Fujitsu PSWITCH 2048P User Manual

User’s Guide FUJITSU PSWITCH
December/2018 85
Spanning tree protocol is disabled while SPBM is running. VLANs used by SPBM are
loop free, but VLANs not used by SPBM may cause loops in the topology.
Here is an example of using SPBM for path redundancy.
Figure 3-10: SPBM for path redundancy
In Figure 3-10, the link between BEB 1 and BEB 2 has the lowest cost. SPBM uses
this link to forward traffic from I-Domain 4096. When this link goes down, the
SPBM recalculates for topology change and selects another link to the BCB to
forward traffic. In this example, the BCB is configured to pass only VLAN 4000
traffic to prevent loops.
The following is an example setting for each switch.
BEB1
BEB2
BCB
hostname "BEB1"
vlan database
vlan 256,4000
exit
configure
interface 0/37
isis enable
isis spbm
exit
interface 0/39
isis enable
isis spbm
exit
mim backbone-source-mac
00:00:00:11:11:11
mim b-domain 4000
interface 0/37
interface 0/39
exit
mim i-domain 10000
interface 0/1 match dot1ad 256
bridge 4000
flooding-mac
00:00:00:22:22:22
exit
router isis
hostname "BEB2"
vlan database
vlan 256,4000
exit
configure
interface 0/37
isis enable
isis spbm
exit
interface 0/39
isis enable
isis spbm
exit
mim backbone-source-mac
00:00:00:22:22:22
mim b-domain 4000
interface 0/37
interface 0/39
exit
mim i-domain 10000
interface 0/1 match dot1ad 256
bridge 4000
flooding-mac
00:00:00:11:11:11
exit
router isis
hostname "BCB"
vlan database
vlan 4000
exit
configure
dvlan-tunnel ethertype vMAN
primary-tpid
interface 0/25
switchport mode trunk
switchport trunk allowed vlan
4000
isis enable
isis spbm
exit
interface 0/27
switchport mode trunk
switchport trunk allowed vlan
4000
isis enable
isis spbm
exit
router isis
spbm
spbm b-vid 4000 ect 1
enable
exit

Fujitsu PSWITCH 2048P Specifications

General

Brand	Fujitsu
Model	PSWITCH 2048P
Category	Switch
Language	English