1-6
vlan-vpn tpid
Syntax
vlan-vpn
tpid value
undo vlan-vpn tpid
View
Ethernet port view
Parameters
value
: User-defined TPID value (in hexadecimal format), in the range 0x0001 to 0xFFFF.
Description
Use the
vlan-vpn tpid
command to set the TPID value for a port. With the TPID value set on a port, the
port fills the value to the TPID field of the outer tag to be added for a packet and, upon receiving a packet,
compares the TPID value with the TPID field of the packet to determine whether the packet carries a
VLAN tag or not.
Use the
undo vlan-vpn tpid
command to restore the default TPID value.
The default TPID value is 0x8100.
For the position and function of the TPID field in a packet, refer to
VLAN Operation
.
The TPID field in an Ethernet frame has the same position with the protocol type field in a frame without
a VLAN tag. To prevent other devices in the network from recognizing the tag-encapsulated packets of
the current switch as protocol packets, you are not allowed to set the TPID value to any of the values in
the table below.
Table 1-3
Common Ethernet frame protocol type values
Protocol type
Value
ARP 0x0806
IP 0x0800
MPLS 0x8847/0x8848
IPX 0x8137
IS-IS 0x8000
LACP 0x8809
802.1x 0x888E
Besides the default TPID value, you can configure only one TPID value on a Switch 5500-EI switch.
Examples
# Set the TPID value to 0x9100 for Ethernet 1/0/2 port.
Summary of Contents for 5500-EI PWR
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Page 228: ...ii stp transmit limit 1 44 vlan mapping modulo 1 45 vlan vpn tunnel 1 46...
Page 477: ...5 24 Sysname vlan 2 Sysname vlan2 service type multicast...
Page 503: ...2 3 System View return to User View with Ctrl Z Sysname dot1x url http 192 168 19 23...
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Page 597: ...2 2 security policy server 192 168 0 1 user name format without domain...
Page 648: ...1 9 Examples Clear static ARP entries Sysname reset arp static...
Page 663: ...4 3 Sysname resilient arp interface vlan interface 2...
Page 767: ...1 28 From 12 00 Jan 1 2008 to 12 00 Jun 1 2008...
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