--- title: C9300GX-1 Build description: published: true date: 2026-02-19T20:45:10.926Z tags: editor: markdown dateCreated: 2026-02-19T20:45:10.926Z --- # AT1EU-NEXUS-1 — Cisco Nexus 9300 Configuration ## Overview AT1EU-NEXUS-1 is the **primary** switch in a vPC pair (role priority 10, lower = preferred). It runs NX-OS 10.3(7) and forms a vPC domain with AT1EU-NEXUS-2. The two switches share a vPC peer-link (Po10) across Eth1/47–48, and use out-of-band management (mgmt0 at 192.168.0.1) for the vPC peer-keepalive path. **Key roles of this switch:** - vPC primary (role priority 10) - STP root bridge for management/native VLANs (priority 8192 for VLANs 1, 66) - Layer 3 gateway for Vlan502 (Atom VRF, IP 15.0.2.121/24) - NTP master (stratum 3) - Upstream connections: 500e-X1 (Po3), 500e-X2 (Po4), 9300 (Po124) - Storage connections: AFF300-A (Po127), AFF300-B (Po128), FAS2750-A (Po129), FAS2750-B (Po130), A70-A (Po131), A70-B (Po132) - Compute connections: UCS-A (Po125), UCS-B (Po126) --- ## Cut-and-Paste Configuration ``` version 10.3(7) Bios:version 07.71 switchname AT1EU-NEXUS-1 ! --- QoS: Jumbo Frame Policy --- policy-map type network-qos JUMBO class type network-qos class-default mtu 9216 ! --- VDC Resource Limits --- vdc AT1EU-NEXUS-1 id 1 limit-resource vlan minimum 16 maximum 4094 limit-resource vrf minimum 2 maximum 4096 limit-resource port-channel minimum 0 maximum 511 limit-resource m4route-mem minimum 58 maximum 58 limit-resource m6route-mem minimum 8 maximum 8 ! --- Features --- feature nxapi feature bash-shell feature scp-server cfs eth distribute feature udld feature interface-vlan feature lacp feature vpc feature lldp feature telemetry ! --- RBAC --- role name network-ro rule 2 permit read rule 1 permit command show running-config ! --- Users --- username admin password 5 $5$MFJCIC$AJyskD7vdoVFKK5cTS2lO20omFL4XFrgqNB94qDA5Z2 role network-admin ssh key rsa 2048 ! --- Banner --- banner motd ^ ********************* DOD NOTICE AND CONSENT BANNER ************************* * You are accessing a U.S. Government (USG) Information System (IS) that is * * provided for USG-authorized use only. By using this IS (which includes any* * device attached to this IS), you consent to the following conditions: * *-The USG routinely intercepts and monitors communications on this IS for * * purposes including, but not limited to, penetration testing, COMSEC * * monitoring, network operations and defense, personnel misconduct (PM), * * law enforcement (LE), and counterintelligence (CI) investigations. * *-At any time, the USG may inspect and seize data stored on this IS. * *-Communications using, or data stored on, this IS are not private, are * * subject to routine monitoring, interception, and search, and may be * * disclosed or used for any USGauthorized purpose. * *-This IS includes security measures (e.g., authentication and access * * controls) to protect USG interests--not for your personal benefit or * * privacy. * *-Notwithstanding the above, using this IS does not constitute consent to * * PM, LE or CI investigative searching or monitoring of the content of * * privileged communications, or work product, related to personal * * representation or services by attorneys, psychotherapists, or clergy, and * * their assistants. Such communications and work product are private and * * confidential. See User Agreement for details. * ************************ POC: SIL Network Team **************************** ^ ! --- SSH --- ssh ciphers aes256-gcm ! --- DNS & Domain --- ip domain-lookup ip name-server 15.0.2.128 15.0.2.129 15.32.2.128 ip domain-name atom.dev use-vrf Atom ip name-server 15.0.2.128 15.0.2.129 15.32.2.128 use-vrf Atom ! --- RADIUS --- radius-server host 15.0.11.68 key 7 "V1P-jaynmv" authentication accounting radius-server host 15.32.11.68 key 7 "V1P-jaynmv" authentication accounting aaa group server radius NETMAN_RADIUS server 15.0.11.68 server 15.32.11.68 use-vrf Atom ! --- Management ACL --- ip access-list SWITCH_MGMT 10 permit ip 15.0.11.150/32 any log 20 permit ip 15.0.11.151/32 any log 30 permit ip 15.32.2.154/32 any log 40 permit ip 15.0.2.154/32 any log 50 permit ip 15.32.2.1/32 any log 60 permit ip 15.0.2.1/32 any log 70 permit ip 15.0.2.2/32 any log 80 permit ip 15.0.11.47/32 any log 90 permit ip 15.32.11.45/32 any log 93 permit ip 15.32.11.150/32 any log 100 deny ip any any log ! --- System QoS --- system qos service-policy type network-qos JUMBO copp profile strict ! --- SNMP --- snmp-server user admin network-admin auth sha 042F64DB5D2E0D40DF543D6A00495F1F18F9DD5FED7B priv aes-128 00540CF9793F282ED96D666B110B00753FC3F269E964 localizedV2key snmp-server host 15.0.2.188 traps version 3 priv at-sw-svc snmp-server enable traps config ccmCLIRunningConfigChanged rmon event 1 log trap public description FATAL(1) owner PMON@FATAL rmon event 2 log trap public description CRITICAL(2) owner PMON@CRITICAL rmon event 3 log trap public description ERROR(3) owner PMON@ERROR rmon event 4 log trap public description WARNING(4) owner PMON@WARNING rmon event 5 log trap public description INFORMATION(5) owner PMON@INFO ! --- NTP --- ntp server 15.0.0.9 prefer use-vrf Atom key 123 ntp server 15.32.0.9 prefer use-vrf Atom key 125 ntp source-interface Vlan502 ntp authenticate ntp authentication-key 123 md5 pz5yamz 7 ntp trusted-key 123 ntp logging ntp master 3 ! --- AAA --- aaa authentication login default group NETMAN_RADIUS local aaa authentication login console group NETMAN_RADIUS local aaa accounting default group NETMAN_RADIUS local system default switchport no ip source-route ! --- VLANs --- vlan 1-2,8,10,12,66,85,100-103,107-108,121-124,129-130,142-143,145-146,148-150,153,157-158,188,305,321,323,340,342,349,353,374,382,501-502,504-505,549,551,559,562-563,600,611,660-661,667-668,672-673,697-698,701-702,704-710,720-722,724,727,740,750-751,772,777,800-802,804,814,820-823,905,1051,1127,1129,1160-1161,1551,1559-1560,1670-1674,1720-1722,1800-1802,1814-1817,1862,1865,1870-1871 vlan 1882-1883,1885,1905,3563,3965 vlan 2 name TEST_CLUS_COMM vlan 8 name FP_Test1 vlan 10 name NESS_BOX_TRANSIT vlan 12 name FP_Test2 vlan 66 name NATIVE_VLAN vlan 85 name NESS_Temp vlan 100 name migration vlan 101 name iscsi_csv vlan 102 name iscsi_boot vlan 103 name Netapp_XFER vlan 107 name Test vlan 108 name NET_TEST_NET vlan 121 name Atom_Backup vlan 123 name storage vlan 124 name Admin_iSCSI vlan 130 name SIL_SNAPMIRROR vlan 143 name Secman_Storage vlan 146 name Foxhound_Storage vlan 150 name iscsi vlan 153 name Javelin(L4) vlan 157 name GNext_Storage vlan 158 name Ness_Storage vlan 188 name JASON_NFS vlan 321 name ATOM_Backup vlan 323 name AT-vServer vlan 340 name ucs_test vlan 342 name MadHatter_SVM_Mgmt vlan 349 name Rock_SVM3_Mgmt vlan 353 name Javlin_SVM vlan 374 name Rock_Backup_Mgmt vlan 382 name Darrin_User vlan 501 name MGMT vlan 502 name Atom_User2 vlan 504 name Commvault_Test vlan 505 name NETAPP_SNAP vlan 549 name WDS vlan 551 name L4_User vlan 559 name Victory_WS_L4 vlan 562 name Brace(L3)_User