Copyright © 2010, Juniper Networks, Inc.
Early Field Trial Features
9
Release 11.1.1
Early Field Trial Features
The features described in this section are present in the code but have not yet been
fully qualified by Juniper Networks. These features are available only for field test
purposes in this release. If you use any of these features before they have been fully
qualified, it is your responsibility to ensure that the feature operates correctly in your
targeted configuration.
DHCP
z
Support for DHCP External Server, DHCP Local Server, DHCP Relay, and DHCP Relay
Proxy on POS Access Interfaces
The following packet over SONET (POS) module combinations on E Series routers
now support configuration of the DHCP external server, DHCP local server, DHCP
relay, and DHCP relay proxy applications, alone or in combination, when the POS
module is the access interface:
−
POS module combinations on the E120 router and the E320 router:
>
ES2 4G LM with ES2-S1 OC12-2 STM4 POS IOA
>
ES2 4G LM with ES2-S1 OC48 STM16 POS IOA
−
POS module combinations on ERX14xx models, ERX7xx models, and the ERX310
router:
>
OCx/STMx POS line module with OC3-4 I/O module
>
OCx/STMx POS line modules with OC12/STM4 I/O module
>
OC48 line module with OC48 FRAME APS I/O module
In the current release, this feature is available for early field test purposes only.
You can configure DHCP external server, DHCP local server, DHCP relay, and DHCP
relay proxy on these POS modules in either a virtual router (VR) or a VPN routing and
forwarding instance (VRF).
As part of this feature, the
pos
keyword has been added to the existing
ip dhcp-local
limit
command. To specify the maximum number of IP addresses that the DHCP
local server application can supply to all POS access interfaces or to a specific POS
access interface, in the range 0–96000, use the
ip dhcp-local limit
command with
the new
pos
keyword. For example
:
! Set the IP address limit for all POS access interfaces to 1000
host1(config)#
ip dhcp-local limit pos 1000
! Set the IP address limit for the specified POS access interface to 2000
host1(config)#
ip dhcp-local limit interface pos 5/0/0 2000
! Restore the IP address limit for all POS access interfaces to the default value, ! 48000
host1(config)#
no ip dhcp-local limit pos
To display the maximum number of IP address leases available for POS access
interfaces, use the existing
show ip dhcp-local limits
command. For example:
host1#
show ip dhcp-local limits
*****************************************
DHCP Local Server Address Limits
ATM Limit - 48000
VLAN Limit - 48000
POS Limit - 1000
Ethernet Limit - 48000