Use the following commands to check TLV information.
For a Layer 3 VSN multicast, TLV 185 on the BEB where the source is located displays the multicast source and group addresses and have the Tx bit set. Each multicast group should have 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]
Display TLV information for a Layer 3 VSN with IP Multicast over Fabric Connect:
Switch:1# show isis lsdb tlv 185 detail ================================================================================ ISIS LSDB (DETAIL) ================================================================================ -------------------------------------------------------------------------------- Level-1 LspID: 000c.f803.83df.00-04 SeqNum: 0x000002eb Lifetime: 1113 Chksum: 0x7e3b PDU Length: 556 Host_name: el2 Attributes: IS-Type 1 TLV:185 SPBM IPVPN : VSN ISID:5010 BVID :10 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.1 Data ISID : 16300011 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.3 Data ISID : 16300013 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.5 Data ISID : 16300015 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.7 Data ISID : 16300017 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.9 Data ISID : 16300019 TX : 1 VSN ISID:5010 BVID :20 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.2 Data ISID : 16300012 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.4 Data ISID : 16300014 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.6 Data ISID : 16300016 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.8 Data ISID : 16300018 TX : 1 Metric:0 IP Source Address: 192.0.2.10 Group Address : 233.252.0.10 Data ISID : 16300020 TX : 1