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April 11th, 2011 10:00

Two stacked M6348 with 4 port broadcom nics - Unable to create more than 18 port channels for LACP teams

 

I am trying to create a Hyper-V HA cluster with 10 blades in an m1000 with two m6348 switches on fabric B. I am trying to create two 802.3ad LACP teams on each blade to handle the VLANs required. When I try to configure ports 1/g19, 2/g19 I get the error message below. Am i doing something wrong? Surely I can create LACP teams on more then 9 blades? Any help appreciated.

 

interface ethernet 2/g19

switchport mode general

switchport general acceptable-frame-type tagged-only

switchport general allowed vlan add 20,30 tagged

exit

console(config)#interface eth 2/g19

console(config-if-2/g19)#channel-group 19 mode auto

Unable to convert static Port-channel to Dynamic.

Maximum allowable dynamic Port-channels already present in the system.

 

console#show interfaces port-channel

 

Channel   Ports                         Hash Algorithm Type min-links

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

ch1       Inactive: 1/g1, 2/g1          3                   1

ch2       Inactive: 1/g2, 2/g2          3                   1

ch3       Inactive: 1/g3, 2/g3          3                   1

ch4       Inactive: 1/g4, 2/g4          3                   1

ch5       Inactive: 1/g5, 2/g5          3                   1

ch6       Inactive: 1/g6, 2/g6          3                   1

ch7       Inactive: 1/g7, 2/g7          3                   1

ch8       Inactive: 1/g8, 2/g8          3                   1

ch9       Inactive: 1/g9, 2/g9          3                   1

ch10      Inactive: 1/g10, 2/g10        3                   1

ch11      Inactive: 1/g11, 2/g11        3                   1

ch12      Inactive: 1/g12, 2/g12        3                   1

ch13      Inactive: 1/g13, 2/g13        3                   1

ch14      Inactive: 1/g14, 2/g14        3                   1

ch15      Inactive: 1/g15, 2/g15        3                   1

ch16      Inactive: 1/g16, 2/g16        3                   1

ch17      Inactive: 1/g17, 2/g17        3                   1

ch18      Inactive: 1/g18, 2/g18        3                   1

ch19      No Configured Ports           3                   1

ch20      No Configured Ports           3                   1

--More-- or (q)uit

ch21      No Configured Ports           3                   1

ch22      No Configured Ports           3                   1

ch23      No Configured Ports           3                   1

ch24      No Configured Ports           3                   1

ch25      No Configured Ports           3                   1

ch26      No Configured Ports           3                   1

 

72 Posts

April 12th, 2011 03:00

Hi,

Here is description of M6348:

Link Aggregation with support for up to 48 LAGs total, up to 18 of which can be dynamic, aggregated links, 8 dynamic aggregated links per switch and up to 8 member ports per aggregated link; LACP support (IEEE 802.3ad), LLDP-MED

You can have max 18 LACP port-channels, other must be static (channel-group port-channel-number mode on)

April 12th, 2011 08:00

Yea, I ended up finding that yesterday.  Strange limitation, I wonder why? Anyway not a huge deal to do generic trunking. I was just not associating the dynamic with lacp and generic trunking with static. 

 

Thanks!

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