VSP and ERS Network challenge
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12-30-2020 09:47 PM
Hello,
so i have a VSP from which i have setup a few VLANs onto stacked ERSs on a number of floors, i can reach all switches on the network and almost all the VLANs are fine; but i have two main issues:
- The IPTv VLAN has been acting up lately; the server has been connected to a port on a dedicated ERSs switch having the same VLAN. A few days ago, i noticed only the TV connected to that same switch is working fine while the rest can’t communicate with the server; the client called lastnight to mention it was back to normal only to call again this morning that TVs are no longer communicating.
- I have also noticed all the lights on the switches are blinking really fast especially the fiber uplink ones some of which are even amber in color.
18 REPLIES 18
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01-27-2021 11:12 AM
Given that all your TV clients are on the same vlan, so multicast routing is not required I would remove all multicast config. The switch will flood multicast packets within the vlan and everything should work.
If it does not work in this mode, then you can start looking for duplicate IPs etc. in the switch logs as suggested earlier.
Good luck.
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01-08-2021 09:49 AM
CORE:1#enableCORE:1#CORE:1#show ip igmp accessCORE:1#JµÁ Access - GlobalRouter====================================================================================================INTERFACE GRP PREFIX HOSTADDR HOSTMASK ACCESSMODE----------------------------------------------------------------------------------------------------0 out of 0 entries displayedCORE:1#CORE:1#CORE:1#CORE:1#show ip igmp groupCORE:1# Igmp Group - GlobalRouter====================================================================================================GRPADDR INPORT MEMBER EXPIRATION TYPE L2ISID----------------------------------------------------------------------------------------------------239.0.0.0 V40-1/18 192.168.101.117 2 Dynamic 40239.0.0.0 V40-1/18 192.168.101.118 2 Dynamic 40239.0.0.0 V40-1/16 192.168.101.166 2 Dynamic 40239.0.0.0 V40-1/16 192.168.101.174 2 Dynamic 40239.0.0.0 V40-1/15 192.168.101.181 1 Dynamic 40239.0.0.0 V40-1/17 192.168.101.183 1 Dynamic 40239.0.0.0 V40-1/15 192.168.101.184 1 Dynamic 40239.0.0.0 V40-1/16 192.168.101.185 1 Dynamic 40239.0.0.0 V40-1/16 192.168.101.186 1 Dynamic 40239.0.0.0 V40-1/16 192.168.101.189 1 Dynamic 40239.0.0.0 V40-1/16 192.168.101.194 1 Dynamic 40239.0.0.0 V40-1/15 192.168.101.195 2 Dynamic 40239.0.0.0 V40-1/15 192.168.101.196 0 Dynamic 40239.0.0.0 V40-1/15 192.168.101.199 1 Dynamic 40239.0.0.0 V40-1/15 192.168.101.207 1 Dynamic 40239.0.0.0 V40-1/17 192.168.101.208 2 Dynamic 40239.0.0.0 V40-1/16 192.168.101.209 1 Dynamic 40239.0.0.0 V40-1/17 192.168.101.211 1 Dynamic 40239.0.0.0 V40-1/15 192.168.101.213 2 Dynamic 40239.0.0.0 V40-1/15 192.168.101.214 1 Dynamic 40239.0.0.0 V40-1/17 192.168.101.218 260 Dynamic 40239.0.0.0 V40-1/17 192.168.101.219 260 Dynamic 40239.0.0.0 V40-1/17 192.168.101.220 1 Dynamic 40239.0.0.0 V40-1/15 192.168.101.223 1 Dynamic 40239.0.0.0 V40-1/15 192.168.101.225 2 Dynamic 40239.0.0.0 V40-1/17 192.168.101.235 1 Dynamic 40239.0.0.0 V40-1/17 192.168.101.236 2 Dynamic 40239.0.0.0 V40-1/17 192.168.101.239 1 Dynamic 40239.0.0.0 V40-1/17 192.168.101.243 260 Dynamic 40239.0.0.0 V40-1/17 192.168.101.244 1 