Support for Alternate Stacking Ports

Each logical stacking port is mapped to one physical data port that operates as an alternate stacking port when the stacking protocol is enabled with the stacking-support option.

Switch Support for Alternate Stacking Ports

Summit Switch Model Number	Summit Switch Option Card	Alternate Port for Stack Port 1	Alternate Port for Stack Port 2	Stacking-Support Option Control	Stacking Port Selection Control
X440-24t-10G X440-24p-10G X440-24x-10G	None	25	26	Yes	No
X440-48t-10G X440-48p-10G	None	49	50	Yes	No
X450-G2-24t-10GE4 X450-G2-24p-10GE4 X450-G2-48t-10GE4 X450-G2-48p-10GE4		27 27 51 51	28 28 52 52	Yes	Yes
X460-48t X460-48p	XGM3-2sf or XGM3S-2sf or XGM3S-2xf	S1	S2	No	Yes
X460-24t X460-24x X460-24p	XGM3-2sf or XGM3S-2sf or XGM3S-2xf	S1	S2	No	Yes
X460-48x E4G-400	XGM3S-2sf or XGM3S-2xf	S1	S2	No	Yes
X460-G2-24t-1G X460-G2-24p-1G X460-G2-48t-1G X460-G2-48p-1G	VIM-2t or VIM-2x	33 33 53 53	34 34 54 54	Yes	Yes
X460-G2-24p-10G X460-G2-24t-10G X460-G2-24x-10G X460-G2-48p-10G X460-G2-48t-10G X460-G2-48x-10G	None	31 31 31 51 51 51	32 32 32 52 52 52	Yes	Yes
X480-48t X480-48x	VIM2-10G4X	S3	S4	Yes	No
	VIM2-SummitStack	N/A	N/A	N/A	N/A
	VIM2-SummitStack-V80	N/A	N/A	N/A	N/A
	VIM2-SummitStack128	N/A	N/A	N/A	N/A
X480-24x	VIM2-10G4X	S3	S4	Yes	No
	VIM2-SummitStack	25	26	No	Yes
	VIM2-SummitStack-V80	25	26	No	Yes
	VIM2-SummitStack128	25	26	No	Yes
	None	25	26	Yes	No
X670-48x	None Note: Ports 45 and 46 are not available as data ports when the alternate stacking ports are used.	47	48	Yes	Yes
X670-48x	Note: Ports 45 and 46 are not available as data ports when the alternate stacking ports are used.
X670V-48x	None	47	48	Yes	Yes
X670V-48t	None	47 (fiber only)	48 (fiber only)	Yes	Yes
X670-G2-48x-4q	None	47	48	Yes	Yes
X670-G2-72x	None	71	72	Yes	Yes
X770-32q	None	103	104	Yes	Yes

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