R3204P16-HP Load Balancing Module Network Management Configuration Guide-6PW101
Table Of Contents
- Title page
- Contents
- Interface management configuration
- IP addressing configuration
- MAC address table configuration
- Layer 2 forwarding configuration
- Layer 2 forwarding overview
- Configuring general Layer 2 forwarding
- Configuring inline Layer 2 forwarding
- Configuring inter-VLAN Layer 2 forwarding
- Forward-type inline Layer 2 forwarding configuration example
- Blackhole-type inline Layer 2 forwarding configuration example
- Inter-VLAN Layer 2 forwarding configuration example
- VLAN configuration
- ARP configuration
- Gratuitous ARP configuration
- Proxy ARP configuration
- Layer 3 forwarding configuration
- NAT configuration
- Overview
- Configuring a NAT policy in the web interface
- Configuring NAT in the CLIs
- Configuration guidelines
- ALG configuration
- Static route configuration
- RIP configuration
- OSPF configuration
- BGP configuration
- Policy-based routing configuration
- Route displaying
- DNS configuration
- Overview
- Configuring DNS on the web interface
- Configuring DNS in the CLIs
- Troubleshooting IPv4 DNS configuration
- Support and other resources
- Index
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Inter-VLAN Layer 3 forwarding
If the destination MAC address of an incoming packet matches the MAC address of a VLAN interface,
the LB module removes the Layer 2 header and delivers the packet to the Layer 3 forwarding engine.
The following prerequisites are necessary for inter-VLAN Layer 3 forwarding:
• The ingress interface and egress interface on the switch belong to different VLANs.
• The two ten-GigabitEthernet interfaces at both ends of the link between the switch and the LB
module are configured as trunk.
• The operating mode of the LB module's ten-GigabitEthernet port that connects to the switch is
configured as Layer 2.
• Configure VLAN interfaces with the same numbers as VLANs created on the switch for the LB
module.
Inter-VLAN Layer 3 forwarding operates as follows:
1. After receiving a packet, the switch adds the VLAN tag of the receiving interface to the packet and
if the packet is destined to another VLAN, sends the packet to the LB module through the trunk port
in between.
2. If the destination MAC address of the packet matches the MAC address of a VLAN interface, the
LB module removes the Layer 2 header and delivers the packet to the Layer 3 forwarding engine.
3. The Layer 3 forwarding engine looks up a route entry for the packet and sends it out of the
outgoing VLAN interface.
Configuring Layer 3 subinterface forwarding
NOTE:
For more information about Layer 3 subinterface forwarding configuration commands, see
Network
Management Command Reference
.
Configuring Layer 3 subinterface forwarding
Perform the following configurations to achieve Layer 3 subinterface forwarding.
1. Configure the ports of the switch
• Create two VLANs. Assign the ingress port to one VLAN and egress port to the other.
• Configure the switch’s ten-GigabitEthernet port that connects to the LB module as a trunk port and
configure the trunk port to join these two VLANs.
2. Configure the LB module
• Configure the operating mode of the LB module's ten-GigabitEthernet port that connects to the
switch as routing.
• Create two subinterfaces for the LB module's ten-GigabitEthernet port. Associate them with the
VLANs created on the switch and set the encapsulation type as dot1q.
• Assign IP addresses for the two subinterfaces.