vlan 667 name Britt_Test vlan 668 name RockTesters(L4)_User vlan 672 name GTRI_User vlan 673 name VDI(L5) vlan 701 name MH_L3_DATA_HLCI vlan 702 name MH_L4_DATA_HLCI vlan 704 name Legacy-704 vlan 705 name Legacy-705 vlan 706 name Legacy-706 vlan 707 name Legacy-707 vlan 708 name Legacy-708 vlan 709 name Legacy-709 vlan 710 name Legacy-710 vlan 721 name GTRI_JAVELIN_L4-721 vlan 740 name NETMAN vlan 750 name l4_secman vlan 751 name Secman_DMP-751 vlan 777 name FTD1010_TSHOOT vlan 804 name FH_L4_HLCI vlan 814 name Rock_L4 vlan 820 name GNext_User vlan 821 name GNext_Sentris vlan 822 name GNext_VPX vlan 823 name GNext_VDA vlan 905 name Rock_(L4) vlan 1051 name IP_SEC_1010 vlan 1127 name Vic_Storage vlan 1551 name Services(L3)_User vlan 1559 name Victory(L3)_User vlan 1670 name BigTen_User vlan 1671 name Victory_DMP-1671 vlan 1672 name VIC_VDI vlan 1673 name Victory_Sentris vlan 1720 name Javelin(L3)_User vlan 1721 name GTRI_JAVELIN_L3-1721 vlan 1722 name Victory_VDI-1722 vlan 1800 name Foxhound(L3)_User vlan 1801 name FH_L3_DATA_HLCI vlan 1814 name ROCK_L3_MLS vlan 1815 name ServMan_User vlan 1870 name AT1EU-JavelinCoop(L3)_User vlan 1883 name NESS_User vlan 1885 name NESS_Client vlan 1905 name Rock(L3)_User vlan 3563 name Brace_User vlan 3965 name V3E_DEV_HOST ! --- Spanning Tree --- spanning-tree port type edge bpduguard default spanning-tree port type edge bpdufilter default spanning-tree port type network default spanning-tree vlan 1,66 priority 8192 spanning-tree vlan 2,100-102,107-108,121-123,129,142,145,148-150,153,305,323,340,353,382,501-502,505,549,551,562-563,600,611,660-661,667-668,672,697-698,701-702,704-710,720-722,724,727,750,772,800-802,804,814,905,1127,1129,1160-1161,1551,1559-1560,1670,1672-1673,1720-1721,1800-1802,1814-1817,1862,1865,1870-1871,1882,1905,3563,3965 priority 24576 spanning-tree vlan 3-65,67-99,103-106,109-120,124-128,130-141,143-144,146-147,151-152,154-304,306-322,324-339,341-352,354-381,383-500,503-504,506-548,550,552-561,564-599,601-610,612-659,662-666,669-671,673-696,699-700,703,711-719,723,725-726,728-749,751-771,773-799,803,805-813,815-904,906-1126,1128,1130-1159,1162-1550,1552-1558,1561-1669,1671,1674-1719,1722-1799,1803-1813,1818-1861,1863-1864,1866-1869,1872-1881,1884-1904,1906-3562,3564-3964,3966-3967 priority 0 spanning-tree vlan 1883 priority 4096 ! --- VRF --- vrf context Atom ip domain-name atom.dev ip name-server 15.0.2.128 15.0.2.129 15.32.2.128 ip route 0.0.0.0/0 15.0.2.254 vrf context management ! --- Port-Channel Load Balance --- port-channel load-balance src-dst ip-l4port-vlan ! --- vPC Domain --- vpc domain 1 peer-switch role priority 10 peer-keepalive destination 192.168.0.2 source 192.168.0.1 delay restore 150 peer-gateway auto-recovery ! --- SVI --- interface Vlan1 interface Vlan502 no shutdown vrf member Atom no ip redirects ip address 15.0.2.121/24 no ipv6 redirects ! --- Port-Channels --- interface port-channel3 description //Trunk 500e X1 switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 vpc 3 interface port-channel10 description //Trunk Peer - Allow STP switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type network vpc peer-link interface port-channel124 description //Trunk 9300 switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type normal spanning-tree bpduguard disable spanning-tree guard root mtu 9216 no lacp suspend-individual vpc 124 interface port-channel125 description //Trunk UCS-A switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard disable