エクストリーム・ネットワークス(XOS)をご利用している場合、デフォルトですべてPort がDefault Vlan 1 にアサインします。つまり、Vlan 1 にアサインされた Active Port は Security hole になる可能性があります。 Best Practice のため、すべてのPort は Default vlan から削除することができます。
### 例 ####
* X480-48t.1.17.36 #
* X480-48t.1.17.36 # show vlan default
VLAN Interface with name Default created by user
Admin State: Enabled Tagging: 802.1Q Tag 1
Description: None
Virtual router: VR-Default
IPv4 Forwarding: Disabled
IPv4 MC Forwarding: Disabled
Primary IP: 172.16.1.103/24
IPv6 Forwarding: Disabled
IPv6 MC Forwarding: Disabled
IPv6: None
STPD: s0(Disabled,Auto-bind)
Protocol: Match all unfiltered protocols
Loopback: Disabled
NetLogin: Disabled
OpenFlow: Disabled
TRILL: Disabled
QosProfile: None configured
Egress Rate Limit Designated Port: None configured
Flood Rate Limit QosProfile: None configured
Ports: 48. (Number of active ports=0)
Untag: !1, !2, !3, !4, !5, !6, !7,
!8, !9, !10, !11, !12, !13, !14,
!15, !16, !17, !18, !19, !20, !21,
!22, !23, !24, !25, !26, !27, !28,
!29, !30, !31, !32, !33, !34, !35,
!36, !37, !38, !39, !40, !41, !42,
!43, !44, !45, !46, !47, !48
Flags: (*) Active, (!) Disabled, (g) Load Sharing port
(b) Port blocked on the vlan, (m) Mac-Based port
(a) Egress traffic allowed for NetLogin
(u) Egress traffic unallowed for NetLogin
(t) Translate VLAN tag for Private-VLAN
(s) Private-VLAN System Port, (L) Loopback port
(x) VMAN Tag Translated port
(G) Multi-switch LAG Group port
(H) Dynamically added by MVRP
(D) TRILL Designated, (A) TRILL Appointed Forwarder
(I) Dynamically added by IDM
(U) Dynamically added uplink port
(V) Dynamically added by VM Tracking
* X480-48t.1.17.37 # config vlan "Default" delete ports all
* X480-48t.1.17.38 # show vlan "Default"
VLAN Interface with name Default created by user
Admin State: Enabled Tagging: 802.1Q Tag 1
Description: None
Virtual router: VR-Default
IPv4 Forwarding: Disabled
IPv4 MC Forwarding: Disabled
Primary IP: 172.16.1.103/24
IPv6 Forwarding: Disabled
IPv6 MC Forwarding: Disabled
IPv6: None
STPD: s0(Disabled,Auto-bind)
Protocol: Match all unfiltered protocols
Loopback: Disabled
NetLogin: Disabled
OpenFlow: Disabled
TRILL: Disabled
QosProfile: None configured
Egress Rate Limit Designated Port: None configured
Flood Rate Limit QosProfile: None configured
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