You need to switch internal routing use serial console to to activte system mode layer 3. When changing system mode the switch will get a factory setting. Here how I did it as well as changing default vlan id to avoid complications from vlan APs I also turn on ssh and generate certificate that need to be done in serial console see below for version 18.104.22.168 serial console Add one IP address per vlan Turn on arp proxy Arp proxy means that the switch will answer arp request for known IP - MAC addressess Layer 3 mode will handle switch local routing. If you need to use 1000 Mbit jumbo frames in combination with 100Mbit they can't share vlan=collosion domain. you need assign separate vlan and let the switch handle routning and packet defragmentation. What i did to get SG300-20 SW Version: 22.214.171.124 (Date: 28-Apr-2010, Time: 13:33:55) Boot Version: 126.96.36.199 (Date: 08-Apr-2010, Time: 16:37:57) HW Version: V30 Howto configure a New Switch with Layer 3 and default vlan id of 63 Using Serial Login menu 1,9 reboot to factory defaults Login Menu 4 system mode layer3 Reboot Login Set new password Menu 5,1 Vlan ID 63 Backup running to startup Menu 1,10 reboot system PING sw2 (192.168.127.14) 56(84) bytes of data. From qice (192.168.127.17) icmp_seq=2 Destination Host Unreachable qic:> ip addr add 192.168.1.253/30 dev eth1 [root@qic ~]# ping 192.168.1.254 PING 192.168.1.254 (192.168.1.254) 56(84) bytes of data. From 192.168.1.253 icmp_seq=2 Destination Host Unreachable No default IP address in Layer3 and no DHCP No IP -> no Web On Serial Menu 1, 6, 1 ,1 IPv4 Address-add IPv4 Address: 192.168.127.14 Subnet Mask: 255.255.255.0 DHCP Client: ENABLE Interface Type: VLAN Interface Number: 63 Menu 1, 6, 4 HTTPS Configuration HTTPS Server: ENABLE HTTPS Server Port: 443 HTTPS Certificate: IS ACTIVE Menu 1, 6, 3 HTTP Configuration HTTP Server: DISABLE Can't change default route when address is DHCP Menu 1, 6, 6. IPv4 Default Route Next Hop IP Address: 192.168.127.127 No such instance ? Traffic verfied Ping (IPv4) IPv4 address/Host Name: 192.168.127.127 Statistics: 4 packets transmitted, 4 packets received, 0 percent round-trip (ms) min/avg/max = 0/5/20 Configs for SNMP and secure connections Menu 1, 2. General System Information System Contact: email@example.com Host Name: sw2 System Location: xxxxxxx Menu 1, 2, 3, 1. SSH Server Configuration SSH Server: ENABLE Menu 1, 2, 3, 3. SSH Crypto Key Generation Menu 1, 2, 3, 4. SSH Keys Fingerprints RSA Fingerprints 11:09:6e:6c:26:f4:e5:b3:e4:34:fe:5c:3e:df:f2:33 DSA Fingerprints 72:4d:05:ed:44:5d:f2:8a:fe:80:bc:d7:71:80:67:d1 Menu 1, 2, 3, 4. SNMP Configuration SNMP: ENABLE Menu 1, 3. Username & Password Settings Add users Menu 1, 4, 1. SSL Certificate Generation Public Key Length 1024 ..... Menu 1, 4, 2. SSL - Show Certificate Issued by : C=SE ST=Stockholm ..... Menu 1, 7, 1. Upgrade / Backup (IPv4) Source File: running-config Destination File: startup-config Reboot system web https://sw2.x.z SNTP Add VLAN x y Use serial to add vlan IP address and default route Use web for rest.
... View more
Hi I noticed problem with connection of a computer. Same connection had worked without a problem before. DHCP failed due to no connection resulting in windows7 assigning a IP address, no network When inserting RJ45 the Green link led turned on for a brief moment. Only got a 100Mbit FD connection after some jugglinng with rj45 in both ends. In case of oxid building over nigth The cable is more than 10 meters. A fluke network tester had problem connecting to ports with a 1 m cable. This usually means autoneg problem or low voltage. When I turned off green ethernet/short reach for the switch(sg300-20) and I got a 1000Mbit FD without a problem. I have previously noted that the voltage on the transmitter from the switch is on the low side using a Fluke network tester. I got around 0.5 V and I prefer much higher. I guess turning green features on and trying to use a longer cable is to stretch the luck a tad to much. /Per
... View more