| 1 |
Which protocol is used for AToM pseudowire control-plane signaling? |
| Answer: |
LDP. |
| 2 |
What are the three steps of AToM pseudowire setup between peer PE routers (assuming an LDP session has not yet been established between PE routers)? |
| Answer: |
LDP discovery, LDP session initialization (establishment), and LDP Label Mapping exchange (VC/PW label bindings exchange). |
| 3 |
An AToM data-plane packet typically consists of which elements? |
| Answer: |
One or more tunnel labels, a PW/VC label, an optional control word, and a payload. |
| 4 |
Can TDP be used to signal the tunnel LSP? Can TDP be used to signal AToM PW/VClabels? |
| Answers: |
Yes, it can be used to signal the tunnel LSP. No, it cannot be used to signal PW/VC labels; these must be signaled using LDP. |
| 5 |
If an AToM HDLC pseudowire is used to transport Frame Relay (Frame Relay portmode), in what way do PE routers participate in LMI? |
| Answer: |
They do not participate at all in LMI. |
| 6 |
How can Layer 2 traffic to be forwarded between attachment circuits on the same PE router? |
| Answer: |
Using local switching. |
| 7 |
What is one method of configuring RVSP-TE signaled tunnel LSPs to transport AToM pseudowires between PE routers? |
| Answer: |
Tunnel selection. |
| 8 |
When transporting ATM cells over an AToM cell relay pseudowire, how is it possible to transport more than one ATM cell per AToM data-plane packet? |
| Answer: |
By using ATM cell relay with cell packing. |
| 9 |
How is it possible to connect dissimilar attachment circuit types over AToM pseudowires? |
| Answer: |
Using L2VPN interworking. |
| 10 |
What are the two modes of L2VPN interworking? |
| Answer: |
Ethernet mode and IP mode. |