Displaying And Debugging Mpls L2Vpn - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Suppose a corporation has ten CEs in its VPN, but the expanded network may have 20
CEs, so you can set the CE range as 20. Then the system will allocate labels for the
future ten CEs in advance, so you only need to modify those CEs newly connected to
the PE in future expansion.
Caution:
You can only modify CE range to a larger value, but not a less value. For example, you
can change CE range from 10 to 20, but not from 10 to 5. The only way to alter it to a
less value: First delete the current CE range and then create another.
II. Configuring CE connection
To create a CE connection in MPLS L2VPN CE view, you just need to specify the CE
interface and the ID of the peer CE (CE offset). You can preset some reserved
connections for future expansion.
Perform the following configurations in MPLS L2VPN CE view
Table 4-17 Create CE connection
Operation
Create
connection
Delete
connection
If the optional parameter CE offset is not specified, then
1) If this is the first connection for the CE, CE offset is defaulted to 1.
2) Otherwise, CE offset is set to the former CE offset plus 1.
You can have CE IDs increment beginning at 1 when planning VPNs so that you can
configure connections according to CE IDs when making configuration. This allows you
to use the default CE offset instead of configuring one for most connections, thus
simplifying the configuration.

4.6 Displaying and Debugging MPLS L2VPN

After accomplishing the configuration tasks described earlier, you can execute the
display command in any view to view the running state of the configured MPLS L2VPN
and thus to evaluate the effect of the configurations.
Execute the debugging command in user view to debug MPLS L2VPN.
a CE connection [ ce-offset offset ] { interface interface-type
interface-num }
a CE undo connection [ ce-offset offset ] { interface
interface-type interface-num }
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Chapter 4 MPLS L2VPN Configuration
Command