I'm trying to configure a port-channel between two 6807xl chassis, I have got a 40G module and 4x10G in each of them, I would like creating a port-channel between the two devices using that five ports (40+4x10=80G), I create the port-channel but when I try to configure the ports to join the PoCh I get an error. If I configure until 8x10G there is no problem, but if I configure first the 40G port and then the rest of the ports, I only can join 3 more of them and I get the next error:
Router(config-if)#channel-group 250 mode on
Command rejected (Port-channel250, Fo1/1): Channel group limit reached
I guest there is a limitation using 40G and 10G ports, could someone confirm that???
Thank you very much in advance.
40 Gigabit Ethernet Mode
● A maximum of four 40 Gigabit Ethernet links, whether on one module or spread across multiple modules, is allowed in a single EtherChannel.
● This does not affect other modules or EtherChannels in the system.
● This is due to the fact that we need to use some resources for the egress load-balancing between Replication ASICs.
Hope this helps,
Please rate helpful posts.
The basic prerequisite to form the Etherchannel is "All interfaces in each EtherChannel must be the same speed" . As far as i know , you can't mix different link speeds to create a portchannel.
Catalyst 6500/6000 Series Switches That Run Cisco IOS Software
Refer to the support pages for the Catalyst 6500 Series Switches and Catalyst 6000 Series Switches for more information on these switches.
Catalyst 6500/6000 series switches that run Cisco IOS Software support both Layer 2 and Layer 3 EtherChannel. Up to eight compatibly configured Ethernet interfaces can exist on any module. All interfaces in each EtherChannel must be the same speed. All interfaces in each EtherChannel must have a configuration as either Layer 2 or Layer 3 interfaces."
thanks to all for your answers and support, it has been so useful for me.
If you let me, I've got another question. Now, I discard to use a 40G module, instead of that I'm going to use a 4x10G module (CVR-CFP-4SFP10G), but when I insert the card into the module the chassis does not detect it, and it does not show any logg message. I attached photo with the light status, the light in each slot is flashing intermittently.
Could someone say me why the chassis does not recognise the card inserted in the module??
The module is OK:
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
1 20 DCEF2T 4 port 40GE / 16 port 10GE WS-X6904-40G SAL18495HPH
3 5 Supervisor Engine 2T 10GE w/ CTS (Acti VS-SUP2T-10G SAL1913CCR4
4 5 Supervisor Engine 2T 10GE w/ CTS (Hot) VS-SUP2T-10G SAL1914CPKV
5 40 DCEF2T 8 port 40GE / 32 port 10GE C6800-32P10G SAL1910ATD8
6 40 DCEF2T 8 port 40GE / 32 port 10GE C6800-32P10G SAL1910APVN
Mod Online Diag Status
But in the solt 1 the chassis only detects the 40G interfaces:
Router#sh ip int brief
Interface IP-Address OK? Method Status Protocol
Fo1/1 unassigned YES NVRAM administratively down down
Fo1/2 unassigned YES NVRAM administratively down down
Fo1/3 unassigned YES NVRAM administratively down down
Fo1/4 unassigned YES NVRAM administratively down down
GigabitEthernet3/1 unassigned YES NVRAM administratively down down
GigabitEthernet3/2 unassigned YES NVRAM administratively down down
GigabitEthernet3/3 unassigned YES NVRAM administratively down down
It should recognise four 10G interface in slot 1.
Could someone help me with that??
Thank you so much.
the problem is solved. The question was that the module works by default in FortyGb mode, if you want to use the 4x10G card you have to change the operational mode:
I copy and example:
10 Gigabit Ethernet Port Operational Mode
The 10 Gigabit Ethernet mode of operation can be enabled using a configuration command that affects portgroups rather than individual ports. For example, portgroup 1 can be configured in 10 Gigabit Ethernet mode using the command hw-module slot # operation-mode port-group 1 TenGigabitEthernet. This will result in all ports on the left-half side of the front panel getting configured for 10 Gigabit Ethernet port operational mode.