We have a lab network set up with a 7609 router as the central core. Scenario: Laptop with a SIP client. In the lab is a session border controller that will route signaling and media to a SIP gateway with a call agent (172.23.112.201) and a media "handler" (172.23.113.6). The call processing device will forward packets to an RF network (108.x.x.x) where an NCS cable modem sits.
Call signaling works perfectly fine. However, RTP traffic from the laptop to the NCS phone is getting routed incorrectly. RTP traffic from the phone to the laptop works fine.
Expected traffic patterns:
Laptop to phone: Orange + Blue in picture below. Laptop > corporate router > 7609 > SBC > 7609 > SIP Gateway > 7609 > CMTS > MTA > Phone.
Phone to laptop: Green in picture below. Phone > MTA > CMTS > 7609 > SIP Gateway > 7609 > SBC > 7609 > corporate router > Laptop.
Packet captures show the laptop to phone RTP packets are being routed back towards the corporate router. These time out with ICMP TTL exceeded packets. There are static routes for 172.23.113.0/27 to the optical interfaces that go to the SIP gateway. Interestingly, I can ping an IP on the SIP gateway (not used for media, but is pingable) in that static range (172.23.113.1) just fine from the 7609 (i.e. it's not getting routed to the corporate router). Unfortunately, the IP for the media endpoint on the SIP gateway is not pingable. Config for the 7609 is attached.
Any thoughts? Questions I have concerning the config are with the "ip source-route" entry as well as the mls & cef entries.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...