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Juniper Networks/Cisco Systems Switch Interoperability Cookbook

! ! !

8. Configure a link aggregation group ae2 for connection to the Cisco Nexus 7010. In

this case the LAG is also a trunk that allows traffic for all VLANs, though VLAN

configuration is not required for MC-LAG to work:

EX9208B# set interfaces xe-5/0/5 description "linkagg to 7010"

EX9208B# set interfaces xe-5/0/5 ether-options 802.3ad ae2

EX9208B# set interfaces ae2 aggregated-ether-options lacp active

EX9208B# set interfaces ae2 aggregated-ether-options lacp system-id

00:01:02:03:04:05

EX9208B# set interfaces ae2 aggregated-ether-options lacp admin-key 3

EX9208B# set interfaces ae2 aggregated-ether-options mc-ae mc-ae-id 2

EX9208B# set interfaces ae2 aggregated-ether-options mc-ae redundancy-group

EX9208B# set interfaces ae2 aggregated-ether-options mc-ae chassis-id 1

EX9208B# set interfaces ae2 aggregated-ether-options mc-ae mode active-

active

EX9208B# set interfaces ae2 aggregated-ether-options mc-ae status-control

standby

EX9208B# set interfaces ae2 unit 0 family ethernet-switching interface-mode

trunk

EX9208B# set interfaces ae2 unit 0 family ethernet-switching vlan members

all

EX9208B# commit

Cisco!commands!

As noted, no special MC-LAG configuration is needed on Cisco devices. The only

required steps are to define link aggregation groups (called “port channels” in Cisco

parlance) on each device, as previously discussed in the “link aggregation” section.

Here are the steps required to configure link aggregation on the Cisco Catalyst 3850:

1. Define a port channel to connect with the MC-LAG. In this example, the interface

Port-channel1 is also a trunk that allows traffic for all VLANs, though VLAN

configuration is not required for link aggregation to work:

c3850# configure terminal

c3850(config)# interface Port-channel1

c3850(config-if)# switchport mode trunk

c3850(config-if)# exit

2. Assign interfaces to Port-channel1:

c3850(config)# interface TenGigabitEthernet1/1/3

c3850(config-if)# description linkagg to EX9208A

c3850(config-if)# switchport mode trunk

c3850(config-if)# channel-group 1 mode passive

c3850(config-if)# interface TenGigabitEthernet1/1/4

c3850(config-if)# description linkagg to EX9208B

c3850(config-if)# switchport mode trunk

c3850(config-if)# channel-group 1 mode passive

c3850(config-if)# end

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Cisco Ex SERIES Manual de usuario Pagina 38

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