I am taking an introduction class to CCNA and we are focusing on the Application Layer,and I'm having some difficulty in understanding what is an Application Layer Service. Is the Application Layer Service the same as Application Layer Software?
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For the Cisco Nexus 5548P chassis, must the N55-D160L3-V2 (Nexus 5548 Layer 3 Daughter Card, Version 2) be installed for Layer 3 performance.
View 3 Replies View RelatedWe use a phone system that requires SIP Application Layer Gateway to be disabled on the router. We replaced the older RVO42 routers with the WRVS4400N routers and the VOIP phone works fine with this check mark option disabled.
Does the new RVO42 router allow you to disable this option? I did not find it in the manual so far. I do not want to buy two routers and find that it will not work with the phone system. We need Dual WAN this time so I thought we would try RVO42 model again as long as it is the latest version. Any issues with newer RV042, RVO82 with NEC VOIP phone systems?
Is it possible on the CSS11503 to create a layer 5 content rule that matches a url "/*/_edit".
View 3 Replies View RelatedI want to setup VLAN with the switches SG300 and SLM2024. What is the suggestion to connect these 2 switches. We have the Juniper net screen.
View 1 Replies View RelatedI have a question if I Stack a Catalyst 3750 L3 with a Catalyst just L2, will we able to use all L3 capabilities?
Switches are
WS-C3750G-24TS-E1U
WS-C3750V2-24PS-S
I have the following scenario: Pair of Cisco 887VA routers acting as Layer 3 for Voice/Data VLANs with a pair of 2960 LAN Base switches acting as Cores and possibly then 2960 LAN Lites hanging off them as access switches. Our Service Provider has provided an example config where the class-maps match based on dscp values for the QOS policy applied to the DSL circuits. We can obviously trust the attached phones but I want to be able to mark data traffic on my core switches based on destination IP/port to allow application definition. My major question is can I have a service policy on my Layer 2 uplinks to the routers where the linked classes setting dscp vlaues are based on class-maps matching on the contents of IP access lists based while at the same time not remarking the EF marked packets from the phones?
View 7 Replies View RelatedWe have a situation where services are stopped on the real servers. The probes fail and we confirm the services are not running on the server. We cannot access the ports from the ACE directly. We can still however acces the VIP on the TCP port (L4 VIP class-map). So we can still telnet to the VIP on the port from thr Client side of the network.This is on ACE 20 Modules deployed in Routed mode. The version of software is A2(3.3).
Tried removing multi-match and loadbalance policies as well as class-map and re-applying then re-appyling the service policy to interface. Same behavior,This is a problem at another level as some services are being monitored by GSS via TCP keep-Alive and this obviuosly causes a problem as the service then never goes off-line.
i have two CSS-11503 in redundant mode running 8.20 code. We had an incident in our network where a layer 2 loop caused some high traffic through the CSS' and had to shutdown some network gear(including the CSS) to clear the problem. When the CSS' were powered back up, the SSL service was suspended, why this would occur? There rest of the config appeared normal. I am the only person on these boxes, the configs were written, and I have never had a reason to suspend the ssl service.
View 1 Replies View Relatedsome misconfiguration (?) may be the reason for an undesired behaviour we are experiencing with our Cisco CSS 11501s. Balancing mechanisms work fine, however if a service transitions to the "down" state, the corresponding flows remain "alive" leading to a temporary outage of our service. Subsequent client requests are still being sent to the "down" frontend which is unresponsive.
View 4 Replies View RelatedI have an ACE4710 with a few basic farms running and it works great however I now need to implement an SSL proxy service for the first time. The requirement is that clients who are already using FQDN's need to be sent to diffent real server IP addresses as each client will have their own VM. All the clients will use the same global IP address with different A records.
View 1 Replies View Relatedi need to be able to find out what application/service is sending out net bios broadcasts on a network segment the requests are for machines that no longer are on the network but something is trying to obtain there ip address as they are not in dns any more i am assuming this is why they are resorting to netbios broadcasts i need to some how isolate what application or service is trying to find out.
View 7 Replies View RelatedI have an ACE10-6500-K9 (Application Control Engine service module for Catalyst 6500) but I can't access it because I lost the admin password.I would like to know how to perform a Password Recovery Procedure on this device.Is it similar to the password recovery procedure on an ACE 4700 appliance?
View 2 Replies View RelatedDoes ACE service module support SHA2(256) certificates? I see that private key generation defaults to SHA1 and does not provide any option, also the cipher suites in SSL parameters map do not show SHA2 options. Can it handle SHA2 in any software release? I am currently running A2(2.3) build 3.00
View 6 Replies View RelatedMy ACE module ACE30-MOD-K9 crashed today, and at the show ver output i see "last boot reason: Service "cfgmgr" ".the curent version we running is Version A5(1.2) [build 3.0(0)A5(1.2).
After doing some research i found known bug that supposed to be fixed in this version: CSCtu36146
CSCtu36146—The ACE becomes unresponsive due to a configuration manager (Cfgmgr) process failure with the last boot reason: Service "cfgmgr."
if a Cisco router or switch can handle wccp redirection enabled for both waas and some other web content filtering appliance using a different service group?
seems like the priority value would come into play determining which service group gets handled first?
we currently do WCCP for WaaS on our 3945s.
