Vlan Processing: Vlan-Enabled Ethernet To Wan Interfaces; Vlan Processing: Wan Interface To A Vlan-Enabled Ethernet Interface - Enterasys Security Router X-PeditionTM User Manual

Ethernet VLAN Tag IP: 9.9.9.1
Priority CFI
Incoming VLAN tagged frame

VLAN Processing: VLAN-enabled Ethernet to WAN Interfaces

In this scenario, shown in
because no VLAN is linked with the outgoing port (Serial 1).
Note: VLAN tags cannot be assigned to a WAN interface - they are relevant only for XSR
FastEthernet and GigabitEthernet interfaces.
Ethernet VLAN Tag IP: 9.9.9.1
Priority CFI
Incoming VLAN tagged frame

VLAN Processing: WAN Interface to a VLAN-enabled Ethernet Interface

In this scenario, as shown in
associated with the outgoing VLAN sub-interface (FastEthernet 1.1). The packet will be forwarded
to IP address 9.9.9.1 of the next-hop router. For traffic which did not enter the XSR from a VLAN
sub-interface, the priority bits are set to 0 (lowest level).
Figure 5-5 VLAN Ethernet to Fast/GigabitEthernet Topology
2
VLAN 1200
IP 1.2.3.4/24
1
VLAN: 1300
Figure 5-6, the XSR does not insert a VLAN tag in Ethernet frames
Figure 5-6 VLAN Ethernet to WAN Interfaces Topology
2
VLAN 1200
IP 1.2.3.4/24
1
VLAN: 1200
Figure 5-7, a VLAN tag is inserted since a VLAN ID (1200) is
IP Routing Table
1.2.3.0/24 F1.1
3.3.2.0/24 F2
9.9.9.0/24 F2 (Static)
F2
Outgoing Ethernet frame
F1.1
IP Routing Table
1.2.3.0/24 F1.1
3.3.2.0/24 Serial 1
9.9.9.0/24 Serial 1 (Static)
Serial 1
Outgoing Serial frame
F1.1
IP 3.2.3.4/24
PPP encapsulation
IP Routing Protocols
IP 3.2.3.4/24
3
Ethernet IP: 9.9.9.1
3
PPP IP: 9.9.9.1
XSR User's Guide 5-21