Cisco Catalyst 3550 - Page 394

2-368
Catalyst 3550 Multilayer Switch Command Reference
OL-8566-01
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
show forward
If ACLs are present, all keywords in the command could be important to the forwarding decision.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output
do not appear, but the lines that contain Output appear.
Examples Following are three examples of outputs from the show forward command. Table 2-19 describes the
major sections in the output display.
In this example, the destination MAC address is the router’s MAC address and routing lookups are
performed:
Switch# show forward fastethernet0/1 vlan 8 0000.1111.2222 0022.3355.8800 ip 8.8.8.10
4.4.4.33 255
signature:00000007, comparison ind:10, control info:2000941A control map:00000000
vlan:8, vlanid entry:000C0012 00000000 00000000 04400000
adjptr:D adjacency:E0002409 00000404 04210000
vlan:1033, vlanid entry:0004000A 00000000 00000000 00000000
vlan:1033, vlanid entry:0004000A 00000000 00000000 00000000
lookup key bk adata rawoff secoff sec
qos 960808080A04040421 800000000000FF0000 0 00000000 006304 004064 4
acl 960808080A04040421 800000000000FF0000 1 00000082 045408 002016 1
route 420808080A04040421 000000000000000000 0 3FFF800D 006361 000025 3
learn 187008000011112222 901208000004040421 0 80010003 002176 002176 0
forw 187008000011112222 901208000004040421 1 40020000 043328 010560 5
outacli A60808080A04040421 800000000000FF0000 0 00000083 012448 002016 2
bridgeDestMap: 00000000 00000000 0000FFFF FFFFFFC7
vlanMask: 00000000 00000000 0000FFFF EFFFFFFF
sourceMask: 00000000 00000000 00000000 00000000
globalMap: 00000000 00000000 00000000 00000000
globalMask: 00000000 00000000 0002FFFF EFFFFC03
forwMap: 00000000 00000000 00000000 10000000
frame notifies:
src u_dat vlan fl q-map
2 00 8 01 00000000 00000000 00000000 10000000
Egress q 44
signature:00000007, comparison ind:10, control info:2000941A control map:00000000
vlan:8, vlanid entry:000C0012 00000000 00000000 00000000
adjptr:D adjacency:E0002409 00000404 04210000
vlan:1033, vlanid entry:0004000A 00000000 88000000 00000000
lookup key bk adata rawoff secoff sec
route 420808080A04040421 000000000000000000 0 3FFF800D 006361 000025 3
GigabitEthernet0/1 vlan 1033, dst 0000.0404.0421 src 0022.3355.8800, cos 0x0, dscp 0x0
In this example, the destination MAC address is not the router’s MAC address. No routing lookups are
performed:
Switch# show forward fastethernet0/1 vlan 8 0000.1111.2222 0022.3355.9800 ip 8.8.8.10
4.4.4.33 255
signature:00000007, comparison ind:10, control info:2000941A control map:00000000
vlan:8, vlanid entry:000C0012 00000000 00000000 04620000
vlan:8, vlanid entry:000C0012 00000000 00000000 04620000
lookup key bk adata rawoff secoff sec
qos 940808080A04040421 800000000000FF0000 0 00000000 006304 004064 4
acl 940808080A04040421 800000000000FF0000 1 00000082 045408 002016 1
learn 187008000011112222 801008002233559800 0 80010003 002176 002176 0
forw 187008000011112222 801008002233559800 1 40020000 043328 010560 5