Cisco Multiservice Switching Networks

You can check prefix reachability using the command aesa_ping, as shown in Example 10-28. You ping the BPX-SES PNNI node address from the MGX-8950 PNNI node.

Example 10-28. Using the Command aesa_ping to Verify Reachability

m8950-7b.7.PXM.a > aesa_ping 47.000000000000010001008600.00d058ac2828.01 Ping Got CLI message, index=0 PING: from PNNI - SOURCE ROUTE DTL 1 : Number of (Node/port)elements 3 DTL 1:NODE 1: :64:160:71:0:0::2:0:137:80: Port 1:17111041 DTL 1:NODE 2: :64:160:71:0:0::2:0:136:80: Port 2:16848898 DTL 1:NODE 3: :64:160:71:0:0::1:0:134:0: Port 3:0 Port List : no of ports = 1 Port ID 1:17111041 m8950-7b.7.PXM.a >

Analyzing the command output, you see only one Designated Transit List (DTL) with three elements. This is because an SPG PNNI network is at level 64 (meaning that the 64 leftmost bits from the node ID form the peer group ID).

The only DTL has three nodes, which are at level 64. The node IDs convert the decimal numbers to hexadecimal, as shown in Table 10-2.

The ports are displayed in LIN decimal format. Port 1 is 17111041 (0x1051801 for slot 5 and port 1), and port 2 is 16848898 (0x1011802 for slot 1 and port 2).

The path taken and specified in the DTL is shown in Figure 10-6.

This is a good time to present the command dsppnportidmaps. Some commands such as aesa_ping display the pnports in LIN format. The command dsppnportidmaps can be used to display the mapping between the ASCII PnPort ID representation and the LIN representation, as shown in Example 10-29.

Example 10-29. Using the Command dsppnportidmaps

SES-3a.1.PXM.a > dsppnportidmaps Port Id Logical ID (Dec) Logical ID (Hex) OperStatus 4.3 262912 40300 up 11.2 721408 b0200 up 12.1 786688 c0100 up 12.2 786944 c0200 up SES-3a.1.PXM.a > m8850-7a.7.PXM.a > dsppnportidmaps Port Id Logical ID (Dec) Logical ID (Hex) OperStatus 7.35 17251107 1073b23 up 7.36 17251108 1073b24 up 7.37 17251109 1073b25 up 7.38 17251110 1073b26 up 10.1 17257217 1075301 up 1:1.2:2 16848898 1011802 up 2:1.1:1 16914433 1021801 up 12:1.1:1 17569793 10c1801 up m8850-7a.7.PXM.a >