03-05-2007 03:04 AM - edited 03-05-2019 02:42 PM
Hi,
I have two 7513 router with IOS 12.1(14) GD Enterprise. Fa0/0/2 is crossed while Fa0/0/1 is ISL trunk to two switches.
The trunk port Fa0/0/1 have multiple sub-interfaces configured in HSRP. If I change one of the 7513 with 3845 installed with Advanced Enterprise Service 12.4(?), will the HSRP/ISL trunk still work?
03-05-2007 03:18 AM
ISL is not available on the internal GigE ports of the 3845 router, but it is available on
Etherswitch module ports. Please check which module you have and proceed accordingly.
HTH,Please rate if it does.
-amit singh
03-05-2007 03:45 AM
The router have not arrive yet :)
I also purchase FE module for 3845, I will use the GE to crossed to 7513 FE while the 3845 FE module will be ISL trunk to switch with HSRP in the sub-interfaces. Theoretically they should work.
03-05-2007 04:15 AM
Yes, they should work. The follwing FE module has support for ISL trunking.
EtherSwitch Service Modules (NME-16ES-1G, NME-16ES-1G-P, NME-X-23ES-1G, NME-X-23ES-1G-P, NME-XD-48ES-2S-P, and NME-XD-24ES-1S-P)
http://www.cisco.com/en/US/products/ps5855/products_qanda_item0900aecd802a9470.shtml
HTH,
-amit singh
03-05-2007 04:48 AM
The FE module I purchased is NM-2FE2W. I have to change my plan then.
What I'm planning is this to minimize downtime. Replace one of the 7513 with 3845 first then replace the last 7513 with 3845. After that, replace the two switches with 3750 and move the HSRP from 3745 to 3750
Well, as mentioned the devices have not arrived yet. Once I have them, I can try every possible scenario to replace the existing routers and switches.
Your reply is informative at this time, I'll post again on this subject.
This is the config in 7513 interface that I'll be putting in 3845
Router1
!
interface FastEthernet1/0/0.1
description LAN101
encapsulation isl 101
ip address a.b.c.2 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip accounting access-violations
ip multicast boundary 30
no ip mroute-cache
ntp disable
no cdp enable
standby 1 ip a.b.c.1
standby 1 timers 5 15
standby 1 priority 120
standby 1 preempt
standby 1 authentication secret
standby 1 track FastEthernet1/0/0 30
Router2
!
interface FastEthernet1/0/0.1
description LAN101
encapsulation isl 101
ip address a.b.c.3 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip accounting access-violations
ip multicast boundary 30
no ip mroute-cache
ntp disable
no cdp enable
standby 1 ip a.b.c.1
standby 1 timers 5 15
standby 1 priority 100
standby 1 preempt
standby 1 authentication secret
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