https://community.extremenetworks.com/t5/extremeswitching-ers/cascadded-switches-ers4950/m-p/63871#M33 Hello,<BR /><BR />I installed 2 switches like this :<BR /><BR /> <P>---------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------</P> <P>&nbsp;&nbsp;&nbsp;&nbsp;VSP&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ------------------------&nbsp;&nbsp; (1/49)&nbsp; &nbsp; &nbsp; &nbsp;SW1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(1/50) --------------------------(1/49)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; STACK2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P> <P>---------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------&nbsp;<BR /><BR />the problem is that I can not ping STACK2. they are both configured with <SPAN style="text-decoration: underline"><STRONG>SPBM</STRONG></SPAN>.<BR /><BR />But, when I connect STACK2 directly to VSP, I can ping it.<BR /><BR />both Switches are present in isis adjency and topology. I guess it's not a problem of ISIS or SPBM configuration<BR /><BR />I can also ping STACK2 from SW1 and SW1 from STACK2.<BR /><BR />they got the same default gateway and I can not ping the gateway from STACK2.&nbsp;<BR /><BR />Thanks for your help<BR /><BR /><BR /><BR /><BR /></P> Tue, 15 Feb 2022 20:50:18 GMT Hatem 2022-02-15T20:50:18Z https://community.extremenetworks.com/t5/extremeswitching-ers/cascadded-switches-ers4950/m-p/63871#M33 Hello,<BR /><BR />I installed 2 switches like this :<BR /><BR /> <P>---------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------</P> <P>&nbsp;&nbsp;&nbsp;&nbsp;VSP&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ------------------------&nbsp;&nbsp; (1/49)&nbsp; &nbsp; &nbsp; &nbsp;SW1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(1/50) --------------------------(1/49)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; STACK2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P> <P>---------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -----------------------------------------&nbsp;<BR /><BR />the problem is that I can not ping STACK2. they are both configured with <SPAN style="text-decoration: underline"><STRONG>SPBM</STRONG></SPAN>.<BR /><BR />But, when I connect STACK2 directly to VSP, I can ping it.<BR /><BR />both Switches are present in isis adjency and topology. I guess it's not a problem of ISIS or SPBM configuration<BR /><BR />I can also ping STACK2 from SW1 and SW1 from STACK2.<BR /><BR />they got the same default gateway and I can not ping the gateway from STACK2.&nbsp;<BR /><BR />Thanks for your help<BR /><BR /><BR /><BR /><BR /></P> Tue, 15 Feb 2022 20:50:18 GMT https://community.extremenetworks.com/t5/extremeswitching-ers/cascadded-switches-ers4950/m-p/63871#M33 Hatem 2022-02-15T20:50:18Z https://community.extremenetworks.com/t5/extremeswitching-ers/cascadded-switches-ers4950/m-p/63872#M34 Hello Hatem,<BR /><BR />You should disable the overload parameter on SW1.&nbsp;<BR />Trafic can't go through with it.&nbsp;<BR /><BR />Regards,<BR />Théo Wed, 16 Feb 2022 10:42:52 GMT https://community.extremenetworks.com/t5/extremeswitching-ers/cascadded-switches-ers4950/m-p/63872#M34 TQU 2022-02-16T10:42:52Z