Cisco Multiservice Switching Networks

An AutoRoute control plane can be added to the network. We can connect the BPX-8600 to the IGX-8420 switches with an AutoRoute routing trunk, as well as the BPX-8600 to the MGX-8250 using an AutoRoute feeder trunk.

We start by checking the trunks in the BPX switch, as shown in Example 6-76.

Example 6-76. Displaying the Trunks in a BPX or IGX Switch

P1-b8620 TN Cisco BPX 8620 9.3.30 Nov. 24 2001 09:21 GMT TRK Type Current Line Alarm Status Other End 3.1 OC3 Clear - OK VSI(VSI) 3.3.1 OC3 Clear - OK VSI only 3.3.2 OC3 Clear - OK VSI only 13.3 T3 Clear - OK - 13.4.1 T3 Clear - OK VSI only Last Command: dsptrks Next Command:

You can see that the virtual trunks (VT) are VSI only. Virtual trunks can be used by either VSI (in this case, MPLS) or AutoRoute, but not both simultaneously. VSI only means that a VSI partition exists in the VT, making it unusable by AutoRoute.

On the other hand, for physical trunks, we have either VSI(VSI) or -. The first state means that VPI = 1, which is used by AutoRoute, is included in a VSI resource partition; therefore, it cannot be used by AutoRoute. A dash means that the trunk can be added as an AutoRoute trunk.

We'll now add trunk 13.3, which connects the BPX-8600 with the IGX-8420. Refer to Example 6-77.

Example 6-77. Adding an AutoRoute Trunk

P1-b8620 TN Cisco BPX 8620 9.3.30 Nov. 24 2001 09:21 GMT TRK Type Current Line Alarm Status Other End 3.1 OC3 Clear - OK VSI(VSI) 3.3.1 OC3 Clear - OK VSI only 3.3.2 OC3 Clear - OK VSI only 13.3 T3 Clear - OK P2-i8420/16.1 13.4.1 T3 Clear - OK VSI only Last Command: addtrk 13.3 Next Command:

Finally, we attach the MGX-8250 to the BPX-8600 as an AutoRoute feeder shelf. We use trunk 3.2 in the BPX-8620 and trunk 7.1 in the MGX-8250.

Starting with the PXM-1 configuration, we add the line, up the port (assigning resources to PAR), and configure the line as a trunk. The trunk appears as a PAR interface, as shown in Example 6-78.

Example 6-78. Configuring PAR in a PXM-1 Card

m8250-7a.1.7.PXM.a > addln -sonet 7.1 m8250-7a.1.7.PXM.a > addport 1 1 100 0 4095 100 m8250-7a.1.7.PXM.a > dspparifs slot.port type status vpi vci txRate rxRate --------------------------------------------------------------------------------- 7.1 UNI_IF FAILED 0 to 4095 0 to 65535 353208 353208 7.2 UNI_IF UP 0 to 4095 0 to 65535 353208 353208 7.33 UNI_IF UP 0 to 255 0 to 65535 176604 176604 7.34 UNI_IF UP 0 to 255 0 to 65535 176604 176604 7.35 CLK_IF FAILED 0 to 0 0 to 0 0 0 9.1 UNI_IF UP 0 to 255 0 to 3840 353208 353208 10.1 UNI_IF UP 0 to 255 0 to 3840 353208 353208 m8250-7a.1.7.PXM.a > cnfifastrk 7.1 ftrk m8250-7a.1.7.PXM.a >

On the BPX side, we up trunk 3.2 with uptrk and add the shelf using addshelf as an AAL5 feeder shelf. See Example 6-79.

Example 6-79. Adding an AutoRoute Feeder Shelf

P1-b8620 TN Cisco BPX 8620 9.3.30 Nov. 24 2001 09:27 GMT BPX 8620 Interface Shelf Information Trunk Name Type Part Id Ctrl Id Control_VC Alarm VPI VCIRange 3.1 VSI VSI 1 1 0 40-54 OK 3.2 m8250-7a AAL/5 - - - - MIN Last Command: addshelf 3.2 X Shelf has been added Next Command:

As shown in Example 6-80, the shelf appears in the BPX-8600 display.

Example 6-80. Checking the AR Trunks

P1-b8620 TN Cisco BPX 8620 9.3.30 Nov. 24 2001 09:27 GMT TRK Type Current Line Alarm Status Other End 3.1 OC3 Clear - OK VSI(VSI) 3.2 OC3 Clear - OK m8250-7a(AAL/5) 3.3.1 OC3 Clear - OK VSI only 3.3.2 OC3 Clear - OK VSI only 13.3 T3 Clear - OK P2-i8420/16.1 13.4.1 T3 Clear - OK VSI only Last Command: dsptrks Next Command:

It also appears in the MGX-8250 display. See Example 6-81.

Example 6-81. Displaying the Feeder Shelf Trunk

m8250-7a.1.7.PXM.a > dsptrks TRK Current Alarm Status Other End 7.1 CLEAR P1-b8620 m8250-7a.1.7.PXM.a >