Configuring An Nbma Interface; Creating An Nbma Static Map - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

JunosE 11.3.x Link Layer Configuration Guide

Configuring an NBMA Interface

Creating an NBMA Static Map

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You configure an ATM NBMA 1483 subinterface in a manner similar to configuring a
standard ATM 1483 subinterface. When you specify a subinterface, however, you must
select the multipoint option if you plan to add multiple circuits to form an NBMA interface.
If you do not select multipoint, the subinterface defaults to point-to-point, and only a
single circuit can be affiliated with that subinterface.
You can configure one or more PVCs and associate them with the subinterface you create.
Also, you can enable InARP and identify a refresh rate on each specific circuit. For each
NMBA interface, either InARP must be enabled, or a static map entry must be provided
for each circuit owned by the interface; otherwise, transmitting over that circuit is
impossible.
NOTE: NBMA interfaces support only the aal5snap encapsulation.
To configure an NBMA interface:
Configure a physical interface.
1.
host1(config)#interface atm 2/0
Configure an ATM 1483 subinterface.
2.
host1(config-if)#interface atm 2/0.2 multipoint
Configure PVCs by specifying the VCD, VPI, VCI, and encapsulation type.
3.
host1(config-subif)#atm pvc 1 1 1 aal5snap inarp 10
host1(config-subif)#atm pvc 2 2 2 aal5snap
(Optional) Specify InARP and a refresh rate (also optional).
4.
host1(config-subif)#atm pvc 3 3 3 aal5snap inarp 5
host1(config-subif)#atm pvc 4 4 4 aal5snap inarp
Assign an IP address and subnet mask to the PVC.
5.
host1(config-subif)#ip address 192.32.10.20 255.255.255.0
(Optional) Use the appropriate show commands to verify your configuration.
6.
host1#show atm interface atm 2/0
host1#show atm map
host1#show nbma arp atm 2/0
host1#show atm vc atm 2/0 2
host1#show atm subinterface atm 2/0.2
Static mapping creates an association between IP address–ATM PVC pairs for one or
more member circuits of an ATM 1483 NBMA interface. Not every circuit necessarily gets
the required association from a static map.
Copyright © 2010, Juniper Networks, Inc.