- DL manuals
- 3Com
- Switch
- IntelliJack NJ200
- Supplementary Manual
3Com IntelliJack NJ200 Supplementary Manual
Summary of IntelliJack NJ200
Page 1
Technical brief 3com ® nj200 network jack management feature: virtual lans and traffic prioritization.
Page 2
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n a vlan is a logical subnet grouping that can be assigned to users, logins, or systems— independently of the physical network infrastructure. An ieee 802.1q-compliant vlan is equivalent to a layer 2 broad...
Page 3
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n forwarding outbound-traffic to the lan for most outbound data traffic, the pan ports add vid tags to the ethernet frames prior to them reaching the lan (uplink) port. In this case, the lan port simply de...
Page 4
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n figure 1 provides a two-key schematic of the traffic-control process, including where ingress and egress rules are applied. Configuring the ingress and egress modes is accomplished using 3com central con...
Page 5
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n 5 figure 3. Ingress and egress modes can be viewed and configured using 3com central configuration manager. 3. Use the pull-down menu to set the desired lan egress mode , either: a) frames transmitted un...
Page 6
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n 3. Click on the vlan tab to open a window that displays port-based settings for vlans, outgoing tags, and incoming tags: 6 figure 4. Port associations enable you to assign a vlan broadcast domain to a si...
Page 7
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n 7 1. Put a check the outgoing tag scheme box. Note: this setting affects both vlan and traffic priority sorting on a bridge-wide basis. 2. Select the port 1 tab and from the pull-down menu, select add ta...
Page 8
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n ieee 802.1d/d17 (which incorporates ieee 802.1p) traffic prioritization lets it staff establish packet-based control over network traffic. These advanced features allow high- priority packets containing ...
Page 9
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n 9 setting priority tag values the first step in configuring a traffic prioritization scheme is to ensure that the nj200 network jack recognizes the priority tags as traffic passes through the switch. As ...
Page 10
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n configuring traffic priority levels is accomplished using 3com central configuration manager: 1. Open 3com central configuration manager and select devices from the main menu. 2. From the list of devices...
Page 11
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n 11 setting up traffic priority schedule policy use this setting to modify how the switch will receive frames from each queue: 1. Open 3com central configuration manager and select devices from the main m...
Page 12
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n it staff can use vlans to partition traffic streams into easily manageable and securable groups. Automated traffic prioritization can significantly improve network and applica- tion performance, particul...
Page 13
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n 13 global switch setting default value max frame size 1518 or 1522 if tagged counter mode count good frames priority scheduling mode 8, 4, 2, 1 weighted vlan tag for lan port (egress) egress frame unmodi...
Page 14
3 c o m ® n j 2 0 0 n e t w o r k j a c k — v l a n s & t r a f f i c p r i o r i t i z at i o n 3com corporation, corporate headquarters, 350 campus drive, marlborough, ma 01752-3064 to learn more about 3com solutions, visit www.3com.Com. 3com is publicly traded on nasdaq under the symbol coms. Cop...