Adding an AutoRoute Control Plane | 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 >