Interaction with other features
This feature affects management access to the switch as follows:
IP—SNMP, Telnet, SSH, HTTP, TFTP, SCP, SFTP
Routing—RIP, OSPF, PIM, VRRP
When the
disable layer3
command is configured on a VLAN, the behavior is as if no IP address were configured for that VLAN. There is no other change in behavior.
Syntax:
disable layer3 vlan [vid vid range]
no disable layer3 vlan [vid vid range]
In the configuration context, turns off Layer 3 routing for the specified VLAN or VLANs. When executed in vlan context, turns off Layer 3 routing for that VLAN.
The
no
form turns on Layer 3 routing for the specified VLAN or VLANs.
If QinQ is enabled,
svlan
can be configured as well.
The
show ip
command displays
disabled
in the display column if Layer 3 has been disabled, or if the VLAN has no IP configuration. You can tell which is the case by viewing the remaining columns; if there is no IP configuration, the remaining columns are blank.
Viewing a VLAN disabled for Layer 3
switch(config)# show ip Internet (IP) Service IP Routing : Disabled Default Gateway : 172.22.16.1 Default TTL : 64 Arp Age : 20 Domain Suffix : DNS server : VLAN | IP Config IP Address Subnet Mask Proxy ARP -------------------- + ---------- --------------- --------------- --------- DEFAULT_VLAN | DHCP/Bootp 172.22.18.100 255.255.248.0 No No VLAN3 | Disabled 172.17.17.17 255.255.255.0 No No VLAN6 | Disabled VLAN7 | Manual 10.7.7.1 255.255.255.0 No No
For IPv6, the
Layer 3 Status
field displays the status of Layer 3 on that VLAN.
Viewing IPv6 Layer 3 status for a VLAN
switch(config)# show ipv6 Internet (IPv6) Service IPv6 Routing : Disabled Default Gateway : ND DAD : Enabled DAD Attempts : 3 Vlan Name : DEFAULT_VLAN IPv6 Status : Disabled Layer 3 Status : Enabled Vlan Name : layer3_off_vlan IPv6 Status : Disabled Layer 3 Status : Disabled Address | Address Origin | IPv6 Address/Prefix Length Status ---------- + ------------------------------------------- ----------- manual | abcd::1234/32 tentative autoconfig | fe80::218:71ff:febd:ee00/64 tentative