Reference Guide

Service Provider Bridging | 901
Table 49-2, "C-Series and S-Series Behaviors for Mis-matched TPID," in Service Provider Bridging
details the outcome of matched and mismatched TPIDs in a VLAN-stacking network with the C-Series and
S-Series.
Table 49-2. C-Series and S-Series Behaviors for Mis-matched TPID
Network
Position
Incoming
Packet TPID
System
TPID Match Type Pre-8.2.1.0 8.2.1.0+
Ingress Access Point untagged 0xUVWX — switch to default
VLAN
switch to default
VLAN
single-tag (0x8100) 0xUVWX single-tag
mismatch
switch to default
VLAN
switch to default
VLAN
0x8100 single-tag match switch to VLAN switch to VLAN
0x81XY single-tag first-byte
match
switch to VLAN switch to default
VLAN
Core untagged 0xUVWX — switch to default
VLAN
switch to default
VLAN
double-tag
0xUVWX
0xUVWX double-tag match switch to VLAN switch to VLAN
0xUVYZ double-tag
first-byte match
switch to VLAN switch to default
VLAN
0xQRST double-tag
mismatch
switch to default
VLAN
switch to default
VLAN
Egress Access Point untagged 0xUVWX — switch to default
VLAN
switch to default
VLAN
double-tag
0xUVWX
0xUVWX double-tag match switch to VLAN switch to VLAN
0xUVYZ double-tag
first-byte match
switch to VLAN switch to default
VLAN
0xQRST double-tag
mismatch
switch to default
VLAN
switch to default
VLAN