Alcatel-Lucent 7705 - Pseudowire Switching with Pseudowire Redundancy; Table 25: Supported Pseudowire Switching Options

VLL Services
7705 SAR OS Services Guide Page 175
Table 25 shows the pseudowire switching options supported in Release 3.0 of the
7705 SAR.
The 7705 SAR supports use of an optional control word on both pseudowire segments. Use
of a control word is negotiated by the 7705 SAR and 7750 SR during the signaling phase.
The 7705 SAR and 7750 SR negotiate during the signaling phase even if a control word is
not used. If a control word is used, the 7705 SAR generates it and configures it with all 0s.
When the 7705 SAR appends or strips the control word to support VCCV ping type 1, the
TTL value of the switched pseudowire is reset to 255. If the control word is present on the
ingress pseudowire packet and it is not removed because it is on an end-to-end service, the
7705 SAR reduces the pseudowire TTL by 1 at the time of pseudowire switching.
Pseudowire Switching with Pseudowire Redundancy
Pseudowire switching with pseudowire redundancy supports one redundant pseudowire with
up to four redundant spoke SDPs. Figure 30 shows an example of a network with simplex to
redundant pseudowire switching.
Table 25: Supported Pseudowire Switching Options
Pseudowire Segment 1 Pseudowire Segment 2
Tunnel Pseudowire Tunnel Pseudowire Epipe Ipipe Apipe Cpipe
-ces
Cpipe
-satop
RSVP-TE,
LDP, Static
MPLS, IP,
or GRE/IP
Static RSVP-TE,
LDP, Static
MPLS, IP,
or GRE/IP
TLDP (with or
without
pseudowire
redundancy)
✓✓✓✓ ✓
RSVP-TE,
LDP, Static
MPLS, IP,
or GRE/IP
TLDP RSVP-TE,
LDP, Static
MPLS, IP,
or GRE/IP
TLDP ✓✓✓✓ ✓
IP
Static
(1)
MPLS-
Static
Static
(1)
✓✓✓✓ ✓
Note:
1. A static- to-static pseudowire switching service will fail if there is more than one S-PE node between the T-PE nodes.