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Chapter 11 Circuits and Tunnels

Figure 11-9

•

Multicard EtherSwitch circuits can have virtual SNCP segments if the source or destination is not

in the SNCP domain. This restriction also applies after circuit creation; therefore, if you create a

circuit with SNCP segments, Ethernet drops cannot exist anywhere on the SNCP segment

(Figure

Figure 11-10

Source

Low-order tunnels cannot be the endpoint of an SNCP segment. A SNCP segment endpoint is where

•

the SNCP selector resides.

If you provision full path protection, CTC verifies that the route selection is protected at all segments.

A route can have multiple protection domains with each domain protected by a different scheme.

Table 11-9

combination is invalid and generates an error.

Table 11-9

Connection Type

SNCP

Double SNCP

78-18119-01

Ethernet Shared Packet Ring Routing

Ethernet source

Node 1

Node 3

11-10).

Ethernet and SNCP

Node 2

Node 5

Node 6

SNCP Segment

Node 7

Node 8

Legal

through

Table 11-12 on page 11-24

Bidirectional VC/TUG/Regular Multicard EtherSwitch/Point-to-Point (Straight)

Ethernet Circuits

Number of

Inbound Links

—

Node 2

Node 4

Ethernet destination

Source

Drop

Node 11

summarize the available node connections. Any other

Number of

Outbound Links

Number of Sources

—

Cisco ONS 15454 SDH Reference Manual, R8.5

11.14 Manual Circuit Routing