Dear Expert I want to know which OSI layer does HSRP , VRRP and glbp operates ? In one of my techincal interview , they told me hsrp and glbp operate in layer 2 and vrrp operate in layer 3. Just want to confirm Thanks in Advance AJ ... View more

we are planning to bundle two clear -channel DS3 to form multilink. i just want you suggestion whether it is possible and good practice. The routers are 7204 vxr. ... View more

i have a query regardin bypass. Suppose i have a hardware failure or power supply down for IPS , do IPS 4255 bypass the traffic by default or we need to add some extra hardware . thanks for your input ... View more

what type of cable goes between termination point and router in the below senario? is it T1 cable or normal patch cable? service provide .......t1.................termination point .............?..............router's T1 interface. thanks in advance. ... View more

can we extend our etheret (vlans) over DS3. what are the steps to do it? Do we need some configurations on cisco devices or it is handled by converters(ethernet to ds3 converter)? thanks in advance. ... View more

subnet used 10.1.6.128/28 top 6509 interface Vlan61 description mail-voip vlan ip address 10.1.6.131 255.255.255.240 no ip redirects standby 61 ip 10.1.6.129 standby 61 timers 5 15 standby 61 priority 90 standby 61 preempt standby 61 authentication dc26 bottom 6509 interface Vlan61 description mail-voip vlan ip address 10.1.6.130 255.255.255.240 no ip redirects standby 61 ip 10.1.6.129 standby 61 timers 5 15 standby 61 priority 80 standby 61 preempt standby 61 authentication dc26 top# show standby Vlan61 - Group 61   Local state is Active, priority 90, may preempt   Hellotime 5 sec, holdtime 15 sec   Next hello sent in 2.866   Virtual IP address is 10.1.6.129 configured   Active router is local   Standby router is 10.1.6.130 expires in 10.156   Virtual mac address is 0000.0c07.ac3d   Authentication text "dc26"   1 state changes, last state change 24w2d   IP redundancy name is "hsrp-Vl61-61" (default) bottom#show standby Vlan61 - Group 61   Local state is Standby, priority 80, may preempt   Hellotime 5 sec, holdtime 15 sec   Next hello sent in 3.894   Virtual IP address is 10.1.6.129 configured   Active router is 10.1.6.131, priority 90 expires in 11.632   Standby router is local   Authentication text "dc26"   7 state changes, last state change 24w0d   IP redundancy name is "hsrp-Vl61-61" (default) the problem (corrected): HSRP should be using 3 ip per subnet right? one for VIP and other two for top and bottom switch. But in my scenario when i telent to 10.1.6.143, it point to top 6509. is there something i am missing? thanks ... View more

we have 7206 router with 128mb RAM. when we enable http url filtering feature the router keeps reloading showing the following error Jul  9 23:56:20: %URLF-3-SERVER_DOWN: Connection to the URL filter server 10.40.2.26 is down Jul  9 23:57:17: %SCHED-3-STUCKMTMR: Sleep with expired managed timer 62F982C0, time 0x9200D1E54 (00:00:00 ago). -Process= "URL filter proc", ipl= 4, pid= 76 -Traceback= 607BE084 607BE4DC 608E59E8 608E5C9C 608E93F8 6098D808 609932AC 61068A18 6106953C 610680E4 61068470 Jul  9 23:57:17: %URLF-5-SERVER_UP: Connection to an URL filter server(10.40.2.26) is made, the router is returning from ALLOW MODE Jul  9 22:58:35: %ALIGN-3-SPURIOUS: Spurious memory access made at 0x6106B980 reading 0x4 Jul  9 22:58:35: %ALIGN-3-TRACE: -Traceback= 6106B980 61057928 61057ACC 6105830C 61036C98 61036420 61034960 6060E200CMD: 'copy run start' 22:59:49 EDT Fri Jul 9 2010 After we remove the url feature , the router is stable. Can some one know whats the problem? Thanks ... View more