Lacp-Mad Enabled Irf Configuration Example - 3Com S7906E Configuration Manual

[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad bfd enable
[Sysname-Vlan-interface3] mad ip add 192.168.2.1 24 chassis 1
[Sysname-Vlan-interface3] mad ip add 192.168.2.2 24 chassis 2
[Sysname-Vlan-interface3] quit

LACP-MAD Enabled IRF Configuration Example

Network requirements
As shown in Figure
namely, Device A. To accommodate to business growth, the network must be scaled up to extend its
forwarding capability while the present investments of the customer are protected. In addition, the ease
of management and maintenance must be ensured.
Figure 1-9 Network diagram for IRF (using LACP MAD detection)
Device A
GE1/3/0/2
GE3/0/1
Note: The solid orange line represents the IRF link; the solid magenta lines represent
links used for LACP MAD detection; the solid black lines represent Ethernet links.
Configuration consideration
Device A is located at the distribution layer of the network. To improve the forwarding capability at
this layer, additional devices are needed. In this example, Device B is added.
To address the requirements for high availability, ease of management and maintenance, use IRF2
technology to create an IRF with Device A and Device B at the distribution layer. The access
devices are each connected to the distribution layer with dual links.
To offset the risk of IRF splits, configure MAD to detect multi-active IRF collisions. In this example,
LACP MAD is adopted because the access devices connect to the uplink devices in the
aggregation mode.
1-9, the network is outgrowing the forwarding capability of the existing core switch,
IRF
XGE1/3/0/25
IRF link
(IRF-port1/2)
...
GE3/0/2
Device B
XGE2/3/0/25
(IRF-port2/1)
GE2/3/0/2
1-22