Configuration Guide

Table Of Contents
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October 2021
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22.10.6.5 Verify multicast TLV’s
Assuming we have a sender via switch 8007 and receivers via the two SMLT clusters. TLV 185 in
relationship to switch 8007 should have the Tx bit set and also send TLV 144 with the Tx bit set. Each
multicast group should have its own unique data ISID with a value of 1600000x. The receiver switches
(9001, 9002, 8005, and 8006) should have TLV 144 with the Rx bit set.
Step 1 - Verify IP multicast source, group addresses, and Tx bit set on the BEB bridge
where the multicast source is located via TLV 185
show isis lsdb tlv 185 detail
Results: From 4001 perspective taken from 8007
4001:1#show isis lsdb sysid 00e0.7bb3.07df tlv 185 detail
================================================================================
ISIS LSDB (DETAIL)
================================================================================
Level-1 LspID: 00e0.7bb3.07df.00-00 SeqNum: 0x000002de Lifetime: 981
Chksum: 0x5251 PDU Length: 443
Host_name: 8007
Attributes: IS-Type 1
TLV:185 SPBM IPVPN :
VSN ISID:2002254
BVID 4051
Metric:0 q
IP Source Address: 192.168.133.100
Group Address : 239.1.1.1
Data ISID : 16000005
TX : 1
Step 2 - Verify on the BEB bridges where the multicast receivers are located via TLV 144,
the Rx bit is set with a B-MAC of 03-01-07-00-00-00 (03 indicated multicast while 01-07 is
the Nick Name of BEB bridge 8007 with the multicast source). On the BEB bridges where
the source is located, the Tx bit should be set
show isis lsdb tlv 144 detail
show isis lsdb lspid tlv 144 sub-tlv 3 detail
show isis lsdb lspid <lsp id> tlv 144 detail
show isis lsdb lspid <lsp id> tlv 144 sub-tlv 3 detail