topic Re: VSP and ERS Network challenge in ExtremeSwitching (ERS)

VSP and ERS Network challenge

Klenan — Thu, 31 Dec 2020 05:47:31 GMT

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.

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Thu, 31 Dec 2020 23:39:26 GMT

Klenan,

You need to specify the ERS model.

You’ll probably have to enable IGMP and IGMP snooping on the ERS ports and multicast over SPBM on the VSP if you need to route the multicast traffic.

Are you using Fabric Connect on the ERS or Fabric Attach?

Mig

Re: VSP and ERS Network challenge

EXTR_Paul — Sun, 03 Jan 2021 00:04:39 GMT

So it worked fine, then didn’t work, worked, now didn’t work???

Intermittent issues just screams Networking Loop or Duplicate IP address.

From my experience a lot of CCTV integrators like using Static IPs on cameras versus DHCP.

Check the logs of the VSP core switch.

VSP command “Show log file tail” will show the logs from newest to oldest.

ERS command “Show log sort-rerverse” will show the logs from newest to oldest.

Are you are running MLTs from the VSP to the ERS edge switches.
If YES, take down one link from each ERS to see if network services gets restored.

If that corrects the issue then start double checking your topology, MLT config.

You can also consider setting up SLPP.

Re: VSP and ERS Network challenge

Klenan — Mon, 04 Jan 2021 19:22:09 GMT

Hello Miguel, these have all been enabled and i am using Fabric Connect.

Re: VSP and ERS Network challenge

Klenan — Mon, 04 Jan 2021 19:30:55 GMT

Hi PAul, yes i am running MLTs from VSP to the ERS so i’d run that test. i would try these and revert.

Thanks

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Mon, 04 Jan 2021 19:58:14 GMT

Kleenan,

Could you share a topology diagram showing the switches, where the multicast server and clients are connected? We would also need the VLAN’s and subnets used.

I will then check on a production network with FC+multicast to share the parameters using IGMP.

Mig

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Mon, 04 Jan 2021 20:22:55 GMT

Kleenan,

Is it ERS48xx or ERS49xx series?

Mig

Re: VSP and ERS Network challenge

Klenan — Tue, 05 Jan 2021 18:37:48 GMT

Hello Mig,

please find the image attached as requested. Plus the multicast server is the IPTV one. The IPTV network is on VLAN 40 and running on 192.168.100.0/24

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Tue, 05 Jan 2021 21:07:48 GMT

Hi Kleenan,

Are the multicast client and servers in the same VLAN?

Mig

Re: VSP and ERS Network challenge

Klenan — Tue, 05 Jan 2021 21:15:20 GMT

Hi Mig,

So another contractor handled the IPTV and insisted on deploying their own IPs on the VLAN so i just fed their devices onto that VLAN. So yes they are sitting in the same VLAN

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Tue, 05 Jan 2021 22:02:46 GMT

Kleenan,

Last important question, do you run ERS4800 or ERS4900?

Mig

Re: VSP and ERS Network challenge

Klenan — Tue, 05 Jan 2021 22:30:50 GMT

Hi Mig,

ERS3626GTS

Thanks

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Tue, 05 Jan 2021 22:33:51 GMT

the ERS36xx doesn’t support Fabric Connect

Mig

Re: VSP and ERS Network challenge

Klenan — Tue, 05 Jan 2021 22:37:12 GMT

My bad...there’s no Fabric config on there

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Tue, 05 Jan 2021 22:40:16 GMT

Klenan,

This simplify the setup.

