Junos OS Release 12.3 enables improved virtual private
LAN service (VPLS) MAC address learning on T4000 routers with Type
5 FPCs by supporting up to 262,143 MAC addresses per VPLS routing
instance. In Junos OS releases before Release 12.3, T4000 routers
with Type 5 FPCs support only 65,535 MAC addresses per VPLS routing
instance.
To enable improved VPLS MAC address learning on T4000
routers with Type 5 FPCs:
- Enable the network services mode by including the
enhanced-mode statement at the [edit chassis network-services] hierarchy level.[edit chassis network-services]
user@host# set enhanced-mode
Note: After you configure the enhanced-mode statement
and commit your configuration, a warning message prompts you to reboot
the router.
- Perform a system reboot in operational mode.
user@host> request system-reboot
After the router reboots, only the T4000 Type 5 FPCs are online
while the remaining FPCs are offline. You can verify the status of
the FPCs by using the show chassis fpc operational mode
command.
- Modify the size of the VPLS MAC address table at the
[edit routing-instance instance-name protocols
vpls] hierarchy level. [edit routing-instance instance-name protocols vpls]
user@host# set mac-table-size size
For example, to set the MAC address learning limit to
262,143 addresses for each vpls routing instance:
[edit routing-instance vpls protocols vpls]
user@host# set mac-table-size 262143
Note: The enhanced-mode statement supports up to
262,143 MAC addresses per VPLS routing instance. However, the MAC
address learning limit for each interface remains the same (that is,
65,535 MAC addresses).
- In configuration mode, verify the configuration.
user@host# show routing-instances instance-name
vpls {
instance-type vpls;
protocols {
vpls {
mac-table-size {
262143;
}
}
}
}
To disable the improved VPLS MAC address learning feature on
T4000 routers with Type 5 FPCs, include the delete chassis network-services
enhanced-mode statement at the [edit] hierarchy level.
Note: After you disable network services mode and commit your
configuration, a warning message prompts you to reboot the router.
You must reboot the router. Continuing without a reboot might result
in unexpected system behavior.
