Introduction DHCP Relay Mode
Software Reference for SwitchBlade x3100 Series Switches (Network Management)
7-8
• Various DHCP Instance/VLAN mapping are allowed; however, one VLAN cannot map to multiple DHCP
instances.
• If IP Filtering is set to ON for an interface, there is a limit of eight VLANs that can participate in DHCP
Relay mode on that interface.
• Each DHCP Relay instance can have up to 10 servers.
FIGURE 7-3 Example DHCP Relay
= Physical Link (Network)
= Links
60
B
1
6
C
0.3
A
= Inband_MGT VLAN (60)
DHCP_logical_VLAN_61
0.1
6.1
0.2
0.1
0.3
0.2
= Telesyn 9000
A
C
4
= Physical Link (Customer)
= XE Interface
2.1
0.2
3
5
6
= GE Interface
20
40
60 60
20
50
20
= vlan_video
40
= vlan_data_silver
= vlan_video maps to
one DCHP Instance
(with its set of servers)
60
= Inband_MGMT
= vlan_data_silver and
vlan_data_gold map to
one DCHP Instance
(with its set of servers)
50
= vlan_data_gold
Set top box
PC PC
Set top box Set top boxSet top box
1 2
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