🚀 go-pugleaf

Hello,

I've been trying to set up Cisco FEC from a Catalyst 5505 to a server
with a Intel Pro/1000MT Quad port server adapter. The problem is that
Transmit Unicast packets to the server are only utilising one of the 4
links available. Even though data is being transmitted from 20
different servers/mac addresses.

Here is the output from "show channel traffic" (for testing I'm using
only 2 channels)

ChanId Port  Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ ----- ------- ------- ------- ------- ------- -------
   838  3/11  19.68% 100.00%   0.00%  50.00%  23.29%   4.16%
   838  3/12  80.32%   0.00%   0.00%  50.00%  76.71%  95.84%

However data being sent from the server to the clients systems is
being load balanced.

I've configured the switch with the following parameters:

set port channel 3/11-12 151
set port channel 3/11-12 mode on
set port speed   3/11-12 100
set port duplex  3/11-12 full

I've forced full duplex and 100mbps on the Server Adapter and created
a 2 port Fast EtherChannel/Link Aggregation Team using Intel PROSet.
After creating the team and using the test button on the Intel PROSet
application it confirms that the configuration with the switch is
working correctly.

From my understanding provding the source or destination MAC address
is different, load balancing should occur over each link for each
destination source pair. However this ONLY seems to be the case for RX
unicast packets and not for TX unicast packets.

According to the Cisco documenation it is not possible to change the
frame distribution method on a Catalyst 5000 and that the default
method is performed on the source MAC address and the destination MAC
address. Since the source MAC address will always be different
shouldn't it be load balancing?

Can someone please confirm if the behaviour above is what I should be
expecting? The server is set up as a backup server so data is always
being transmitted to the server which is why TX load balancing is more
important for us.

Here are the show port capabilities:

5505-CS0-NET24> sh port capabilities 3/11
Model                    WS-X5225R
Port                     3/11
Type                     10/100BaseTX
Speed                    auto,10,100
Duplex                   half,full
Trunk encap type         802.1Q,ISL
Trunk mode               on,off,desirable,auto,nonegotiate
Channel                  3/11-12,3/9-12
Broadcast suppression    percentage(0-100)
Flow control             receive-(off,on),send-(off,on)
Security                 yes
Dot1x                    yes
Membership               static,dynamic
Fast start               yes
QOS scheduling           rx-(none),tx-(none)
CoS rewrite              yes
ToS rewrite              IP-Precedence
Rewrite                  yes
UDLD                     yes
AuxiliaryVlan            1..1000,untagged,dot1p,none
SPAN                     source,destination

5505-CS0-NET24> (enable) sh port capabilities 3/12
Model                    WS-X5225R
Port                     3/12
Type                     10/100BaseTX
Speed                    auto,10,100
Duplex                   half,full
Trunk encap type         802.1Q,ISL
Trunk mode               on,off,desirable,auto,nonegotiate
Channel                  3/11-12,3/9-12
Broadcast suppression    percentage(0-100)
Flow control             receive-(off,on),send-(off,on)
Security                 yes
Dot1x                    yes
Membership               static,dynamic
Fast start               yes
QOS scheduling           rx-(none),tx-(none)
CoS rewrite              yes
ToS rewrite              IP-Precedence
Rewrite                  yes
UDLD                     yes
AuxiliaryVlan            1..1000,untagged,dot1p,none
SPAN                     source,destination

And Channel Info:

Switch Frame Distribution Method: mac both

Port  Status     Channel              Admin Channel Speed Duplex Vlan
                 mode                 group id
----- ---------- -------------------- ----- ------- ----- ------ ----
 3/11 connected  on                     151     838 100   full    300
 3/12 connected  on                     151     838 100   full    300
----- ---------- -------------------- ----- ------- ----- ------ ----

Port  ifIndex Oper-group Neighbor   Oper-Distribution PortSecurity/
                         Oper-group Method            Dynamic port
----- ------- ---------- ---------- ----------------- -------------
 3/11 98               1            mac both
 3/12 98               1            mac both
----- ------- ---------- ---------- ----------------- -------------

Port  Device-ID                       Port-ID                  
Platform
----- ------------------------------- -------------------------
----------------
 3/11
 3/12
----- ------------------------------- -------------------------
----------------

Port  Trunk-status Trunk-type    Trunk-vlans
----- ------------ -------------
-----------------------------------------------
 3/11 not-trunking negotiate     1-1005
 3/12 not-trunking negotiate     1-1005
----- ------------ -------------
-----------------------------------------------

Port  Portvlancost-vlans
----- --------------------------------------------------------------------------
 3/11
 3/12
----- --------------------------------------------------------------------------

Port  Port     Portfast Port  Port    Port
      priority          Guard vlanpri vlanpri-vlans
----- -------- -------- ----- -------
------------------------------------------
 3/11       32 disabled none        0
 3/12       32 disabled none        0
----- -------- -------- ----- -------
------------------------------------------

Port  Guard type
----- ----------
 3/11       none
 3/12       none
----- ----------

Port  IP       IPX      Group
----- -------- -------- --------
 3/11 on       auto-on  auto-on
 3/12 on       auto-on  auto-on
----- -------- -------- --------

Port  GMRP     GMRP         GMRP
      status   registration forwardAll
----- -------- ------------ ----------
 3/11 enabled  normal       disabled
 3/12 enabled  normal       disabled
----- -------- ------------ ----------

Port  GVRP     GVRP         GVRP
      status   registration applicant
----- -------- ------------ ---------
 3/11 disabled normal       normal
 3/12 disabled normal       normal
----- -------- ------------ ---------

Port  Qos-Tx   Qos-Rx   Qos-Trust    Qos-DefCos
      PortType PortType Type
----- -------- -------- ------------ ----------
 3/11 1q1t     -        untrusted             0 -
 3/12 1q1t     -        untrusted             0 -
----- -------- -------- ------------ ----------

----- -------------------------------- ----

----- -------------

Port  Auxiliaryvlan
----- -------------
 3/11 none
 3/12 none
----- -------------

Port  Jumbo
----- --------
 3/11 disabled
 3/12 disabled
----- --------

Any help would be much appreicated.

Thanks,
Nikolai.