Dynamic 40239.0.0.0 V40-1/17 192.168.101.250 1 Dynamic 40239.0.0.0 V40-1/15 192.168.101.253 2 Dynamic 40239.10.7.1 V40-1/15 192.168.101.179 168 Dynamic 40239.10.7.1 V40-1/20 192.168.101.234 169 Dynamic 40239.10.8.1 V40-1/16 192.168.101.207 239 Dynamic 40239.10.8.1 V40-1/15 192.168.101.212 238 Dynamic 40239.10.8.1 V40-1/17 192.168.101.245 239 Dynamic 40239.10.20.10 V40-1/16 192.168.101.193 204 Dynamic 40239.10.20.10 V40-1/18 192.168.101.205 205 Dynamic 40239.10.20.10 V40-1/17 192.168.101.217 204 Dynamic 40--More-- (q = quit) V40-1/16 192.168.101.160 178 Dynamic 40239.10.20.73 V40-1/17 192.168.101.232 240 Dynamic 40239.10.20.73 V40-1/17 192.168.101.238 241 Dynamic 40239.10.20.78 V40-1/17 192.168.101.240 249 Dynamic 40239.255.255.250 V40-1/18 192.168.101.117 147 Dynamic 40239.255.255.250 V40-1/18 192.168.101.118 145 Dynamic 40239.255.255.250 V40-1/16 192.168.101.160 150 Dynamic 40239.255.255.250 V40-1/16 192.168.101.166 148 Dynamic 40239.255.255.250 V40-1/16 192.168.101.174 145 Dynamic 40239.255.255.250 V40-1/15 192.168.101.179 149 Dynamic 40239.255.255.250 V40-1/17 192.168.101.183 151 Dynamic 40239.255.255.250 V40-1/16 192.168.101.186 151 Dynamic 40239.255.255.250 V40-1/16 192.168.101.193 150 Dynamic 40239.255.255.250 V40-1/16 192.168.101.194 150 Dynamic 40239.255.255.250 V40-1/15 192.168.101.195 148 Dynamic 40239.255.255.250 V40-1/15 192.168.101.196 144 Dynamic 40239.255.255.250 V40-1/15 192.168.101.199 153 Dynamic 40239.255.255.250 V40-1/18 192.168.101.205 146 Dynamic 40239.255.255.250 V40-1/15 192.168.101.207 151 Dynamic 40239.255.255.250 V40-1/16 192.168.101.207 152 Dynamic 40239.255.255.250 V40-1/17 192.168.101.209 144 Dynamic 40239.255.255.250 V40-1/17 192.168.101.211 145 Dynamic 40239.255.255.250 V40-1/15 192.168.101.212 149 Dynamic 40239.255.255.250 V40-1/15 192.168.101.214 143 Dynamic 40239.255.255.250 V40-1/17 192.168.101.217 144 Dynamic 40239.255.255.250 V40-1/17 192.168.101.220 150 Dynamic 40239.255.255.250 V40-1/15 192.168.101.225 149 Dynamic 40239.255.255.250 V40-1/15 192.168.101.227 144 Dynamic 40239.255.255.250 V40-1/17 192.168.101.232 144 Dynamic 40239.255.255.250 V40-1/20 192.168.101.234 145 Dynamic 40239.255.255.250 V40-1/17 192.168.101.238 143 Dynamic 40239.255.255.250 V40-1/17 192.168.101.239 143 Dynamic 40239.255.255.250 V40-1/17 192.168.101.240 151 Dynamic 40239.255.255.250 V40-1/17 192.168.101.245 145 Dynamic 40239.255.255.250 V40-1/15 192.168.101.253 147 Dynamic 4075 out of 75 group Receivers displayedTotal number of unique groups 9CORE:1#CORE:1#CORE:1#CORE:1#CORE:1#show ip igmp interface==================================================================================================== Igmp Interface - GlobalRouter==================================================================================================== QUERY OPER QUERY WRONG LASTMEMIF INTVL STATUS VERS. VERS QUERIER MAXRSPT QUERY JOINS ROBUST QUERY MODE L2ISID----------------------------------------------------------------------------------------------------V10 125 inact 2 2 0.0.0.0 100 0 0 2 10 10V20 125 inact 2 2 0.0.0.0 100 0 0 2 10 20V30 125 inact 2 2 0.0.0.0 100 0 0 2 10 30V40 125 active 2 2 192.168.100.191 100 0 79753678 2 10 snoop 40V50 125 inact 2 2 0.0.0.0 100 0 0 2 10 505 out of 5 entries displayedCORE:1#CORE:1#CORE:1#CORE:1#CORE:1#show ip igmp mrdisc==================================================================================================== Igmp Mrdisc - GlobalRouter====================================================================================================VLAN MRDISC MAX ADV MIN ADV MAX INIT ADV MAX INIT NBR DEAD DISCOVEREDID INTERVAL INTERVAL INTERVAL ADV INTERVAL RTR PORTS------------------------------------------------------------------------------------------10 Disable 20 15 2 3 6020 Disable 20 15 2 3 6030 Disable 20 15 2 3 6040 Disable 20 15 2 3 6050 Disable 20 15 2 3 605 out of 1 entries displayedCORE:1#CORE:1#CORE:1#CORE:1#CORE:1#CORE:1#show ip igmp snooping==================================================================================================== Igmp Snooping - GlobalRouter====================================================================================================IFINDEX SNOOP PROXY SSM STATIC ACTIVE MROUTER ENABLE SNOOP SNOOP MROUTER MROUTER EXPIRATION ENABLE ENABLE PORTS PORTS TIME----------------------------------------------------------------------------------------------------V10 false false false 0V20 false false false 0V30 false false false 0V40 true true false 0V50 false false false 0IFINDEX SNOOP SNOOP DYNAMIC COMPATIBILITY QUERIER QUERIER DOWNGRADE MODE ENABLE ADDRESS VERSION----------------------------------------------------------------------------------------------------V10 false 0.0.0.0 enable disableV20 false 0.0.0.0 enable disableV30 false 0.0.0.0 enable disableV40 true 192.168.100.191 enable disableV50 false 0.0.0.0 enable disable--More-- (q = qui5 out of 5 entries displayedCORE:1#CORE:1#IPTV_Switch#IPTV_Switch#show running-config module igmpinterface vlan 35ip igmp snoopingexitinterface vlan 40ip igmp snoopingexitIPTV_Switch#IPTV_Switch#IPTV_Switch#IPTV_Switch#IPTV_Switch#show ip igmp interface vlan 40 Query Oper Query Wrong LastMbr SendVLAN Intvl Vers Vers Querier MaxRspT Query Joins Robust Query Query Mode---- ----- ---- ---- --------------- ------- ----- ----- ------ ------- ----- ----------40 125 2 2 192.168.100.191 100 0 491042 2 10 NoIPTV_Switch#IPTV_Switch#IPTV_Switch#IPTV_Switch#IPTV_Switch#show ip igmp groupGroup Address VLAN Member Address Expiration Type In Port--------------- ---- --------------- ---------- ------- -----------239.10.7.1 40 192.168.101.234 188 Dynamic 18239.255.255.250 40 192.168.101.234 152 Dynamic 18IPTV_Switch#IPTV_Switch#IPTV_Switch#IPTV_Switch#IPTV_Switch#IPTV_Switch#show ip igmp cacheGroup Address Vlan ID Last Reporter Expiration V1 Host Timer Type-------------- ------- --------------- ---------- ------------- -------239.10.7.1 40 -64.168.101.234 244 0 Dynamic239.255.255.250 40 -64.168.101.234 241 0 DynamicIPTV_Switch#IPTV_Switch#
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01-05-2021 02:59 PM
Klenan,
Could you share a config from an ERS from the xth Floor and from the ERS hosting one of the multicast server?
What is important is the section igmp
- show running-config module igmp
- show ip igmp interface vlan 40
- show ip igmp interface vlan 50
- show ip igmp group
- show ip igmp cache
On the VSP:
- show ip igmp access
- show ip igmp group
- show ip igmp interface
- show ip igmp mrdisc
- show ip igmp snooping
Mig
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01-05-2021 02:46 PM
- all the multicast clients and servers are on the same VLAN - Two separate VLANs 40(IPTV) and 50(CCTV - No issues)
- The multicast VLAN is stretched on all the switches - Yes
- The multicast server is the IPTV server and CCTV server - Two separate servers feeding into two different VLANs