I am going to advocate to my customer that we separate this out for CPU load issues, config complexity issues, IOS issues, etc... but the question is going to come up - "can we do WCCP for different applications on our Catalyst 3750 core switch, or our 3945 WAN routers?"
Everytime I make a config change to one of the contexts on our ACE20, I get this message: Config Application in Progress. This command is queued to the system
If I run show download info, I get:
context : context1
Interface Download-status
--------------------------------------------------------------
187 In Progress
199 Pending
Regex download optimization status : Couldn't get status[TNRPC Timed out]
It eventually seems to complete, but it takes a very, very long time. We are running Version A2(3.5) [build 3.0(0)A2(3.5)].
Report run via Individual Web server URL’sThe report takes less than 20 minutes (average 15 minutes) to fetch and return the data. This is observed 9 out of 10 times.Report run via ACE Load Balanced URLThe report keeps on running for more than 20 minutes and never completes. The front end keeps showing report is running.The data in general when tested directly by running queries against the database (bypassing the platform) completes in 15-18 minutesThe network connectivity for each and every ports involved (Loadbalancer/Servers) have been throulgly checked.
View 6 Replies View RelatedSM-ES3-16-P works as a layer 3 module which means that the uplink which connects to router ( Internally ) is a layer 3 interface . Is there a way we can use it as a layer 2 switch and connect the uplink as a trunk port ?
View 1 Replies View RelatedHere is a second paragraph from official BCMSN book page 93:
View 6 Replies View RelatedI have :
- two different subnets (S1, S2)
- these subnets are connected to an IP backbone via wirelles acces points
I would like to physically connect these subnets together so the networks devices in S1 could directly communicate with the devices in S2 and vice versa without going through the backbone.
The obvious solution seems to interconnect these subnets with a router or a switch L3. But I would like to connect these subnets and stay at layer 2.
So, is it possible to connect S1 and S2 with a switch L2 ? If I do that, what is going to happen? Can I create just one subnet S3 from this two subnets when I connect them together and have my two separate subnets back as soon as I disconnect them?
I need a ≥ 8 port layer 3 managed switch. What would be the cheapest solution for this?I've been looking at some stuff like Cisco 4908G, but that only supports 1000base-X. I need something that supports the standard 1000base-T. I've also looked at a Cisco WS-C3508G-XL-EN, but correct me if I'm wrong, this is only layer 2?
View 11 Replies View Relatedi am trying to do EoMPLS using microwave as my Layer 1. i am doing the same thing using Fiber as my layer 1 and it is working. the minute i use microwave its not working. the EVC will be showing as up, but no traffic will be moving. i am using 2 3750Metro series swicthes. i have tries to tweek the MTU to be above 1500 and below 1500 but nothing is working. LDP is establishing, OSPF is working, but the EVC is just not forwadign traffic from end to end.
View 4 Replies View RelatedI have a question about QoS and how, or if, it functions between a layer 2 switch and a router. My question is, can a frame's COS sent from a layer 2 switch to a router be recognized and converted (mapped) to a DSCP setting without the use of a vlan (not the native vlan1), and can the reverse be done from a router to a layer 2 switch? Can QoS be preserved as it passes through the different devices? I know, pretty basic, but I have to start somewhere.
View 12 Replies View Relatedcan i use normal two L3 Switch(3560) for BGP Multihoming with 2 different isp
View 4 Replies View RelatedN5K will be running on Layer 2 mode. vPC configured between N5K and N2K Servers are part of Vlan 10, 20, 30 and Juniper SRX firewall is the gateway for all the servers. SRK firewall is Active/Standby mode.
Questions are
1) Is there any non-vPC link required between N5K in this scenario?
2) N5K will pass in/out traffic to juniper SRX firewall durining SRX failover as well as normal operation
Data link-ARP,RARP, presentation-SSL,TSL,ASCII,JPG, Session layer-ASP(apple talk session protocol),SCP are these correct?can your provide 2 new protocols for each with the long name?
View 17 Replies View Relatedwhich OSI layer is responsible for error correction nd which method is use for it..as far i have studied i thnk data link layer perform both error detection and correction..?
View 6 Replies View RelatedI managed to narrow down my question to this.SOCKS5 proxy is able to handle both TCP and UDP transport protocols.If I have IPinIP encapsulated tunnel, will this work?
in other words, does SOCKS5 expect Layer 4 header immediately after Layer 3 header or not?
I am looking for a certified (e.g. by the ITU) traffic model for the OSI layer 3 & 4. (TCP/IP). If there are definitions for different kinds of traffic, like idle-traffic (protocol only), surfing, file-transfer and all these mixed up.The reason why i am looking for it is that i am actually working at my bachelor thesis and need to simulate network traffic and its behaviour in/at a router. In particular i want to simulate the RTO (retransmission timeout) of a router with "realistic" traffic.
View 12 Replies View RelatedWhy layer 2 switches need its mac address, even it does not have any interface ? (does not have stp and etc)
View 8 Replies View RelatedI'm looking to get a layer 3 managed switch. The HP we currently have only does layer 2.I'm looking at a HP v1910-24g. It has 24 10/100/1000 ports and looks to be layer 3 as well.It looks like they can be had for around $350.Anything different I should be looking at with similar specs? Any issues with the v1910-24g?
View 19 Replies View RelatedWhat does a firewall block at the transport layer?
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