? Or is on the same whether LACP is enabled or not? One reason I ask is the channel is listed under PAGP in the following show command.

> (enable) sh port channel all

PAGP Channels:
Port  Status     Channel              Admin Ch
                 Mode                 Group Id
----- ---------- -------------------- ----- -----
 1/1  connected  on                     191  1666
 1/2  connected  on                     191  1666
----- ---------- -------------------- ----- -----
 2/1  connected  on                     695  1698
 2/2  connected  on                     695  1698
----- ---------- -------------------- ----- -----
 3/13 connected  on                     296  1736
 3/14 connected  on                     296  1736

Port  Device-ID                       Port-ID                   Platform
----- ------------------------------- ------------------------- ----------------
 1/1  SCA05020EST(xxx)                 5/5                       WS-C6509
 1/2  SCA05020EST(xxx)                 5/6                       WS-C6509
----- ------------------------------- ------------------------- ----------------
 2/1  SCA05020ESS(xxx)                 5/5                       WS-C6509
 2/2  SCA05020ESS(xxx)                 5/6                       WS-C6509
----- ------------------------------- ------------------------- ----------------
 3/13
 3/14

LACP Channels:
No ports channelling



> (enable) sh port 3/13
* = Configured MAC Address

# = 802.1X Authenticated Port Name.

Port  Name                 Status     Vlan       Duplex Speed       Type
----- -------------------- ---------- ---------- ------ ----------- ------------
 3/13 nas                  connected  73           full        1000 1000BaseSX

Port  Security Violation Shutdown-Time Age-Time Max-Addr Trap     IfIndex
----- -------- --------- ------------- -------- -------- -------- -------
 3/13 disabled  shutdown             0        0        1  enabled      40

Port  Flooding on Address Limit Last-Src-Addr     Vlan
----- ------------------------- ----------------- ----
 3/13                   Enabled                 -    -

Port  Num-Addr Secure-Src-Addr     Vlan Age-Left Shutdown/Time-Left
----- -------- -----------------   ---- -------- ------------------
 3/13        0                 -      -        -        -         -

Port  802.1X Auth-State   802.1X Port-Status
----- ------------------  ------------------
 3/13 force-authorized    authorized

Port  Mac-Auth-Bypass State  Mac-Auth-Bypass Port-Status
----- ---------------------  ---------------------------
 3/13 Disabled               (null)

Port     Broadcast-Limit Multicast Unicast Total-Drop           Action
-------- --------------- --------- ------- -------------------- ------------
 3/13                  -         -       -                    0 drop-packets

Port  Send FlowControl  Receive FlowControl   RxPause    TxPause
      admin    oper     admin     oper
----- -------- -------- --------- ---------   ---------- ----------
 3/13 desired  on       desired   on          0          4350

Port  Status       Channel              Admin  Ch
                          Mode                  Group   Id
----- ---------- -------------------- ----- -----
 3/13 connected  on                     296  1736
 3/14 connected  on                     296  1736
----- ---------- -------------------- ----- -----

Port  Status      ErrDisable Reason    Port ErrDisableTimeout  Action on Timeout
----  ----------  -------------------  ----------------------  -----------------
 3/13 connected                     -  Enable                  No Change

Port  Align-Err  FCS-Err    Xmit-Err   Rcv-Err    UnderSize
----- ---------- ---------- ---------- ---------- ---------
 3/13          0          0          0          0         0

Port  Single-Col Multi-Coll Late-Coll  Excess-Col Carri-Sen Runts     Giants
----- ---------- ---------- ---------- ---------- --------- --------- ---------
 3/13          0          0          0          0         0         0         0

Port  Last-Time-Cleared
----- --------------------------
 3/13 Mon Oct 20 2008, 08:54:08

> (enable)  sh channel group 296
Admin Port  Status     Channel              Channel
group                          Mode                  id
----- ----- ---------- -------------------- --------
  296  3/13 connected  on                       1736
  296  3/14 connected  on                       1736

Admin Port  Device-ID                       Port-ID                   Platform
group
----- ----- ------------------------------- ------------------------- ----------
  296  3/13
  296  3/14

Thanks for any help.
 
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Tags: Netapp Cisco Catalyst 6513 CAT OS
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