Trans-Mode - HP 5800 series Command Reference Manual

No RD is configured by default. You must configure an RD for each VPN. A VPN takes effect only when it
is configured with an RD.
Once you configure an RD for a VPN, you cannot remove the association between the RD and the VPN.
Syntax
route-distinguisher route-distinguisher
View
MPLS L2VPN view
Default level
2: System level
Parameters
route-distinguisher: Specifies the RD in the format of nn:nn or IP-address:nn. It can be a string of 3 to 21
characters.
An RD can be in any of the following formats:
16-bit AS number:32-bit user-defined number. For example, 101:3.
•
32-bit IP address:16-bit user-defined number. For example, 192.168.122.15:1.
•
32-bit AS number:16-bit user-defined number, where the AS number must be equal to or greater than
•
65,536. For example, 65536:1.
Examples
# Configure the RD of a VPN.
<Sysname> system-view
[Sysname] mpls l2vpn vpn1 encapsulation ethernet
[Sysname-mpls-l2vpn-vpn1] route-distinguisher 300:1

trans-mode

Description
Use the trans-mode command to specify the PW transport mode.
Use the undo trans-mode command to restore the default.
By default, the PW transport mode is VLAN.
The packet encapsulation type on an Ethernet PW can be either Ethernet or VLAN.
In Ethernet mode, P-Tag is not transferred on the PW. If a packet from a CE contains the service
•
delimiter, the PE removes the service delimiter and adds a PW label and a tunnel label into the
packet before sending the packet out. If a packet from a CE contains no delimiter, the PE directly
adds a PW label and a tunnel label into the packet, and then sends the packet out. For a packet to
be sent downstream, you can configure the PE to add or not add the service delimiter into the
packet. You cannot rewrite and remove existing tags.
• In VLAN mode, packets transmitted over the PW must carry a P-Tag. For a packet from a CE, if it
contains the service delimiter, the PE keeps the P-TAG unchanged or changes the P-tag to the VLAN
tag expected by the peer PE or to a null tag (the tag value is 0), and then adds a PW label and a
tunnel label into the packet before sending the packet out. If the packet contains no service delimiter,
the PE adds the VLAN tag expected by the peer PE or a null tag, and then a PW label and a tunnel
266