The previous articles explained the core execution process of spark SQL and the SQL parser of the Catalyst Framework for Spark SQL to accept user input SQL, parsed to generate unresolved Logical plan. We remember another core component analyzer in the execution process of Spark SQL, and this article will describe what the analyzer does in spark SQL.Analyzer is located under the Catalyst's analysis package, and the main responsibility is to resolved ou
expires is a Web server response message header field that, in response to an HTTP request, tells the browser that the browser can cache data directly from the browser before the expiration time, without having to request it again.
Cache-control
1. Enter the global configuration mode.
Select Switch-3548> enablePassword :********Change-3548 # config tChange-3548 (config )#
2. Enable the HTTP Server of the vswitch
Switch-3548 (config) # ip http server
3. Configure the Host Name
Switch-
The Catalyst3550 switch with EMI supports three routes or bridged three-tier interfaces:
Svis: You should configure Svis for any VLAN you want to route traffic to. When you enter a VLAN ID after the interface VLAN Global Configuration command, the
This article discusses the issue of the second IP communication between the core switch and the converged switch interface.
When the core switch is configured with a second IP, the converged switch is connected to the core switch via trunk, and the
In2013Year1Month17,AMDReleasedAMDCatalyst13.1And then announced the deletion of the auto-update feature.AMDThe reason is that there is a security problem in the automatic update. Recently, details about the security problem are reported on the
I. CAT4006 engine module WS-X4013 configuration listThese include: Basic settings, VLAN configuration, Channel configuration, and port Image Port 1/2 to connect to gigabit IDS)
Cisco Systems, Inc. Console
Enter password:CAT4006> enable
Enter
It was started and entered the Rommon mode because the system could not locate the boot file and could not configure Confreg 0x2102/confreg 0x2142
You can do this only through the following steps
Rommon 1 >confreg
Configuration Summary:
=> load
Original article, please be sure to place the following paragraph at the beginning of the article.This article forwards from the technical World , the original link http://www.jasongj.com/spark/rbo/
The contents of this article are based
1, into the global configuration mode
Switch-3548 > Enable
Password: ********
Switch-3548 # config T
Switch-3548 (config) #
2, enable the switch HTTP Server
Switch-3548 (config) # IP HTTP Server
3, configure the host name
Switch-3548 (config)
introduce each of them.Cisco 4500 series switches, on Cisco's product line, are actually named Cisco Catalyst 45XX. The following XX represents the number of module slots in the Cisco 45 series. For example, the Cisco Catalyst 4503 Switch, which represents the Cisco 45 series switch with 3 card slots. The Cisco Catalyst 4506
As a network manager, it is the most common task to configure commands on routers and switches. The purpose is to execute commands and adjust parameters, allows routers and switches to run as required by network administrators. This is almost the operation performed by the network administrator every day. Which of the following methods can be used to manage network devices? Which one is simpler and which one is more efficient? This is mainly based on the actual use of the network administrator.
The naming rules for Cisco switches are more complex than the naming rules for routing,Look at these:ws-c2960-24tc-l, WS-C2950G-24-EI-DC, Ws-c2960-24tt-l, Ws-c3750g-24ts-e, Ws-c3750g-24t-s, We didn't find them on the switch, we just saw the Catalyst 2950 series and wrote it all: The Cisco Catalyst 2950 Series, which means the Cisco switch 2950 series, Catalyst Th
Note: The device iOS and configuration files need to be backed up before upgrading.4506a#show versionCisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-ipbase-m), Version 12.2 (a) SG3, RELEASECisco WS-C4506 (MPC8245) Processor (revision 4) with 524288K bytes of memory.Processor Board ID Fox081302z5MPC8245 CPU at 400Mhz, Supervisor VLast Reset from PowerUp1 Virtual Ethernet InterfaceGigabit Ethernet Interfaces511K bytes of non-volatile confi
Cisco switch iOS upgrade, actually quite simple, but need to note is, can not let the switch flash storage is empty, must have an iOS in, or no iOS in Flash, waiting to upload iOS with Xmodem, so your time can be a lot of waste ah. Because the Rommon mode is not available for the Cisco Catalyst 2950, 2960, 3550 Switch lost iOS or iOS failure, because there is no, only the Cisco Catalyst 4006,
packet switching. If a vswitch can provide a maximum of 176 Gigabit ports and the declared throughput is less than 261.8 Mpps (176x1.488 Mpps = 261.8 ), the user has reason to think that the switch adopts a blocking structure design. Generally, the switches that both meet the requirements are qualified switches.
For example:
2950G-48
Backplane = 2x1000x2 + 48x100x2 (Mbps) = 13.6 (Gbps)
Equivalent to 13.6/2 = 6.8 Gigabit Ports
Throughput = 6.8 × 1.488 = 10.1184 Mpps
The IT Certification Examination Resources Network has collected a number of training materials for Cisco agents, including answers to pre-sales questions concerning routers, switches, IP/TV, firewalls, VPNs, network management, HFCs, VOIP, and equipment procurement., it can also be used as an entry-level document.12. Question: Which switches Does Cisco currently support layer-3 switching?Answer: Catalyst 2948G-L3,
supports hot swapping of network modules, while Cisco3620/3640 does not support hot swapping of network modules.
* The Cisco3660 redundant power supply is built in, while the Cisco3620/3640 redundant power supply is external.
24. Why 3640 cannot identify NM-1FE2W?
Upgrade IOS to 12.0.7T
Vswitch Problems
About vswitches:
1. How is the stacking of Catalyst 35500XL/2950XL implemented?
A. dedicated stacked cables, 1 m long or 50 cm long (CAB-GS
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