Mapping 802.1Q Vlans To Isl Vlans - Cisco WS-C4003 - Catalyst 4000 Chassis Switch Software Configuration Manual

Chapter 10 Configuring VLANs
This example shows how to assign switch ports to a VLAN and verify the assignment:
Console> (enable) set vlan 500 2/4
VLAN 500 modified.
VLAN 560 modified.
VLAN
---- -----------------------
500
Console> (enable) show vlan 500
VLAN Name
---- -------------------------------- --------- ------- ------------------------
500
VLAN Type
---- ----- ---------- ----- ------ ------ ------ ---- -------- ------ ------
500
VLAN AREHops STEHops Backup CRF
---- ------- ------- ----------
Console> (enable) show port 2/4
Port
----- ------------------ ---------- ---------- ------ ------ ----- ------------
2/4
Port
----- -------- ----------------- ----------------- -------- -------- -------
2/4
Port
----- ---------- --------- ----------- ------------------------- ----------
2/4
Port
----- ---------- ---------- ---------- ---------- ---------
2/4
Port
----- ---------- ---------- ---------- ---------- --------- --------- ---------
2/4
Last-Time-Cleared
--------------------------
Wed Jul 26 2000, 19:44:05
Console> (enable)

Mapping 802.1Q VLANs to ISL VLANs

The valid range of user-configurable ISL VLANs is 1–1000. The valid range of VLANs specified in the
IEEE 802.1Q standard is 0–4095. In a network environment with non-Cisco devices connected to Cisco
switches through 802.1Q trunks, you must map 802.1Q VLAN numbers greater than 1000 to ISL VLAN
numbers.
802.1Q VLANs in the range 1–1000 are automatically mapped to the corresponding ISL VLAN. 802.1Q
VLAN numbers greater than 1000 must be mapped to an ISL VLAN in order to be recognized and
forwarded by Cisco switches.
78-12647-02
Mod/Ports
2/4
Engineering
SAID MTU
enet 100500 1500
Name Status
notconnect 500
Security Secure-Src-Addr
disabled
Status Channel Channel
mode
notconnect auto not channel
Align-Err FCS-Err
- 0
Single-Col Multi-Coll Late-Coll
0 0
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
Status IfIndex Mod/Ports, Vlans
active 59
Parent RingNo BrdgNo Stp
- - - -
Vlan Level
normal
Last-Src-Addr
Neighbor
status device
Xmit-Err Rcv-Err UnderSize
0 0
Excess-Col Carri-Sen Runts
0 0
2/4
BrdgMode Trans1 Trans2
- 0 0
Duplex Speed Type
auto auto 10/100BaseTX
Shutdown Trap IfIndex
No disabled 12
Neighbor
port
0
Giants
0 0
Configuring VLANs
0
10-5