spanning-tree guard root mtu 9216 vpc 125 interface port-channel126 description //Trunk UCS-B switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard disable spanning-tree guard root mtu 9216 vpc 126 interface port-channel127 description //Trunk AFF300-A switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree guard root mtu 9216 vpc 127 interface port-channel128 description //Trunk AFF300-B switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree guard root mtu 9216 vpc 128 interface port-channel129 description //Trunk FAS 2750-A switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 storm-control broadcast level 99.00 storm-control unicast level 99.00 switchport block unicast vpc 129 interface port-channel130 description //Trunk Fas 2750-B switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 storm-control broadcast level 99.00 storm-control unicast level 99.00 switchport block unicast vpc 130 interface port-channel131 description //Trunk A70-A switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree guard root mtu 9216 vpc 131 interface port-channel132 description //Trunk A70-B switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree guard root mtu 9216 vpc 132 ! --- Breakout Ports (100G -> 4x25G) --- int e1/1 - 26 shutdown exit interface breakout module 1 port 1 map 25g-4x interface breakout module 1 port 5 map 25g-4x ! --- Physical Interfaces: Breakout (UCS/A70) --- interface Ethernet1/1/1 description //Trunk 6554-1:25 switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 125 mode active no shutdown interface Ethernet1/1/2 description //Trunk 6554-1:26 switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 125 mode active no shutdown interface Ethernet1/1/3 description //Trunk 6554-2:27 switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 126 mode active no shutdown interface Ethernet1/1/4 description //Trunk 6554-2:28 switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 126 mode active no shutdown interface Ethernet1/5/1 description //Trunk A70-A switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 131 mode active no shutdown interface Ethernet1/5/2 description //Trunk A70-A switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 131 mode active no shutdown interface Ethernet1/5/3 description //Trunk A70-B switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 132 mode active no shutdown interface Ethernet1/5/4 description //Trunk A70-B switchport mode trunk switchport access vlan 67 switchport trunk native vlan 66 switchport trunk allowed vlan 2-66,68-4094 spanning-tree port type edge trunk spanning-tree bpduguard enable spanning-tree guard root mtu 9216 channel-group 132 mode active no shutdown ! ! --- Bulk Disabled Ports --- int e1/3/1-4,e1/7/1-4,e1/11/1-4,e1/13-23 description //Disabled access switchport access vlan 67 switchport trunk native vlan 66 spanning-tree port type edge spanning-tree bpduguard enable spanning-tree guard root storm-control broadcast level 99.00 storm-control unicast level 99.00 switchport block unicast udld enable shutdown ! --- Management Interface --- interface mgmt0 vrf member management ip address 192.168.0.1/24 icam monitor scale ! --- Console & VTY --- line console exec-timeout 5 line vty session-limit 4 exec-timeout 0 access-class SWITCH_MGMT in ! --- Logging --- logging ip access-list cache entries 8001 logging logfile LOG_FILE 6 size 4096 logging server 15.0.2.146 2 logging server 15.0.2.222 6 logging level authpri 6 intersight use-vrf Atom ``` --- ## Configuration Explanation ### Platform & Global Settings Running NX-OS 10.3(7) with a Jumbo MTU QoS policy (9216 bytes) applied globally via `system qos`. IP source-route is disabled. SSH is restricted to AES256-GCM ciphers. CoPP is set to strict for control-plane protection. ### VDC Resource Limits Standard resource limits for a single-VDC 9300 — up to 4094 VLANs, 4096 VRFs, and 511 port-channels. ### Features Enabled `nxapi`, `bash-shell`, `scp-server`, `udld`, `interface-vlan`, `lacp`, `vpc`, `lldp`, `telemetry`, and CFS Ethernet distribution for vPC. ### Authentication & Access Control RADIUS authentication via two servers (15.0.11.68 and 15.32.11.68) in the `NETMAN_RADIUS` group, using the `Atom` VRF. AAA fallback is local. VTY access is restricted to the `SWITCH_MGMT` ACL (specific management host IPs only, with a deny-all default). VTY timeout is 0 (no timeout — note this differs from NEXUS-2 which uses 5 minutes). ### NTP Two NTP servers in the Atom VRF (preferred) with MD5 authentication. NTP source is Vlan502. This switch acts as NTP master stratum 3. ### SNMP SNMPv3 with SHA auth and AES-128 privacy. Traps sent to 15.0.2.188. RMON events configured for severity levels 1–5. ### VLANs Approximately 200 VLANs are defined, covering storage (iSCSI, NFS, SnapMirror), compute (UCS, HLCI workloads), management, user, and VDI segments. VLAN 66 is the native VLAN; VLAN 67 is the unused/quarantine access VLAN for disabled ports. ### Spanning Tree STP is configured with global edge/bpduguard and bpdufilter defaults for access ports, and network type for uplinks. This switch holds STP root priority 8192 for VLANs 1 and 66, making it the root for those VLANs. Most production VLANs are set to priority 24576 (secondary root). Unused VLANs are set to priority 0 (disabled from becoming root). ### VRF & Routing A single non-default VRF `Atom` carries the management/user traffic with a default route to 15.0.2.254. Vlan502 (`Atom_User2`) is the L3 gateway SVI at 15.0.2.121/24. ### vPC Domain - **Domain:** 1 - **Role Priority:** 10 (primary) - **Peer-link:** Po10 (Eth1/47–48), `spanning-tree port type network` - **Peer-keepalive:** mgmt0, destination 192.168.0.2, source 192.168.0.1 - **Options:** `peer-switch`, `peer-gateway`, `auto-recovery`, 150-second restore delay - **vPC members:** Po3 (500e-X1), Po4 (500e-X2), Po124 (9300), Po125 (UCS-A), Po126 (UCS-B), Po127 (AFF300-A), Po128 (AFF300-B), Po129 (FAS2750-A), Po130 (FAS2750-B), Po131 (A70-A), Po132 (A70-B) ### Port-Channel Load Balancing `src-dst ip-l4port-vlan` — distributes traffic based on source/destination IP, L4 port, and VLAN for optimal flow distribution. ### Physical Interfaces - **Ports 1/1–1/26:** Shut down as a group first, then individual interfaces are re-configured. Ports 1, 5, and 9 are broken out as 4x25G sub-interfaces. - **Eth1/1/1–1/1/4:** 25G breakout ports to UCS 6554 FIs → Po125/Po126 - **Eth1/5/1–1/5/4:** 25G breakout ports to A70 storage arrays → Po131/Po132 - **Eth1/24–1/25, 1/45–1/46:** 9300 uplink → Po124 (4-link LACP) - **Eth1/26:** 500e-X1 → Po3 - **Eth1/18:** 500e-X2 → Po4 - **Eth1/47–1/48:** vPC peer-link → Po10 - **Eth1/53–1/54:** AFF300-A/B → Po127/Po128 - **Eth1/2–1/3:** FAS2750 → Po129/Po130 - **Disabled ports:** Placed in VLAN 67, bpduguard enabled, storm-control, UDLD, unicast block — shutdown ### Logging Syslog to 15.0.2.146 (severity 2) and 15.0.2.222 (severity 6). Local log file `LOG_FILE` at severity 6. ACL hit caching configured for 8001 entries.