HP StorageWorks 1606 Brocade Fabric OS Command Reference v6.3.0 (53-1001337-01 - Page 622

2 portCfg fastwrite Configures the FC port for FC Fastwrite. Enables or disables FC Fastwrite between two Brocade 7500 routersor two Brocade chassis with FR4-18i blades connected by Fibre Channel ISLs. FastWrite mitigateslatency effects on SCSI writes, and improves throughputover a high-latency link. The blade first should be enabled for FC Fastwrite using fastWriteCfg. You can also use this command to list all ports configured for FC Fastwrite. The syntax for portcfg fastwrite is as follows: portcfg fastwrite [slot/]port mode Valid modes for fastwrite are: --enable Enables FC Fastwrite on the specified port. --disable Disables FC Fastwrite on the specified port. vlantag Use this command to maintain the VLAN tag table associated with a particular network interface. This table is mainly used by ingress processing to filter VLAN tagged frames. If a VLAN tagged frame is received from the network and there is no entry for the VLAN ID, the frame is discarded. There is no ingress filtering on the destination IP address. There can be multiple VLAN IDs per IP interface; however, there cannot be two entries to the same destination, including 0.0.0.0. On egress, this table is used to determine whether to tag a frame that is not already marked as tagged. Egress frames already marked as VLAN tagged (i.e. FCIP) take precedence over entries in this table. NOTE: This command supports --add and --delete options only. To modify a table entry it must first be deleted, then added with different configuration parameters.The syntax for portcfg vlantag is as follows: portcfg vlantag [slot/]port mode arguments Valid modes for vlantag are: add ipif_addr vlan_id L2 CoS [dst_ipaddr] Adds an entry to the VLAN tag table. delete ipif_addr vlan_id [dst_ipaddr] Deletes an entry from the VLAN tag table. Valid arguments for mode are: ipif_add Specifies the locally defined interface address in IPv6 or IPv4 format. vlan_id Specifies the VLAN ID used for this tag. Range is 1-4094. L2 CoS Specifies L2 Class of Service/Priority, as defined in the IEEE 802.1p specification. The range is 0-7. dst_ipaddr Specified an optional destination IP address (IPv4 or IPv6). All packets destined for this IP address are tagged accordingly. If a destination IP Address is not specified, all packets not already tagged will be tagged. The default is 0.0.0.0. 592 Fabric OS Command Reference 53-1001337-01