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Forum Discussion
MLAG not working
I tried to configure MLAG as in the ManagedSwitches_SWA_10.1.0_14Oct2013.pdf
on two M7100-24X switches.
The LAG between the 2 Swtches is working.
But as soon as i want to use the LAG as the vpc link by entering
interface lag 1
vpc peer-link
on both switches i loose the connectivity between the two switches!
What do i wrong?
Here is the config:
=========================================
!Current Configuration:
!
!System Description "M7100-24X - ProSafe 24-port 10G L2+ Managed Switch, 10.1.0.11, B1.0.0.5"
!System Software Version "10.1.0.11"
!System Up Time "0 days 15 hrs 16 mins 19 secs"
!Cut-through mode is configured as enabled
!Additional Packages QOS,IPv6 Management,Routing
!Current SNTP Synchronized Time: SNTP Last Attempt Status Is Not Successful
!
network protocol none
vlan database
vlan routing 1 1
exit
ip name server 10.11.0.1
ip routing
ip default-gateway 10.11.0.1
interface 0/19
addport lag 1
exit
interface 0/20
addport lag 1
exit
interface 0/20
description 'LAG to other Switch'
exit
interface lag 1
no spanning-tree port mode
vpc peer-link
exit
interface lag 2
vpc 1
exit
interface lag 3
vpc 2
exit
interface vlan 1
routing
ip address 10.11.3.101 255.255.252.0
exit
feature vpc
vpc domain 1
peer-keepalive enable
exit
exit
=========================================
3 Replies
Nearly the same Problem here.
We tried to use MLAG between two M7100-24X Switches.
Firmware is updated to the newest version 11.0.0.12.
We followed the instructions given in Document M5300-M6100-M7100_SWA_v11_28Mar2015.pdf.
First we established the peer link using ports 19 and 20 bundled to LAG 20.
Here we tried to use a dynamic link as suggested in the manual.
Even though no error occured, the link could get no connection.
The link was shown as down with no port active.
After changing the link mode to static it became operational.
Now we followed the additional steps to configure the vpc.
But as soon as we tried to assign the peer link unsing the command:
interface lag 20
vpc peer-link
we got an error as result.
Any help appreciated.
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