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1、2005 Nortel Networks Limited. All Rights Reserved T Te ec ch hn ni ic ca al l T Ti ip p TT-0506401a - Informational - 22-Jun-2005 Proxy IP for the Nortel Application Switch OS version 22.x and later Contents Associated Products:.1 Previous Proxy IP Functionality.1 Current Proxy IP Functionality.2 Li
2、mitation of Proxy IP.2 Configuring Proxy IP using the CLI (Command Line Interface) .2 Port and VLAN based Proxy IP addresses .2 Filter Based Proxy IP Addresses.6 Enabling Proxy IP on a Port .8 Egress PIP for a Virtual Service.9 Configuring Proxy IP using the BBI (Browser-Based Interface).10 Understa
3、nding Proxy IP in the /cfg/dump Output .19 Sample Configuration Containing Proxy IP .20 Introduction: The purpose of this document is to detail the updated functionality of proxy IP addressing on the Nortel Application Switch. Beginning with the Nortel Application Switch operating system version 22.
4、0, proxy IP functionality has been altered to better suit the needs of the network administrator. Associated Products: The information in this document is intended to be used with the following product(s) with the indicated software or hardware revisions: Revision Information Product Name or Order N
5、umber Potentially Affected Corrected Nortel Application switches: 2208, 2216, 2224, 2424, 3408 22.x and above N/A Previous Proxy IP Functionality In the Nortel Web Switch and in the Nortel Application Switches running software prior to release 22.0, proxy IP addresses were assigned to SPs (Switch Pr
6、ocessors) instead of physical ports or VLANs. Because proxy processing occurred after VMA (virtual matrix architecture) processing, there was no way to determine which SP a packet would be VMAd to, and hence which proxy IP would be used. Proxy IP addresses had to be assigned to every SP due to this
7、functionality. The only way to avoid assigning a proxy IP address to every SP was to disable VMA, which is not recommended as doing so will decrease the performance of the switch. Packets would use the proxy IP address of whichever port it was VMAd to, which could be that of the ingress port, the eg
8、ress port, or neither. There was no way to accurately predict which proxy IP address would be used. A further limitation to this proxy service was that the number of proxy IP addresses was limited to the number of SPs on the switch. The AD3/AD4/180e/184 Web Switches have eight SPs, while the Applica
9、tion Switches (2000 and 3000 series) have only four SPs. TT-0506401a Proxy IP for the Nortel Application Switch OS version 22.x and later 2005 Nortel Networks Limited. All Rights Reserved Page: 2 of 22 Current Proxy IP Functionality Beginning with the Nortel Application Switch operating system versi
10、on 22.0, proxy IP processing is not affected by VMA. Proxy IP addresses are assigned to either physical ports or VLANs instead of SPs. If proxy is set to a type of port, then each proxy IP address is associated with a specific port. If proxy is set to a type of vlan, then each proxy IP address is as
11、sociated with a specific VLAN. Also new is the fact that the proxy feature can be configured to use either the packets ingress port or VLAN proxy IP address or the proxy IP address of the egress port or VLAN. A maximum of 32 proxy IP addresses can be configured on the switch. This means that you can configure up to 32 port-based proxy IP addresses, 32 VLAN-based proxy IP addresses, or a combination of both types totaling 32 proxy IP addresses. Limitation of Proxy IP Although the use