Can we agree that:

all the multicast clients and servers are on the same VLAN
The multicast VLAN is stretched on all the switches
1. This mean that the multicast traffic is not routed.
The multicast server is the IPTV server and CCTV server

Mig

Re: VSP and ERS Network challenge

Klenan — Tue, 05 Jan 2021 22:46:03 GMT

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

Re: VSP and ERS Network challenge

Miguel-Angel_RO — Tue, 05 Jan 2021 22:59:58 GMT

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

Re: VSP and ERS Network challenge

Klenan — Fri, 08 Jan 2021 17:49:15 GMT

CORE:1#enable
CORE:1#
CORE:1#show ip igmp access
CORE:1#JµÁ Access - GlobalRouter
====================================================================================================
INTERFACE  GRP PREFIX       HOSTADDR         HOSTMASK         ACCESSMODE
----------------------------------------------------------------------------------------------------

0 out of 0 entries displayed
CORE:1#
CORE:1#






CORE:1#
CORE:1#show ip igmp group
CORE:1#                Igmp Group - GlobalRouter
====================================================================================================
GRPADDR         INPORT          MEMBER          EXPIRATION TYPE       L2ISID
----------------------------------------------------------------------------------------------------
239.0.0.0       V40-1/18        192.168.101.117 2          Dynamic    40
239.0.0.0       V40-1/18        192.168.101.118 2          Dynamic    40
239.0.0.0       V40-1/16        192.168.101.166 2          Dynamic    40
239.0.0.0       V40-1/16        192.168.101.174 2          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.181 1          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.183 1          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.184 1          Dynamic    40
239.0.0.0       V40-1/16        192.168.101.185 1          Dynamic    40
239.0.0.0       V40-1/16        192.168.101.186 1          Dynamic    40
239.0.0.0       V40-1/16        192.168.101.189 1          Dynamic    40
239.0.0.0       V40-1/16        192.168.101.194 1          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.195 2          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.196 0          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.199 1          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.207 1          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.208 2          Dynamic    40
239.0.0.0       V40-1/16        192.168.101.209 1          Dynamic    40

239.0.0.0       V40-1/17        192.168.101.211 1          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.213 2          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.214 1          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.218 260        Dynamic    40
239.0.0.0       V40-1/17        192.168.101.219 260        Dynamic    40
239.0.0.0       V40-1/17        192.168.101.220 1          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.223 1          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.225 2          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.235 1          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.236 2          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.239 1          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.243 260        Dynamic    40
239.0.0.0       V40-1/17        192.168.101.244 1          Dynamic    40
239.0.0.0       V40-1/17        192.168.101.250 1          Dynamic    40
239.0.0.0       V40-1/15        192.168.101.253 2          Dynamic    40
239.10.7.1      V40-1/15        192.168.101.179 168        Dynamic    40
239.10.7.1      V40-1/20        192.168.101.234 169        Dynamic    40
239.10.8.1      V40-1/16        192.168.101.207 239        Dynamic    40
239.10.8.1      V40-1/15        192.168.101.212 238        Dynamic    40
239.10.8.1      V40-1/17        192.168.101.245 239        Dynamic    40
239.10.20.10    V40-1/16        192.168.101.193 204        Dynamic    40
239.10.20.10    V40-1/18        192.168.101.205 205        Dynamic    40
239.10.20.10    V40-1/17        192.168.101.217 204        Dynamic    40

--More-- (q = quit) V40-1/16        192.168.101.160 178        Dynamic    40
239.10.20.73    V40-1/17        192.168.101.232 240        Dynamic    40
239.10.20.73    V40-1/17        192.168.101.238 241        Dynamic    40
239.10.20.78    V40-1/17        192.168.101.240 249        Dynamic    40
239.255.255.250 V40-1/18        192.168.101.117 147        Dynamic    40
239.255.255.250 V40-1/18        192.168.101.118 145        Dynamic    40
239.255.255.250 V40-1/16        192.168.101.160 150        Dynamic    40
239.255.255.250 V40-1/16        192.168.101.166 148        Dynamic    40
239.255.255.250 V40-1/16        192.168.101.174 145        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.179 149        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.183 151        Dynamic    40
239.255.255.250 V40-1/16        192.168.101.186 151        Dynamic    40
239.255.255.250 V40-1/16        192.168.101.193 150        Dynamic    40
239.255.255.250 V40-1/16        192.168.101.194 150        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.195 148        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.196 144        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.199 153        Dynamic    40
239.255.255.250 V40-1/18        192.168.101.205 146        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.207 151        Dynamic    40
239.255.255.250 V40-1/16        192.168.101.207 152        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.209 144        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.211 145        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.212 149        Dynamic    40

