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• Verifying MPLS Decapsulation    

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• scio counter
• Enabling Inspection of MPLS Traffic
• Disabling MPLS Decapsulation

Verifying MPLS Decapsulation

Purpose

You can use the IDP command-line interface to verify the IDP engine processes Multiprotocol Label Switching (MPLS) frames.

Action

To verify MPLS traffic has been processed:

1. Log into the CLI as admin and enter su - to switch to root.
2. Enter the following command to display traffic counters:
   
   

   [root@defaulthost admin]# scio counter get kpp

   Name                            Value
   sc_kpp_bad_ip_header            0
   sc_kpp_ip_options               0
   sc_kpp_decapsulate              0
   sc_kpp_gre_decapsulate          0
   sc_kpp_ppp_decapsulate          0
   sc_kpp_gtp_decapsulate          0
   sc_kpp_gtp_flow                 0
   sc_kpp_tcpdecomp_uncompressed_i 0
   sc_kpp_tcpdecomp_compressed_ip  0
   sc_kpp_deferred_send            0
   sc_kpp_send_in_ip               0
   sc_kpp_ttl_error                0
   sc_kpp_routing_loop             0
   sc_kpp_stp_drop                 0
   sc_kpp_drop                     0
   sc_kpp_drop_session             0
   sc_kpp_no_route                 0
   sc_kpp_flood_ip                 0
   sc_kpp_push_eth_hdr_failed      0
   sc_kpp_busy_inc                 0
   sc_kpp_busy_dec                 0
   sc_kpp_xmit_not_ready           0
   sc_kpp_trylock_dev_failed       0
   sc_kpp_hard_start_xmit_failed   0
   sc_kpp_netif_queue_stopped      0
   sc_kpp_vlan_pskb_expand_head    0
   sc_kpp_packet_from_szp          0
   sc_kpp_packet_freed             6
   sc_kpp_packet_from_pool         6
   sc_kpp_packet_copied            0
   sc_kpp_mpls                     0
   sc_kpp_clone_stopped            0
   sc_kpp_clone                    0
   sc_kpp_jpkt_free                6
   sc_kpp_tx_hold                  0
   sc_kpp_fdrop                    0
   

   The sc_kpp_mpls counter indicates the number of MPLS frames processed.

You can use Network and Security Manager (NSM) to filter and sort logs based on MPLS label. The MPLS label appears in the Details column, in the following format: label =nnnnn,mmmm. Figure 1 shows MPLS label information in logs.

To display the NSM Log Viewer:

1. Connect to NSM.
2. In the NSM navigation tree, select Investigate > Log Viewer > IDP/DI.