PNNI Network Verification

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.

Table 10-2. PNNI Node IDs in the aesa_ping Path

Node	PNNI Node ID	Node
Node 1	64:160:47.0000...02008950...	MGX-8950
Node 2	64:160:47.0000...02008850...	MGX-8850
Node 3	64:160:47.0000...01008600...	BPX-8600

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.

Figure 10-6. aesa_ping Path and DTL Through the PNNI Network

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 >