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How to configure and do cabling for BFD MAD on 4 IRF switches

 
pradeep7739
Occasional Contributor

How to configure and do cabling for BFD MAD on 4 IRF switches

Hi Team,

I am trying to build a irf stack with 4 switches, how to configure BFD MAD for this, i know for 2 switches, but i am confused for 4 switches.

should i do cabling from master to all 3 slave switches? or should they be daisy chained 

3 REPLIES 3
parnassus
Honored Contributor

Re: How to configure and do cabling for BFD MAD on 4 IRF switches

BFD MAD without an assist device (a fifth Switch) will require you to directly link any IRF Member with any other IRF member so...four IRF Members will require 6 links (three dedicated interfaces on each IRF Member)...to save interfaces you can deploy BFD MAD with an assist device (the fifth Switch) and so link, on each IRF Member, just one port to that assist device...using only  4 links (so four interfaces, one for each IRF Member).

pradeep7739
Occasional Contributor

Re: How to configure and do cabling for BFD MAD on 4 IRF switches

BFD MAD cabling-2.png

if i understood your answer, i am looking at above cabling for BFD MAD.

How about configuration, will all the port be in same VLAN? 

parnassus
Honored Contributor

Re: How to configure and do cabling for BFD MAD on 4 IRF switches

Yes, BFD MAD dedicated ports must belong to the same VLAD dedicated to MAD.

Something like (four IRF Members directly connectet each others using three interfaces on each IRF Member, no BFD MAD intermediate device):

 

# IRF BFD MAD dedicated VLAN Id

vlan 200
description IRF-BFD-MAD

# IRF BFD MAD VLAN Id SVIs defined for each IRF Member (here we used a /28 Subnet for up to 14 hosts)

interface Vlan-interface 200
mad bfd enable
mad ip address 10.0.255.1 255.255.255.240 member 1
mad ip address 10.0.255.2 255.255.255.240 member 2
mad ip address 10.0.255.3 255.255.255.240 member 3
mad ip address 10.0.255.4 255.255.255.240 member 4

# IRF Member 1

interface GigabitEthernet 1/0/1
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 1/0/2
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 1/0/3
port link-mode bridge
port access vlan 200
stp disable

# IRF Member 2

interface GigabitEthernet 2/0/1
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 2/0/2
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 2/0/3
port link-mode bridge
port access vlan 200
stp disable

# IRF Member 3

interface GigabitEthernet 3/0/1
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 3/0/2
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 3/0/3
port link-mode bridge
port access vlan 200
stp disable

# IRF Member 4

interface GigabitEthernet 4/0/1
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 4/0/2
port link-mode bridge
port access vlan 200
stp disable

interface GigabitEthernet 4/0/3
port link-mode bridge
port access vlan 200
stp disable

 

A two IRF Members BFD MAD configuration can be found here (as example) BUT, for sure, the IRF Configuration Guide for your Comware based Switch Series (whatever it is) has some BDF MAD deployment examples too.