239.255.255.250 V40-1/15        192.168.101.214 143        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.217 144        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.220 150        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.225 149        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.227 144        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.232 144        Dynamic    40
239.255.255.250 V40-1/20        192.168.101.234 145        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.238 143        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.239 143        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.240 151        Dynamic    40
239.255.255.250 V40-1/17        192.168.101.245 145        Dynamic    40
239.255.255.250 V40-1/15        192.168.101.253 147        Dynamic    40

75 out of 75 group Receivers displayed
Total number of unique groups 9
CORE:1#
CORE:1#





CORE:1#
CORE:1#
CORE:1#show ip igmp interface

====================================================================================================
                         Igmp Interface - GlobalRouter
====================================================================================================
       QUERY              OPER            QUERY   WRONG              LASTMEM
IF     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                 10
V20    125   inact  2     2    0.0.0.0    100     0     0     2      10                 20
V30    125   inact  2     2    0.0.0.0    100     0     0     2      10                 30
V40    125   active 2     2    192.168.100.191 100     0     79753678 2      10      snoop      40
V50    125   inact  2     2    0.0.0.0    100     0     0     2      10                 50

5 out of 5 entries displayed
CORE: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   DISCOVERED
ID              INTERVAL   INTERVAL   INTERVAL       ADV        INTERVAL   RTR PORTS
------------------------------------------------------------------------------------------
10     Disable  20         15         2              3          60
20     Disable  20         15         2              3          60
30     Disable  20         15         2              3          60
40     Disable  20         15         2              3          60
50     Disable  20         15         2              3          60

5 out of 1 entries displayed
CORE: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                                     0
V20     false   false   false                                     0
V30     false   false   false                                     0
V40     true    true    false                                     0
V50     false   false   false                                     0

IFINDEX SNOOP   SNOOP           DYNAMIC   COMPATIBILITY
        QUERIER QUERIER         DOWNGRADE MODE
        ENABLE  ADDRESS         VERSION
----------------------------------------------------------------------------------------------------
V10     false   0.0.0.0         enable    disable
V20     false   0.0.0.0         enable    disable
V30     false   0.0.0.0         enable    disable
V40     true    192.168.100.191 enable    disable
V50     false   0.0.0.0         enable    disable

--More-- (q = qui
5 out of 5 entries displayed
CORE:1#
CORE:1#


IPTV_Switch#
IPTV_Switch#show running-config module igmp

interface vlan 35
ip igmp snooping
exit
interface vlan 40
ip igmp snooping
exit
IPTV_Switch#
IPTV_Switch#




IPTV_Switch#
IPTV_Switch#
IPTV_Switch#show ip igmp interface vlan 40
     Query      Oper                 Query   Wrong              LastMbr Send

VLAN Intvl Vers Vers Querier         MaxRspT Query Joins Robust Query   Query M
ode
---- ----- ---- ---- --------------- ------- ----- ----- ------ ------- ----- -
---------
40   125   2    2    192.168.100.191 100     0     491042 2      10      No
IPTV_Switch#
IPTV_Switch#





IPTV_Switch#
IPTV_Switch#
IPTV_Switch#show ip igmp group
Group Address   VLAN Member Address  Expiration Type    In Port
--------------- ---- --------------- ---------- ------- -----------
239.10.7.1      40   192.168.101.234 188        Dynamic 18
239.255.255.250 40   192.168.101.234 152        Dynamic 18
IPTV_Switch#
IPTV_Switch#
IPTV_Switch#



IPTV_Switch#
IPTV_Switch#
IPTV_Switch#show ip igmp cache
Group Address  Vlan ID Last Reporter   Expiration V1 Host Timer Type
-------------- ------- --------------- ---------- ------------- -------
239.10.7.1      40      -64.168.101.234 244        0          Dynamic
239.255.255.250 40      -64.168.101.234 241        0          Dynamic
IPTV_Switch#
IPTV_Switch#

Re: VSP and ERS Network challenge

bar — Wed, 27 Jan 2021 19:12:53 GMT

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.