Thư viện tài liệu, ebook tổng hợp lớn nhất Việt Nam

There are three types of NAT: static, dynamic, andoverloading (PAT). Static NAT is one-to-one address mapping. Dynamic NAT addresses are picked from a pool. NAT overloading (PAT) allows you to map many inside addresses to one outside address. Use the show ip nat translation command to display the translation table and verify that translation...

26 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1180 | Lượt tải: 0

Follow these steps to determine the subnetwork and host addresses using a subnet mask: Write the octet being split in binary. Write the mask in binary and draw a line to delineate the significant bits. Cross out the mask so you can view the significant bits. Copy the subnet bits four times. Define the network address by placing all zeroes in t...

22 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1136 | Lượt tải: 0

Standard IPv4 ACLs allow you to filter based on source IP address. Extended ACLs allow you to filter based on source IP address, destination IP address, protocol, and port number. Named ACLs allow you to delete individual statements froman ACL. You can use the show access-lists and show ip interface commands to troubleshoot common ACL configura...

26 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1357 | Lượt tải: 0

Chúng ta thiết lập cấu hình địa chỉ IP và TSAPs cho Module Ethernet S7-200 CP243-1 với STEP 7-Micro/WIN. Project S7-200 cất giữ địa chỉ IP và TSAPs mà Module Ethernet S7-200 CP243-1 sẽ được dùng khi đã cố định đến mạng. sau khi chúng ta lựa chọn những thông số cho Module Ethernet S7-200 CP243-1. Chúng ta phải download S7-200 project trước những...

45 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1961 | Lượt tải: 1

ACLs can be used for IP packet filtering or to identify traffic to assign it special handling. ACLs perform top-down processing and can be configured for incoming or outgoing traffic. You can create an ACL using a named or numbered ACL. Named or numbered ACLs can be configured as standard or extended ACLs, which determines what they can filter. ...

18 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1087 | Lượt tải: 0

EIGRP supports MD5 authentication. The router identifies itself for every EIGRP packet it sends. The router authenticates the source of each routing update packet that it receives. Each participating neighbor must have the same key configured.

33 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1273 | Lượt tải: 0

Speed and throughput: 10 to 1000 Mb/s Average cost per node: Least expensive Media and connector size: Small Maximum cable length: Varies

18 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1231 | Lượt tải: 0

Bước 1: Cho phép ISIS bằng lệnh router isis Bước 2: Cấu hình NET, gán area bằng lệnh net networkaddress Bước 3: Cho phép ISIS trên tất cả các interfaces bằng lệnh ip router isis. Kiểm tra bằng các lệnh: • show clns neighbor • show clns interface E0 • show isis database • show isis database detail LSPID

18 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1993 | Lượt tải: 0

The routing algorithm of OSPF maintains a complex database of topology information, which routers use to maintain full knowledge of distant routers. OSPF is a classless, link-state routing protocol that is widely deployed in many networks. OSPF load-balances across four equal metric paths by default on Cisco routers. OSPF supports plaintext an...

27 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1208 | Lượt tải: 0

High port density Large frame buffers Mixture of port speeds Fast internal switching Switching modes: Cut-through Store-and-forward Fragment-free

22 trang | Chia sẻ: nguyenlam99 | Ngày: 09/01/2019 | Lượt xem: 1182 | Lượt tải: 0