Reference Guide

808 | Service Provider Bridging
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Figure 45-8. Single and Double-tag TPID Mismatch on the S5000
Table 45-1 details the outcome of matched and mismatched TPIDs in a VLAN-stacking network with the
S-Series.
Table 45-1. S5000 Behavior for Mis-matched TPID
Network
Position
Incoming
Packet TPID
System
TPID Match Type 9.1(1.0)
Ingress Access Point untagged 0xUVWX — switch to default
VLAN
single-tag (0x8100) 0xUVWX single-tag
mismatch
switch to default
VLAN
0x8100 single-tag match switch to VLAN
0x81XY single-tag first-byte
match
switch to default
VLAN
Core untagged 0xUVWX — switch to default
VLAN
double-tag
0xUVWX
0xUVWX double-tag match switch to VLAN
0xUVYZ double-tag
first-byte match
switch to default
VLAN
0xQRST double-tag
mismatch
switch to default
VLAN
DEFAULT VLAN
L
A
I
N
T
E
R
N
E
T
S
E
R
V
I
C
E
P
R
O
V
I
D
E
R
VL
AN
GREEN
, VL
AN PURPLE
VLAN
G
REEN
V
L
AN PU
RP
L
E
V
L
AN
B
L
UE
VLA
N
RE
D
V
LAN
RED
TPID
(0x8100)
PCP
CFI
(0)
VID
(VLAN Red)
TPID
(0x8100)
PCP
CFI
(0)
VID
(VLAN Red)
TPID
(0x8181)
PCP
CFI
(0)
VID
(VLAN Purple)
R4
Building A
Building B
R2-E-Series w/ FTOS version <8.2.1.0
TPID: 0x8181
R1-C-Series
TPID: 0x9100
TPID 0x9100
R4-Non-Dell System
TPID: 0x8181
TPID 0x8181
R3-C-Series
TPID: 0x9100
Building D
Building C
DEFAULT VLAN