Juniper ACX1000 Configuration Manual page 443

Copyright © 2017, Juniper Networks, Inc.
NOTE: Integrated routing and bridging (IRB) provides simultaneous support
for Layer 2 bridging and Layer 3 IP routing on the same interface. IRB enables
you to route local packets to another routed interface or to another bridging
domain that has a Layer 3 protocol configured.
The interface to bridge domain relationship might be implicit (the interface
is mapped to the bridge domain by the system based on the VLAN tag) or
explicit (the interface is mapped to the bridge domain by configuring it in the
bridge domain definition). For the explicit case, tagging might not be relevant
for the mapping.
In the case of an IRB interface, the format displays the Layer 2 interface instead of the
IRB interface along with the bridge domain name. For IRB interfaces (or other pseudo
devices) the default format is as follows:
IRB interfaces that use bridge domains but do not use VLANs or S-VLANs:
(fe | ge)-fpc/pic/port.subunit:bridge-domain-name
IRB interfaces that use VLANs:
(fe | ge)-fpc/pic/port.subunit:vlan-name
To include the IRB interface name with the Layer 2 interface name, configure the
statement. The format is as follows:
include-irb-and-l2
IRB interfaces that use bridge domains but do not use VLANs or S-VLANs:
(fe | ge)-fpc/pic/port:bridge-domain-name+irb.subunit
IRB interfaces that use VLANs:
(fe | ge)-fpc/pic/port:vlan-name+irb.subunit
To include only the IRB interface name without the Layer 2 interface and bridge domain
or VLAN, configure the
no-vlan-interface-name
irb.subunit
To enable insertion of option 82 information:
Specify that you want to configure option 82 support.
1.
[edit forwarding-options dhcp-relay]
user@host# edit relay-option-82
Configure the DHCP relay agent to insert the Agent Circuit ID suboption, the Agent
2.
Remote ID suboption, or both.
To insert the Agent Circuit ID:
[edit forwarding-options dhcp-relay relay-option-82]
user@host# set circuit-id
To insert the Agent Remote ID:
Chapter 11: Configuring DHCP and DHCPv6 Relay Agent
statement. The format is as follows:
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