Use the following commands to check TLV information.
For Layer 2 VSN with IP multicast over Fabric Connect, TLV 185 on the BEB where the source is located, displays the multicast source and group addresses and has the Tx bit set. Each multicast group has its own unique data I-SID with a value between 16,000,000 to 16,512,000. TLV 144 on the BEB bridge, where the sender is located, has the Tx bit set. All BEB bridges, where a receiver exists, have the Rx bit set.
show isis lsdb tlv <1–236> [sub-tlv <1–3>] [detail] [home|remote]
show isis lsdb lspid <xxxx.xxxx.xxxx.xx-xx> tlv <1–236> [sub-tlv <1–3>] [detail] [home|remote]
Switch:1# show isis lsdb tlv 185 detail ================================================================================ ISIS LSDB (DETAIL) ================================================================================ -------------------------------------------------------------------------------- Level-1LspID: 000c.f803.83df.00-00 SeqNum: 0x000001ae Lifetime: 898 Chksum: 0xcebe PDU Length: 522 Host_name: Switch Attributes: IS-Type 1 TLV:185 SPBM IPVPN : VSN ISID:5010 BVID :10 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.1 Data ISID : 16300001 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.3 Data ISID : 16300003 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.5 Data ISID : 16300005 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.7 Data ISID : 16300007 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.9 Data ISID : 16300009 TX : 1 VSN ISID:5010 BVID :20 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.2 Data ISID : 16300002 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.4 Data ISID : 16300004 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.6 Data ISID : 16300006 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.8 Data ISID : 16300008 TX : 1 Metric:0 IP Source Address: 192.0.2.1 Group Address : 233.252.0.10 Data ISID : 16300010 TX : 1 Switch:1# show isis lsdb lspid 000c.f803.83df.00-05 tlv 144 detail ================================================================================ ISIS LSDB (DETAIL) ================================================================================ -------------------------------------------------------------------------------- Level-1 LspID: 000c.f803.83df.00-00 SeqNum: 0x00000477 Lifetime: 903 Chksum: 0x200b PDU Length: 522 Host_name: Switch Attributes: IS-Type 1 Instance: 0 Metric: 0 B-MAC: 03-00-00-00-00-00 BVID:10 Number of ISID's:5 16000001(Tx),16000003(Tx),16000005(Tx),16000007 (Tx),16000009(Tx) Instance: 0 Metric: 0 B-MAC: 03-00-00-00-00-00 BVID:20 Number of ISID's:5 16000002(Tx),16000004(Tx),16000006(Tx),16000008(Tx),16000010(Tx)