diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4b5df057e..e7939406d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@ v2.4.4 (FUTURE)
 
 ## Enhancements
 
+* [#2168](https://github.com/digitalocean/netbox/issues/2168) - Added Extreme SummitStack interface form factors
 * [#2356](https://github.com/digitalocean/netbox/issues/2356) - Include cluster site as read-only field in VirtualMachine serializer
 * [#2362](https://github.com/digitalocean/netbox/issues/2362) - Implemented custom admin site to properly handle BASE_PATH
 * [#2254](https://github.com/digitalocean/netbox/issues/2254) - Implemented searchability for Rack Groups
diff --git a/netbox/dcim/constants.py b/netbox/dcim/constants.py
index cea56e176e..c412595336 100644
--- a/netbox/dcim/constants.py
+++ b/netbox/dcim/constants.py
@@ -93,6 +93,11 @@
 IFACE_FF_FLEXSTACK = 5100
 IFACE_FF_FLEXSTACK_PLUS = 5150
 IFACE_FF_JUNIPER_VCP = 5200
+IFACE_FF_SUMMITSTACK = 5300
+IFACE_FF_SUMMITSTACK128 = 5310
+IFACE_FF_SUMMITSTACK256 = 5320
+IFACE_FF_SUMMITSTACK512 = 5330
+
 # Other
 IFACE_FF_OTHER = 32767
 
@@ -168,6 +173,10 @@
             [IFACE_FF_FLEXSTACK, 'Cisco FlexStack'],
             [IFACE_FF_FLEXSTACK_PLUS, 'Cisco FlexStack Plus'],
             [IFACE_FF_JUNIPER_VCP, 'Juniper VCP'],
+            [IFACE_FF_SUMMITSTACK, 'Extreme SummitStack'],
+            [IFACE_FF_SUMMITSTACK128, 'Extreme SummitStack-128'],
+            [IFACE_FF_SUMMITSTACK256, 'Extreme SummitStack-256'],
+            [IFACE_FF_SUMMITSTACK512, 'Extreme SummitStack-512'],
         ]
     ],
     [
diff --git a/netbox/dcim/migrations/0062_interface_mtu.py b/netbox/dcim/migrations/0062_interface_mtu.py
index 047f145d38..592f11bb79 100644
--- a/netbox/dcim/migrations/0062_interface_mtu.py
+++ b/netbox/dcim/migrations/0062_interface_mtu.py
@@ -16,4 +16,14 @@ class Migration(migrations.Migration):
             name='mtu',
             field=models.PositiveIntegerField(blank=True, null=True, validators=[django.core.validators.MinValueValidator(1), django.core.validators.MaxValueValidator(65536)], verbose_name='MTU'),
         ),
+        migrations.AlterField(
+            model_name='interface',
+            name='form_factor',
+            field=models.PositiveSmallIntegerField(choices=[['Virtual interfaces', [[0, 'Virtual'], [200, 'Link Aggregation Group (LAG)']]], ['Ethernet (fixed)', [[800, '100BASE-TX (10/100ME)'], [1000, '1000BASE-T (1GE)'], [1150, '10GBASE-T (10GE)'], [1170, '10GBASE-CX4 (10GE)']]], ['Ethernet (modular)', [[1050, 'GBIC (1GE)'], [1100, 'SFP (1GE)'], [1200, 'SFP+ (10GE)'], [1300, 'XFP (10GE)'], [1310, 'XENPAK (10GE)'], [1320, 'X2 (10GE)'], [1350, 'SFP28 (25GE)'], [1400, 'QSFP+ (40GE)'], [1500, 'CFP (100GE)'], [1510, 'CFP2 (100GE)'], [1520, 'CFP4 (100GE)'], [1550, 'Cisco CPAK (100GE)'], [1600, 'QSFP28 (100GE)']]], ['Wireless', [[2600, 'IEEE 802.11a'], [2610, 'IEEE 802.11b/g'], [2620, 'IEEE 802.11n'], [2630, 'IEEE 802.11ac'], [2640, 'IEEE 802.11ad']]], ['FibreChannel', [[3010, 'SFP (1GFC)'], [3020, 'SFP (2GFC)'], [3040, 'SFP (4GFC)'], [3080, 'SFP+ (8GFC)'], [3160, 'SFP+ (16GFC)']]], ['Serial', [[4000, 'T1 (1.544 Mbps)'], [4010, 'E1 (2.048 Mbps)'], [4040, 'T3 (45 Mbps)'], [4050, 'E3 (34 Mbps)']]], ['Stacking', [[5000, 'Cisco StackWise'], [5050, 'Cisco StackWise Plus'], [5100, 'Cisco FlexStack'], [5150, 'Cisco FlexStack Plus'], [5200, 'Juniper VCP'], [5300, 'Extreme SummitStack'], [5310, 'Extreme SummitStack-128'], [5320, 'Extreme SummitStack-256'], [5330, 'Extreme SummitStack-512']]], ['Other', [[32767, 'Other']]]], default=1200),
+        ),
+        migrations.AlterField(
+            model_name='interfacetemplate',
+            name='form_factor',
+            field=models.PositiveSmallIntegerField(choices=[['Virtual interfaces', [[0, 'Virtual'], [200, 'Link Aggregation Group (LAG)']]], ['Ethernet (fixed)', [[800, '100BASE-TX (10/100ME)'], [1000, '1000BASE-T (1GE)'], [1150, '10GBASE-T (10GE)'], [1170, '10GBASE-CX4 (10GE)']]], ['Ethernet (modular)', [[1050, 'GBIC (1GE)'], [1100, 'SFP (1GE)'], [1200, 'SFP+ (10GE)'], [1300, 'XFP (10GE)'], [1310, 'XENPAK (10GE)'], [1320, 'X2 (10GE)'], [1350, 'SFP28 (25GE)'], [1400, 'QSFP+ (40GE)'], [1500, 'CFP (100GE)'], [1510, 'CFP2 (100GE)'], [1520, 'CFP4 (100GE)'], [1550, 'Cisco CPAK (100GE)'], [1600, 'QSFP28 (100GE)']]], ['Wireless', [[2600, 'IEEE 802.11a'], [2610, 'IEEE 802.11b/g'], [2620, 'IEEE 802.11n'], [2630, 'IEEE 802.11ac'], [2640, 'IEEE 802.11ad']]], ['FibreChannel', [[3010, 'SFP (1GFC)'], [3020, 'SFP (2GFC)'], [3040, 'SFP (4GFC)'], [3080, 'SFP+ (8GFC)'], [3160, 'SFP+ (16GFC)']]], ['Serial', [[4000, 'T1 (1.544 Mbps)'], [4010, 'E1 (2.048 Mbps)'], [4040, 'T3 (45 Mbps)'], [4050, 'E3 (34 Mbps)']]], ['Stacking', [[5000, 'Cisco StackWise'], [5050, 'Cisco StackWise Plus'], [5100, 'Cisco FlexStack'], [5150, 'Cisco FlexStack Plus'], [5200, 'Juniper VCP'], [5300, 'Extreme SummitStack'], [5310, 'Extreme SummitStack-128'], [5320, 'Extreme SummitStack-256'], [5330, 'Extreme SummitStack-512']]], ['Other', [[32767, 'Other']]]], default=1200),
+        ),
     ]